Toshiba GRZ100 User manual

GRZ100
2
FEATURES
Fully numerical distance protection relay
High speed operation typically 20ms
Time-stepped distance protection with four forward
zones, two reverse zones, and one non-directional
zone
Zone 1 extension protection
Command protection distance schemes (PUP, POP,
BOP and UOP with week infeed and current reversal
logic)
Command protection DEF schemes (POP, BOP and
UOP)
Single- and/or three-phase trip
High-resistance earth fault protection
Overcurrent backup protection
Thermal overload protection
Overvoltage and undervoltage protection
Switch-on-to-fault (SOTF) and stub protection
Broken conductor detection
Breaker failure protection
Out-of-step trip protection
Power swing blocking
VT failure detection
Single-shot (single/three/single+three phase) or
multi-shot (three phase) autoreclose
Fault location
Configurable binary inputs and outputs
Programmable logic for I/O configuration, alarms,
indications, recording, etc.
Automatic supervision
Metering and recording functions
Menu-driven user interfaces
Front-mounted RS232C port for communication to a
local PC and rear-mounted RS485, Fibre optic or
Ethernet LAN serial ports for communication to a
remote PC
IRIG-B port for external clock
The IEC60870-5-103 protocol is provided for
communication with substation control and
automation systems.
GRZ100 can be provided with integral digital communi-
cation channels for teleprotection signalling. Either one or
two communication channels are provided, suitable for
relay-to-relay connection via fibre-optic links, or via
electrical interfaces to a digital communication network.
GRZ100 can be configured using the integral communi-
cation channels to support the following functions:
Phase-segregated command protection distance
schemes (PUP, POP, BOP and UOP with week
infeed and current reversal logic).
Phase-segregated command protection DEF
schemes (POP, BOP and UOP).
Command protection signalling for tripping during a
power swing.
Command protection for 2- or 3-terminal applications.
Phase-segregated transfer trip (intertripping).
Transmission of binary signals for user-configurable
applications.
Transmission of measured values to be displayed at
the remote terminals.
Synchronisation of the clocks at the various terminals.
Enhanced fault-location accuracy by use of remote- end
data in the case of 3-terminal applications.
Continuous monitoring of the communication channels,
with capability to provide dual-redundant channels in
the case of a 2-ended system, and automatic
re-routing of signals in the event of a communi-
cation channel failure in a 3-ended system.
APPLICATION
GRZ100 is a full-scheme high-speed numerical distance
relay for application to transmission lines in solidly earthed
networks.
GRZ100 provides the following protection schemes.
Time-stepped distance protection
Zone 1 extension protection
Command protection (distance protection using
telecommunication)
Overcurrent protection for SOTF and stub fault
Out-of-step trip protection
Breaker failure protection
As a backup protection for high-resistance earth faults,
GRZ100 provides the following four functions.
Directional earth fault protection
Directional earth fault protection using
telecommunication
Directional or non-directional inverse time overcurrent
and earth fault protection
Definite time overcurrent and earth fault protection
GRZ100 can initiate high-speed single-shot autoreclose or
multi-shot autoreclose.
GRZ100 provides the following metering and recording
functions.
Metering
Fault recording
Event recording
Disturbance recording
GRZ100 provides the following user interfaces for relay
setting or viewing of stored data.
Relay front panel; LCD, LED display and operation keys
Local PC
Remote PC

GRZ100
3
A local PC can be connected to the relay via the RS232C
port on the front fascia of the relay. Either one or two rear
ports (RS485 or fibre optic) are provided for connection to a
remote PC and for IEC60870-5-103 communication with a
substation control and automation system. Further, an
Ethernet LAN port (TCP/IP) can be provided.
GRZ100 has four models which differ depending on
whether or not the autoreclose or fault detector provided
with independent MPU and trip contact for fail-safe
function have been included.
Model 200
series
- With autoreclose for single
breaker scheme
Model 300
series
- With autoreclose for one-and-a-
half breaker scheme
Model 400
series
- With autoreclose for single
breaker scheme
- With fault detector
Model 500
series
- With autoreclose for one-and-a-
half breaker scheme
-With fault detector
The following GRZ100 models provide integral digital
communication channels for protection signalling. These
models can also be applied using standard, external
teleprotection equipment.
Model
211B,
214B,
216B
- 2-terminal line application
(one communication channel)
- With autoreclose for single breaker
scheme
Model
311B
- 2-terminal line application
(one communication channel)
- With autoreclose for
one-and-a-half breaker scheme
Model
221B,
224B,
226B
- 2- / 3-terminal line application
(two communication channels)
- With autoreclose for single breaker
scheme
Model
321B,
323B
- 2- / 3-terminal line application
(two communication channels)
- With autoreclose for
one-and-a-half breaker scheme
In the GRZ100 models provided with an integral digital
communication channel for protection signaling, four
communication topologies are available depending on the
model. Models 211/214/216/311B support configuration (a)
only in Figure 1. Models 221/224/226/321/323B can support
all configurations. Configuration (b) and (d) offer security
against failure of a communication link.
RELAY BRELAY A
Ch1 Ch1
(a) Two-ended system, single channel
RELAY BRELAY A
Ch1 Ch1
Ch2 Ch2
(b) Two-ended system, dual redundant channels
RELAY A
RELAY BRELAY C
Ch1
Ch1
Ch1
Ch2
Ch2
Ch2
(c) Three-ended system, chain topology
RELAY A
RELAY BRELAY C
Ch1
Ch1
Ch1
Ch2
Ch2
Ch2
(d) Three-ended system, ring topology
Figure 1 Communication System Topologies
RELAY FUNCTIONS
Time-Stepped Distance Protection
GRZ100 provides maximum four-zone distance protection
(Z1, Z2, Z3, ZF) for forward faults, two-zone distance
protection (ZR1, ZR2) for reverse faults and one non-
directional distance protection (ZND) for both forward and
reverse faults.
GRZ100 provides individual phase-fault measuring elements
and earth-fault measuring elements for all types of fault.
Direction measurement in GRZ100 is based on cross
polarization with voltage memory to ensure dependable
fault detection. GRZ100 uses an advanced distance
measurement algorithm which achieves accurate fault
impedance measurement over a wide range of frequencies.
This superior algorithm also minimizes the effect of CT
saturation and gives stable performance with CVT
transients.
The GRZ100 provides measuring zones with mho-based
characteristics or quadrilateral characteristics, as shown in
Figures 2 and 3.
As shown in Figure 2, mho-based characteristics are
composed of mho element, offset mho element, reactance
element, and blinder element for phase fault protection and
earth fault protection.

GRZ100
4
(a) Phase fault measuring element
(b) Earth fault measuring element
Figure 2 Mho-based Characteristics
As shown in Figure 3, quadrilateral characteristics are
composed of reactance element, directional element and
blinder element. Reverse zones for phase fault use the
offset directional element to ensure reverse close-up fault
detection.
Z1 is applied to Zone 1 protection. The reactance line of Z1
can be configured to take a negative gradient when the
terminal is sending power, which prevents Z1 from
overreaching for remote end faults.
To ensure that GRZ100 can provide reliable time-delayed
tripping for close-up three-phase faults, the phase fault
elements are reverse offset following Z1 operation.
Z2 is applied to Zone 2 which provides protection for the
rest of the protected line not covered by Zone1 and backup
protection for the remote end busbar.
Z3 is applied to Zone 3 which provides remote back-up
protection for adjacent lines. Z3 is also used for detection of
forward faults in command protection. If Z3 is dedicated to
command protection, then ZF can be used for Zone 3
instead of Z3 in time-stepped distance protection.
(a) Phase fault measuring element
(b) Earth fault measuring element
Figure 3 Quadrilateral Characteristics
ZR1 and ZR2 are reverse looking elements applied to
Reverse Zone 1 and Zone 2, and used for local back-up
protection for busbar faults or transformer faults.
Z4 is used for detection of reverse faults in command
protection.
Z4S has an offset characteristic in order to assure detection
of close-up phase faults.
Zone 1 Extension
When telecommunications cannot be applied, a Zone 1
extension (Z1X) protection is provided for high-speed
protection of any fault along the whole length of the
protected line.
The reactance line of Zone 1 extension can take a negative
gradient when the terminal is sending loads, which prevents
Zone 1 extension from overreaching.
Command protection
The following four schemes are available for distance
protection using telecommunication.

GRZ100
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- Permissive Underreach Protection (PUP)
- Permissive Overreach Protection (POP)
- Unblocking Overreach Protection (UOP)
- Blocking Overreach Protection (BOP)
POP and UOP are equipped with echo logic and weak
infeed tripping functions and can be used in the protection of
lines with weak infeed or no infeed terminals. An
undervoltage element is incorporated for the weak infeed
tripping function.
Earth Return and Mutual Coupling
Compensation
Z1G, Z2G, Z1XG and ZR1G for earth fault protection adopt
vectorial zero sequence current compensation to eliminate
distance measuring errors due to the earth return of zero
sequence current. When the GRZ100 is applied to a double
circuit line, in order to eliminate the influences of zero
sequence mutual coupling, the zero sequence current for
the parallel line can be introduced. ZR1G is not provided
with zero sequence mutual coupling compensation for the
parallel line.
Application to long and short lines
The large capacitance of a long transmission line can
adversely affect the measurement of fault impedance. GRZ100
employs an advanced charging current compensation technique
which gives significant improvement in impedance
measurement for long transmission lines.
The suitability of a distance relay for application to short
lines is not determined by its minimum setting but rather by
its measuring accuracy for high SIR conditions. GRZ100
provides highly accurate measuring elements suitable to be
applied to short lines.
Fault Phase Selection
GRZ100 provides single- and/or three-phase tripping
functions.
In order to perform extremely reliable single-phase tripping, an
undervoltage element with current compensation is used for
fault phase selection.
The undervoltage element with current compensation can
operate correctly even for a fault with a strong power source
and small voltage drop at the relay installation point.
The characteristics of the phase selection element are as
shown in Figure 4.
V
IZc
I
Vk
I: Fault current
Vk: Undervoltage setting
Zc: Im
p
edance settin
g
V: Fault volta
g
e
Figure 4 Phase selection element
Switch-on-to-fault Protection and Stub
Protection
Switch-on-to-fault (SOTF) protection is provided in order to
detect faults that are present when a line or busbar is
energized.
For 500 ms following circuit breaker closure, this function is
effective to protect against any switch-on-to-fault. A
non-directional overcurrent element or distance measuring
elements perform the SOTF protection.
Stub protection operates for a fault in a stub zone using an
overcurrent element.
Voltage Transformer Failure Supervision
Failure in the voltage transformer (VT) secondary circuit
may cause false tripping by voltage dependent measuring
elements. Therefore, the following voltage dependent
protections are blocked instantaneously when VT failure is
detected.
- Distance protection
- Directional earth fault protection
- Protection using telecommunications
- Out of step protection
VT failure is detected in any of the following cases.
- If residual voltage is detected when residual current is not
detected.
- If undervoltage is detected when a current change is not
detected.
Power Swing Blocking
The relay provides a power swing blocking (PSB) function to
prevent false tripping by distance measuring elements
during a power swing.
When a power swing is detected, all distance protection
zones and protection using telecommunications can be
blocked independently. The non-directional zone, ZND, is
not blocked.
A power swing condition is detected using two PSB
elements with quadrilateral characteristics shown in Figure 5.
The outer PSB element PSBOUT encloses the inner
element PSBIN, the two elements being separated by a
width of PSBZ. Further, GRZ100 provides PSBSZ and
PSBGZ for phase fault measuring elements and earth fault
measuring elements respectively. Their functions and
characteristics are identical. PSBGZ provides
phase-segregated characteristics.
If the impedance locus enters the PSBZ zone for more than
a predetermined time (20 to 60ms), the PSB function will
block the selected zones. The PSB function is reset after
500 ms when the impedance locus has moved outside the
PSB elements.
GRZ100 can provide high speed tripping for faults which
occur during a power swing condition, by utilising a
well-proven, dedicated negative sequence directional
element and any of the PUP, POP, UOP and BOP
command schemes.

GRZ100
6
PSBZ
PSBZPSBZ
0
PSBZ
PSBIN PSBOUT
R
X
PSBZ: Impedance setting of PSB element
Figure 5 Characteristics of power swing blocking element
Out-of-step Trip Protection
The out-of-step tripping function is used to execute power
system separation at the optimum point when an out-of-step
occurs.
An out-of-step is detected by using two distance measuring
elements with quadrilateral characteristics as shown in
Figure 5. The element operates when the out-of-step locus
passes from Zone A ÆZone B ÆZone C (or Zone C Æ
Zone B ÆZone A) and remains in Zones A and C for the
detection time (TOST).
X
Impedance
locus
OSTX
F
Zone A
OSTR
2
OSTR1
OSTXB
Zone B
Zone C
R
Figure 6 Characteristics of out of step trip element
Breaker Failure Protection
When an overcurrent element remains in operation longer
than a pre-determined length of time following the output of
a trip signal the associated circuit breaker is judged to have
failed and adjacent circuit breakers can be tripped as a
back-up measure.
Two independent timers are available, one of which can be
used to control the RETRIP of the original circuit breaker(s). The
second timer is used to control the backtripping of adjacent
circuit breakers.
For high-speed protection, an overcurrent element with
high-speed reset time is used to prevent a spurious re-trip
or backtrip following a successful trip or re-trip action.
Overcurrent Backup Protection
The IDMT(inverse definite minimum time) overcurrent
element is provided for non-directional inverse time
overcurrent protection. The IDMT element is available in
conformity with either of three IEC Standard characteristics
(Standard inverse, Very inverse, Extremely inverse) or a
Long-time inverse.
The characteristics of each IDMT are shown in Figure 8.
The IDMT element has a reset feature with definite time reset.
If the reset time is set to instantaneous, then no intentional
delay is added. As soon as the energising current falls
below the reset threshold, the element returns to its reset
condition.
If the reset time is set to some value in seconds, then an
intentional delay is added to the reset period. If the
energising current exceeds the setting for a transient period
without causing tripping, then resetting is delayed for a
user-definable period. When the energising current falls
below the reset threshold, the integral state (the point
towards operation that it has travelled) of the timing function
(IDMT) is held for that period.
This does not apply following a trip operation, in which case
resetting is always instantaneous.
Definite time overcurrent protection
Definite time overcurrent protection is enabled by the
instantaneous overcurrent element and pick-up delay timer.
Broken Conductor Detection
The unbalance condition caused by an open circuited
conductor is detected by the broken conductor
detection function. An unbalance threshold with
programmable definite time delay is provided.
High-resistance Earth Fault Protection
This protection provides high-resistance earth fault protection
using the directional earth fault (DEF) element and the earth
fault overcurrent element as follows.
Directional Earth Fault Protection
DEF element is used for time-delayed backup protection for
high-resistance faults.
Directional Earth Fault Protection using
Telecommunication
High-speed DEF protection using telecommunications is
provided by using a forward looking DEF element and a
reverse looking DEF element. POP, UOP, and BOP
schemes can be selected with DEF protection using
telecommunications.
To enable single phase tripping for a high impedance earth
fault, GRZ100, when equipped with the optional integral
communication channels, is provided with phase selection
logic to obtain phase segregated trip permission signals.
The characteristics of the forward and reverse looking DEF
elements are as shown in Figure 7.
-3V0
Backward DEF
Forward DEF 3I
0
Figure 7 Characteristics of directional earth fault element

GRZ100
7
Inverse Time Overcurrent Earth Fault
Protection
Directional or non-directional inverse time overcurrent earth
fault protection is provided using a combination of the IDMT
(inverse definite minimum time) overcurrent earth fault
element and DEF element. The IDMT element is available
in conformity with either of three IEC Standard
characteristics (Standard inverse, Very inverse, and
Extremely inverse) or a Long-time inverse.
The characteristics of each IDMT are shown in Figure 8.
The IDMT element for earth fault also has a reset feature
with definite time reset.
Figure 8 IDMT operating time characteristics
Definite Time Overcurrent Earth Fault
Protection
Definite time overcurrent earth fault protection is provided
using the instantaneous overcurrent element and pickup-
delay timer.
The definite time earth fault (EF) can be configured to issue
either an alarm and/or trip signal.
Thermal Overload Protection
The thermal overload feature provides protection for cables
and other plant against the effects of prolonged operation
under excess load conditions. A thermal replica algorithm is
applied to create a model for the thermal characteristics of
the protected plant. Tripping times depend not only on the
level of overload current, but also on the level of prior load
current, the thermal replica providing ‘memory’ of previous
conditions.
The thermal characteristics of the system are defined by
entering settings for full load current and thermal time
constant. The GRZ100 issues a trip according to the ‘cold’ and
‘hot’ curves specified in IEC60255-8 (see Figure 9), to
prevent the protected system from exceeding its thermal
capacity. The cold curve tripping times are applicable when
the system is first energised, while the hot curves are
relevant when the system has already been carrying some
prior load for a period of time. An alarm output is also
available to give early warning of high load current, set as a
percentage of thermal capacity.
IEC60255-8 Thermal Characteristics
Therm al Curves (Cold Curve - no
prior load)
0.01
0.1
1
10
100
1000
110
Overload Current (Multiple of k.IFLC)
Operate Time (minutes)
τ=1
τ=2
τ=5
τ=10
τ=20
τ=50
τ=100
Thermal Curves (Hot Curve - 90%
prior load)
0.001
0.01
0.1
1
10
100
1000
110
Overload Current (Multiple of k.IFLC)
Operate Time (minutes)
τ=100
τ=50
τ=20
τ=10
τ=5
τ=2
τ=1
()






−
=2
2
2
.
.
FLC
IkI
I
Lnt
τ
;
()






−
−
=2
2
22
.
.
FLC
P
IkI
II
Lnt
τ
IEC60255-8 ‘Cold’ Curve IEC60255-8 ‘Hot’ Curve
t = time to trip for constant overload current I (seconds)
I = overload current (largest phase current) (pu)
IP= previous load current (pu)
k.IFLC (or Iθ) = thermal overload current setting (pu)
τ= thermal time constant (seconds)
Ln = natural logarithm
Figure 9 IEC60255-8 thermal characteristics
Overvoltage and Undervoltage Protection
GRZ100 provides two-stage overvoltage protections for
both phase-to-phase voltage input and phase-to-neutral
voltage input. The first stage can be set for inverse time or
definite time operation, and the second stage set for definite
time operation. In total, therefore, GRZ100 provides four
independent overvoltage thresholds.
GRZ100 also provides four independent undervoltage
thresholds with two-stage undervoltage protection for
phase-to-phase voltage input and two-stage undervoltage
protection for phase-to-neutral voltage input. The
undervoltage protection is provided with an undervoltage
blocking function to prevent undervoltage tripping in the
case of a dead line.

GRZ100
8
Overv oltage Inverse Time Curve
s
0. 100
1. 000
10. 000
100. 000
1000. 000
11.5 22.5 3
Applie d Volt age ( x Vs)
Operat ing Time (secs)
TMS = 1
TMS = 2
TMS = 5
TMS = 1 0
Undervoltage Inverse Time Curves
1.000
10.000
100.000
1000.000
00.20.40.60.81
Applied Voltage (x Vs)
Operating Time (secs)
TMS = 10
TMS = 5
TMS = 2
TMS = 1
()
xTMS
Vs
V
t
1
1
−
=
()
xTMS
Vs
V
t− =
1
1
Figure 10 Inverse time characteristics
Autoreclose
Most faults on HV and EHV overhead transmission lines are
transient faults, which are removed following line
de-energization. After a short time, the hot gases disperse
and the air de-ionizes. After clearing the fault and deionizing
the fault arc, reclosing can be performed. GRZ100 provides
two autoreclose schemes, single-shot autoreclose and
multi-shot autoreclose.
The GRZ100 autoreclose function can be initiated by any of
the following high-speed protections.
- Protection using telecommunication
- Zone1 extension protection
Single-shot autoreclose
Single-shot reclosing can provide any of three auto-
reclose modes; single-phase autoreclose, three-phase
autoreclose, and single-and three-phase autoreclose.
In the single-phase autoreclose mode, only a faulted
phase is tripped, and then reclosed if a single-phase
earth fault occurs.
In the three-phase autoreclose mode, all three phases
are tripped, and then reclosed regardless of the fault
mode, whether a single-phase fault or a multi-phase
fault has occurred.
In the single- and three-phase autoreclose mode, the
single-phase is reclosed if a single-phase is tripped and
the three phases are reclosed if three phases are
tripped.
Multi-shot autoreclose
In a multi-shot autoreclose, two- to four-shot reclosing
can be selected. The first shot is selected from any of
the four autoreclose modes available in the single-shot
autoreclose scheme.
If reclosing by the first shot fails, three-phase tripping
and reclosing is applied for the second to fourth shots.
Synchronism Check
For the correct operation of three-phase autoreclose, voltage
and synchronism check are necessary. Characteristics of
the synchronism check element are shown in Figure 11.
VL: Line voltage
VB: Busbar voltage
θ: Synchronism
check angle
θ
θ
0 deg
Operating zone
VL
VB
OV
θ
θ
Figure 11 Synchronism check element
A detected slip cycle is determined by the following equation:
where,
f: slip cycle
θ: synchronism check angle setting
TSYN: synchronism check timer setting
One-and-a-half Breaker Scheme (Models 300
and 500)
GRZ100 performs two-breaker autoreclose in a one-and-
a-half breaker scheme.
Only single-shot autoreclose is available in Models 300 and
500. Single-phase autoreclose, three-phase autoreclose or
single and three-phase autoreclose can be applied to the
two circuit breakers.
Fault Detector (Models 400 through 500)
For ultra-critical applications, where security is the over-
riding concern and a two-out-of-two tripping philosophy is
specified, GRZ100 can be provided with an independent
fault detector. This fault detector contains its own main
processing unit (MPU) and trip contacts. The trip contacts
of the main protection are connected in series with the fault
detector trip contacts to ensure completely fail-safe operation.
The fault detector incorporates the following six fault
detection elements.
- Multi-level overcurrent element
- Current change detection element
- Earth fault overcurrent element
- Undervoltage element for earth fault detection
- Undervoltage element for phase fault detection
- Undervoltage change detection element
Interfaces for Integral Communication
GRZ100 can be provided with the following interface(s) and
linked to a dedicated optical fibre communication circuit or
multiplexed communication circuit (multiplexer) shown in
Figure 12.
The electrical interface supports CCITT G703-1.2.1, -1.2.2,
-1.2.3, X.21(RS530) and RS422. Twisted pair cable is used
for connecting the relay and multiplexer. In the case of an
f = 180°ХTSYN
θ

GRZ100
9
optical link via a multiplexer, the optical interface unit G1IF1
(optical to electrical converter) is required for connecting to
the multiplexer. The electrical interface between the
converter and the multiplexer supports CCITT G703 -1.2.1,
-1.2.2, -1.2.3, and X.21(RS530).
b) Optical interface using multiplexer
Multi-
plexer
Optical
I/F
Unit
G1IF1
GRZ100 Opt.
I/F
CCITT-G703.
ITUT-X.21
Bit rate: 64kbps
GI Opt. Fibre
< 2km
SWL, 64kbps
GRZ100 Elec.
I/F
c) Electrical interface using multiplexer
Multi-
plexer
Twisted pair wire
CCITT-G703.
ITUT-X.21
RS422
Bit rate: 64kb
p
s
a) Optical interface
GRZ100 Opt.
I/F
Optical Fibre
64kbps
(Option)
Figure 12 Telecommunication system
METERING AND RECORDING
Metering and Monitoring
The following power system data is measured continuously
and can be displayed on the LCD on the relay fascia, at the
local PC, and the remote PC when connected.
- Voltages (phase, phase to phase, symmetrical
components)
- Currents (phase, phase to phase, symmetrical
components)
- Active power and reactive power
- Frequency
Currents and voltages can be indicated as primary or
secondary values. Active power and reactive power are
indicated as primary values.
The user can monitor the following output and status on the
LCD and at local/remote PCs.
- Relay element output
- Binary input/output
- CB status
Event Record
The most recent 480 time-tagged events are stored with
1ms resolution.
The event recorder can be triggered by a Trip signal, by
Overcurrent trigger elements (OC) and by Undervoltage
trigger elements (UV). In case of 'Trip', the trigger is
performed whenever tripping occurs. In case of OC/UV,
On(used) or Off(not used) is selectable.
Event trigger is freely selectable by using PLC.
Events recorded are as follows.
- Tripping and reclosing
- Alarms
- Change of binary input signal
- Change of relay setting
- Relay failure
Fault Record
A relay trip initiates fault recording. Time-tagged fault
data can be stored for the 8 most recent faults. Fault
record items are as follows.
- Date and time
- Faulted phase
- Phases tripped
- Tripping mode
- Fault location
- Pre-fault and post-fault current and voltage data (phase,
phase to phase, symmetrical components)
- Autoreclose operation
Fault Location
Fault location is initiated by relay tripping signals excluding
breaker failure, overcurrent backup and out-of-step tipping. It
can also be started on receipt of a start signal from external
relays.
Fault location is indicated in km and % for the whole length of
the protected line. The fault location is highly accurate for
parallel lines due to the implementation of zero-sequence
mutual impedance compensation.
The result of the fault location is stored as fault record data.
In GRZ100 with integral communication, improved fault
location accuracy is achieved for 3-ended applications by
use of data received from the remote terminals.
Disturbance Record
The relay can record 8 analog and 32 binary signals. The
disturbance recorder is initiated by operation of the overcurrent
element, undervoltage element and/or relay tripping.
In respect to analog data, phase voltage and current,
residual voltage and current, and the residual current of the
parallel line are recorded. The data can be transformed into
the COMTRADE format.
Pre-fault recording time is fixed at 300ms, post-fault
recording time can be set from 100 ms to 3 s. The maximum
number of stored records depends on the post-fault
recording time. In the case of a post-fault recording time of
500ms, up to 20 disturbance records can be stored. The
record number of the recorded data is displayed on the
LCD.

GRZ100
10
Calendar and Time
The calendar and time are provided for the time-tagging of
recorded data. Synchronisation with GPS (Global
Positioning System) is achieved via the IRIG-B port.
USERINTERFACE
Relay Front Panel
The relay front panel incorporates the following user
interfaces. Setting the relay and viewing stored data are
possible using the Liquid Crystal Display (LCD) and
operation keys.
- 40 character, four line LCD with back light
- Eight Light Emitting Diodes (LED) including four that are
configurable
- Operation keys
- RS232C port
- Monitoring jacks
Figure 13 shows the relay front panel.
Figure 13 Relay front panel
The following items can be displayed on the LCD.
- Setting
- Metering
- Event records
- Fault records
- The number of disturbance records
- Fault location
- Any failure code detected by the automatic supervision
Password protection can be provided from the setting menu
on the LCD to provide security for relay setting changes.
After the password has been set, the password must be
entered to access the setting menu from a local or remote PC
as well as on the LCD.
The contents of metering, fault records, and relay failures
can be monitored by pressing the VIEW key. The VIEW key
can be pressed without removing the relay front cover.
Arbitrary signals can be assigned to the four user
configurable LEDs.
Two monitoring jacks are operable when the test mode is
selected in the LCD window. An oscilloscope can be
connected to the relay through these jacks. Selection of
output signals on the monitoring jacks can be set from the
menu.
Local PC
The user can communicate with the GRZ100 from a local
PC via the RS232C port on the relay fascia. The following data
can be viewed or analysed on the local PC with RSM100
software.
- Setting
- Metering
- Event records
- Fault records
- Disturbance records
- Fault location
Relay Setting and Monitoring (RSM)
GRZ100 can be connected to the RSM system via the
RS485 interface at the rear of the relay. The user can
operate the relay from a remote PC in the same way as
from a local PC.
Figure 14 shows the configuration of the RSM system via
the protocol converter G1PR2 (option). The G1PR2 can be
provided with maximum 8 ports and each port supports 32
relays addressing.
A maximum of 32 x 8 relays can be connected to the
remote PC in multi-drop mode, via the protocol converter.
The RSM100 software is also used to communicate with the
relay and to view or analyze disturbance records on the
remote PC.
The data transmission rate between relays and the protocol
converter is 64kbps.
G1PR2
Figure 14 Relay setting and monitoring system
IEC60870-5-103 Communication
The relay can support the IEC60870-5-103 communication
protocol. This protocol is mainly used when the relay
communicates with a control system and is used to transfer
the measurand data, status data and general command
from the relay to the control system.

GRZ100
11
Relay Setting
The user can input or change settings using the operation
keys on the relay fascia or via a local or remote PC with the
RSM system.
Password protection is provided to change settings.
Eight active setting groups are provided. This allows the
user to set one group for normal operating conditions while
other groups may be set to cover alternative operating
conditions.
Configurable Binary Output Contacts
GRZ100 is provided with 13 to 41 user configurable
normally open output contacts used for indication and alarm.
The number of outputs varies according to the relay model.
Configurable Binary Inputs
GRZ100 is provided with 18 to 28 user configurable binary
inputs.
The number of inputs varies according to the relay model.
PLC Function
GRZ100 is provided with a PLC (Programmable Logic
Control) function allowing user-configurable sequence logics
on binary signals. Configurable binary inputs, binary outputs
and LEDs are programmed by the PLC function.
AUTOMATIC SUPERVISION
Automatic Monitoring Function
The automatic monitoring function will detect failures,
should they occur, that might cause unwanted operation.
The items monitored include the following:
- Analog input circuits
- Analog-to-digital converter
- Watchdog Timer
- Binary output circuits
- DC power supply circuits
- CPU
- Telecommunication circuit
- Relay address monitoring
Automatic Test Function for External
Communication
In the BOP scheme, a signal check-back test function is
provided to check the integrity of the signalling channels.
Alarms
In the unlikely event that a relay failure should occur, this
is detected by automatic monitoring and the LED
ALARM on the relay fascia is illuminated. A binary
“RELAY FAILURE” output is simultaneously operated
and the date/time of any such failure would be stored in
the event record.
PC DISPLAY
Metering
Event record
Fault record
Vector record
Data analysis

GRZ100
12
TECHNICAL DATA
Ratings
AC current In: 1A or 5A
AC voltage Vn: 100V, 110V, 115V, 120V
Frequency: 50Hz or 60Hz
DC power supply: 110Vdc/125Vdc (Operative range: 88 - 150Vdc)
220Vdc/250Vdc (Operative range: 176 - 300Vdc)
48Vdc/54Vdc/60Vdc (Operative range: 38.4 - 72Vdc)
24Vdc/30Vdc (Operative range: 19.2 – 36Vdc)
AC ripple on DC supply IEC60255-11 maximum 12%
DC supply interruption IEC60255-11
Permissive duration of DC supply voltage
interruption to maintain normal operation:
Restart time:
less than 50ms at 110V
less than 10s
Binary input circuit DC voltage 110Vdc/125Vdc
220Vdc/250Vdc
48Vdc/54Vdc/60Vdc
24Vdc/30Vdc
Overload Ratings
AC current input
AC voltage input
4 times rated continuous
100 times rated for 1s
2 times rated continuous
2.5 times rated for 1s
Burden
AC current input 0.2VA per phase (at rated 5A)
0.4 VA at zero-sequence circuit (at rated 5A)
0.1VA per phase (at rated 1A)
0.3 VA at zero-sequence circuit (at rated 1A)
AC voltage input 0.1VA (at rated voltage)
DC power supply: less than15W (quiescent)
less than 25W (operation)
Binary input circuit: ≤0.5W/input at 110Vdc
CT Ratio Setting
CT ratio 1 to 20000 in 1 steps
Full Scale of Current for Measurement
Current 65 times rated current
Phase Fault Distance Measuring Element
Z1S, Z2S and Z1XS
Z1S θ1
Z1S θ2
ZFS, ZR1S and ZR2S
Z3S and Z4S
Characteristic angle
Z1S and Z4S offset
ZNDS
Blinder (BFRS1, BFRS2, BFRS3, BRRS, BNDS)
BRLS: Linked with BRRS
Characteristic angle: (BFRS1, BFRS2, BFRS3, BRRS, BNDS)
Characteristic angle (BFLS)
0.10 to 250.00Ωin 0.01Ωsteps (1A relay)
0.01 to 50.00Ωin 0.01Ωsteps (5A relay)
0°to 45°in 1°steps
45°to 90°in 1°steps
0.1 to 250.0Ωin 0.1Ωsteps (1A relay)
0.01 to 50.00 in 0.01Ωsteps (5A relay)
0.1 to 250.0Ωin 0.1Ωsteps (1A relay)
0.01 to 50.00 in 0.01Ωsteps (5A relay)
45°to 90°in 1°steps
7.5Ωfixed (1A relay)
1.5Ωfixed (5A relay)
0.1 to 250.0Ωin 0.1Ωsteps (1A relay)
0.01 to 50.00 in 0.01Ωsteps (5A relay)
0.5 to 100.0Ωin 0.1Ωsteps (1A relay)
0.10 to 20.00Ωin 0.01Ωsteps (5A relay)
75°fixed
90°to 135°

GRZ100
13
Earth Fault Distance Measuring Element
Z1G, Z2G and Z1XG
Z1G θ1
Z1G θ2
ZR1G
ZFG, Z3G, ZR2G and Z4G
Characteristic angle
ZNDG
Blinder (BFRG1, BFRG2, BFRG3, BRRG, BNDG)
BRLG: Linked with BRRG
Characteristic angle (BFRG1, BFRG2, BFRG3, BRRG, BNDG)
Characteristic angle (BFLG)
0.10 to 250.00Ωin 0.01Ωsteps (1A relay)
0.01 to 50.00Ωin 0.01Ωsteps (5A relay)
0°to 45°in 1°steps
45°to 90°in 1°steps
0.1 to 250.0Ωin 0.1Ωsteps (1A relay)
0.01 to 50.00 in 0.01Ωsteps (5A relay)
0.1 to 500.0Ωin 0.1Ωsteps (1A relay)
0.01 to 100.00 in 0.01Ωsteps (5A relay)
45°to 90°in 1°steps
0.1 to 500.0Ωin 0.1Ωsteps (1A relay)
0.01 to 100.00 in 0.01Ωsteps (5A relay)
0.5 to 100.0Ωin 0.1Ωsteps (1A relay)
0.10 to 20.00Ωin 0.01Ωsteps (5A relay)
75°fixed
90°to 135°
Time Setting for Zone Protection
Time setting of Z1S, Z2S, Z3S, ZFS, ZR1S, ZR2S,
ZNDS, Z1G, Z2G, Z3G, ZFG, ZR1G, ZR2G, ZNDG
0.00 to 10.00s in 0.01s steps
Command Protection
Coordination time for BOP scheme 0 to 50ms in 1ms steps
Operating and Resetting Time of Distance Measuring Element
Typical operating time
Operating time curve (SIR curve)
Resetting time for tripping output
20ms
Refer to Figure 13.
Typical 30ms (Adjustable by PLC function)
Accuracy of Distance Measuring Element
Static accuracy
Static angle accuracy
Transient overreach
±5% under SIR <30, ±10% under 30 <SIR <50
±5°
+5%
Minimum Operating Current
Current 0.08A (1A relay)
0.4A (5A relay)
Residual Current Compensation
Residual current compensation for reactance element of
Z1G, Z1XG, Z2G, ZFG, ZR1G
Earth return compensation
Mutual coupling compensation (ZR1G excluded)
Adjustable as follows:
0 to 1000% in 1% steps
0 to 1000% in 1% steps
Phase Selection Element
Undervoltage
Impedance
Characteristic angle
Residual current compensation
10 to 60V in 1V steps
0.0 to 250.0Ωin 0.1Ωsteps (1A relay)
0.0 to 50.0Ωin 0.1Ωsteps (5A relay)
45°to 90°in 1°steps
Automatically set according to residual current
compensation setting of reactance element
Switch-on-to-fault and Stub protection
Overcurrent 0.4 to 3.0A in 0.1A steps (1A relay)
2.0 to 15.0A in 0.1A steps (5A relay)
Broken Conductor Detection
Broken conductor threshold (I2/I1):
DTL delay:
OFF, 0.10 to 1.00 in 0.01 steps
0.00 to 300.00s in 0.01s steps

GRZ100
14
Voltage Transformer Failure Supervision
Undervoltage element (phase-to-phase)
Undervoltage element (phase-to-earth)
Current change detection element
Residual voltage element
Residual current element
50 to 100V in 1V steps
10 to 60V in 1V steps
0.1A fixed (1A relay)
0.5A fixed (5A relay)
20V fixed
Common use with earth fault detection element
Power Swing Blocking
Detection zone (PSBZS, PSBZG)
Current change detection element
Detection time
Resetting time
2.5 to 75.0Ωin 0.1Ωsteps (1A relay)
0.50 to 15.00 in 0.01Ωsteps (5A relay)
0.1 to 2.0A in 0.1A steps (1A relay)
0.5 to 10.0A in 0.1A steps (5A relay)
30 to 60ms in 1ms steps
500ms fixed
Out-of-step Protection
Resistive reach (OSTR1)
Resistive reach (OSTR2)
Resistive reach (OSTXF)
Resistive reach (OSTXF)
Detection time (TOST)
15 to 150Ωin 1Ωsteps (1A relay)
3.0 to 30.0Ωin 0.1Ωsteps (5A relay)
5 to 50Ωin 1Ωsteps (1A relay)
1.0 to 10.0Ωin 0.1Ωsteps (5A relay)
5 to 250Ωin 1Ωsteps (1A relay)
1.0 to 50.0Ωin 0.1Ωsteps (5A relay)
1 to 50Ωin 1Ωsteps (1A relay)
0.2 to 10.0Ωin 0.1Ωsteps (5A relay)
0.01 to 1.00s in 0.01s steps
Breaker Failure (BF) Protection
Overcurrent element
BF timer for retry-trip of failed breaker
BF timer for related breaker trip
Operating time of overcurrent element
Resetting time of overcurrent element
0.1 to 2.0A in 0.1A steps (1A relay)
0.5 to 10.0A in 0.1A steps (5A relay)
50 to 500ms in 1ms steps
50 to 500ms in 1ms steps
less than 20ms at 50Hz or less than 17ms at 60Hz
less than 15ms at 50Hz or less than 13ms at 60Hz
Inverse Time Overcurrent Protection
Overcurrent
Time multiplier
Characteristic
Accuracy of inverse time characteristics
Reset definite time
0.10 to 5.00A in 0.01A steps (1A relay)
0.5 to 25.0A in 0.1A steps (5A relay)
0.05 to 1.00 in 0.01 steps
Refer to Figure 8.
Standard, Very and Long-time: IEC60255-3 class 5
Extremely inverse: IEC60255-3 class 7.5
0.0 to 10.0s in 0.1s steps
Definite Time Overcurrent Protection
Overcurrent
Time for delayed trip
Operating time of overcurrent element
Accuracy of pick-up value
0.1 to 20.0A in 0.1A steps (1A relay)
0.5 to 100.0A in 0.1A steps (5A relay)
0.00 to 10.00s in 0.01s steps
less than 20ms
±5%
Directional Earth Fault Protection
Characteristic angle
Polarising voltage (3V0)
Zero-sequence current (3I0)
Time for backup trip
Accuracy of pick-up value
0 to 90°in 1°steps (3I0 lags for −3V0)
1.7 to 21.0V in 0.1V steps
0.10 to 1.00A in 0.01A in 0.01A steps (1A relay)
0.5 to 5.0A in 0.1A steps (5A relay)
0.00 to 10.00s in 0.01s steps
±5%

GRZ100
15
Directional Earth Fault Command Protection
Time for delayed trip
Coordination time
0.00 to 0.30s in 0.01s steps
0 to 50ms in 1ms steps
Inverse Time Earth Fault Protection
Earth fault
Time multiplier
Characteristic
Accuracy of inverse time characteristics
Reset definite time
0.10 to 1.00A in 0.01A steps (1A relay)
0.5 to 5.0A in 0.1A steps (5A relay)
0.05 to 1.00 in 0.01 steps
Refer to Figure 8.
Standard, Very and Long-time: IEC60255-3 class 5
Extremely inverse: IEC60255-3 class 7.5
0.0 to 10.0s in 0.1s steps
Definite Time Earth Fault Protection
Earth fault
Time for delayed trip
Accuracy of pick-up value
0.10 to 1.00A in 0.01A steps (1A relay)
0.5 to 5.0A in 0.1A steps (5A relay)
0.00 to 10.00s in 0.01s steps
±5%
Weak Infeed and Echo Protection
Phase-to-phase undervoltage element
Phase-to-earth undervoltage element
50 to 100V in 1V steps
10 to 60V in 1V steps
Thermal overload Protection
Thermal setting (THM = k.IFLC)
Time constant (τ)
Thermal alarm
Pre-load current setting
OFF, 0.40 – 2.00A in 0.01A steps (1A rating)
OFF, 2.0 – 10.0A in 0.1A steps (5A rating)
0.5 – 300.0mins in 0.1min steps
OFF, 50% to 99% in 1% steps
0.00 – 1.00A in 0.01A steps (1A rating)
0.0 – 5.0A in 0.1A steps (5A rating)
Overvoltage Protection
1st, 2nd Overvoltage thresholds:
Delay type:
IDMTL Time Multiplier Setting TMS:
DTL delay:
DO/PU ratio
Reset Delay (1st threshold only):
OFF, 5.0 – 150.0V in 0.1V steps (for both
phase-to-phase and phase-to-neutral voltage)
DTL, IDMTL(1st threshold only)
0.05 – 100.00 in 0.01 steps
0.00 – 300.00s in 0.01s steps
10 – 98% in 1% steps
0.0 – 300.0s in 0.1s steps
Undervoltage Protection
1st, 2nd Undervoltage thresholds:
Delay type:
IDMTL Time Multiplier Setting TMS:
DTL delay:
Reset Delay (1st threshold only):
OFF, 5.0 – 150.0V in 0.1V steps (for both
phase-to-phase and phase-to-neutral voltage)
DTL, IDMTL(1st threshold only)
0.05 – 100.00 in 0.01 steps
0.00 – 300.00s in 0.01s steps
0.0 – 300.0s in 0.1s steps
Fault Locator
Line reactance and resistance setting
Line length
Correction factor of impedance between lines
Correction factor of impedance between in each phase
Accuracy
Minimum measuring cycles
0.0 to 999.9Ωin 0.1Ωsteps (1A relay)
0.00 to 199.99Ωin 0.01Ωsteps (5A relay)
0.0 to 399.9km in 0.1km steps
80 to 120% in 1% steps
80 to 120% in 1% steps
±2.5km (up to 100km)
±2.5% (up to 399.9km)
2.5 cycles

GRZ100
16
Autoreclose Function
Number of shots
Timer settings
Dead time for single-phase autoreclose
Dead time for three-phase autoreclose
Multi-shot dead line time
Multi-shot reset time
Reclaim time
Pulse width of reclosing signal output
Autoreclose reset time
Reset time for developing fault
One-and-a-half breaker scheme
Follower breaker autoreclose delay time
Voltage and synchronism check element
Synchronism check angle
UV element
OV element
Busbar or line dead check
Busbar or line live check
Synchronism check time
Voltage check time
Operating time of synchronism check element
Operating time of UV and OV elements
1 to 4 shots
0.01 to 10.00s in 0.01s steps
0.01 to 100.00s in 0.01s steps
5.0 to 300.0s in 0.1s steps
5.0 to 300.0s in 0.1s steps
5 to 300s in 1s steps
0.1 to 10.0s in 0.1s steps
0.01 to 100.00s in 0.01s steps
0.01 to 10.00s in 0.01s steps
0.1 to 10.0s in 0.1s steps
5 to 75°in 1°steps
10 to 150V in 1V steps
10 to 150V in 1V steps
10 to 150V in 1V steps
10 to 150V in 1V steps
0.01 to 10.00s in 0.01s steps
0.01 to 1.00s in 0.01s steps
less than 50ms
less than 40ms
Integral Communication Interface (Protection Signalling)
Electrical interface (Telecomm. equipment link)
Applicable standard
Type of code
Connector type
CCITT-G703-1.2.1
CCITT-G703-1.2.2 or 1.2.3
X.21
NRZ (Non-Return to Zero)
D-sub connector
Optical interface (2 km class)
Type of fibre
Connector type
Wave length
Optical transmitter
Optical receiver
Graded-index multi-mode 50/125µm or 62.5/125µm
ST type
820nm
LED, more than −19dBm
PIN diode, less than −24dBm
Optical interface (30 km class)
Type of fibre
Connector type
Wave length
Optical transmitter
Optical receiver
Single mode 10/125µm
SC type (PC polish)
1310nm
Laser, more than −13dBm
PIN diode, less than −37dBm
Optical interface (80 km class)
Type of fibre
Connector type
Wave length
Optical transmitter
Optical receiver
Single mode 10/125µm
Duplex LC
1550nm
Laser, more than −5dBm
PIN diode, less than −34dBm

GRZ100
17
Disturbance Record Initiation
Overcurrent element
Undervoltage element
Pre-fault time
Post-fault time
0.1 to 50.0A in 0.1A steps (1A relay)
0.5 to 250.0A in 0.1A steps (5A relay)
0 to 132V in 1V steps (for phase fault)
0 to 76V in 1V steps (for earth fault)
0.3s fixed
0.1 to 3.0s in 0.1s steps
Communication Port
Front communication port (local PC)
Connection
Cable type
Cable length
Connector
Point to point
Multi-core (straight)
15m (max.)
RS232C 9-pin D-subminiature connector female
Rear communication port (remote PC)
RS485 I/F:
Transmission data rate for RSM system
Connection
Connector
Cable and length
Isolation
64kbps
Multidrop mode (max. 32 relays)
Screw terminals
Twisted pair cable, max. 1200m
2kVac for 1min.
Fibre optic I/F: ST connector, graded-index multi-mode 50/125µm or
62.5/125µm type optical fibres
Ethernet LAN I/F: 10BASE-T, RJ-45 connector
IRIG-B Port
Connection
Cable type
BNC connector
50 ohm coaxial cable
Binary Inputs
Operating voltage Typical 74Vdc(min.70Vdc) for 110V/125Vdc rating
Typical 138Vdc(min.125Vdc) for 220V/250Vdc rating
Typical 31Vdc(min.28Vdc) for 48V/54V/60Vdc rating
Typical 15Vdc(min.14Vdc) for 24Vdc rating
Contact Ratings
Trip contacts
Make and carry
Break
Auxiliary contacts
Make and carry
Break
Durability
Make and carry
Break
5A continuously,
30A, 290Vdc for 0.5s (L/R=10ms)
0.15A, 290Vdc (L/R=40ms)
4A continuously,
10A, 220Vdc for 0.5s (L/R≧5ms)
0.1A, 220Vdc (L/R=40ms)
10,000 operations minimum
100,000 operations minimum
Mechanical design
Weight
Case colour
Installation
10kg (Type-A), 13kg (Type-B)
Munsell No. 10YR8/0.5
Flush mounting or rack mounting

GRZ100
18
a) Minimum operating time (50Hz) b) Maximum operating time (50Hz)
Phase to phase fault
a) Minimum operating time (50Hz) b) Maximum operating time (50Hz)
Phase to earth fault
Note: In the case of a 60Hz relay the operate time is reduced by approximately 15% to 20%.
Figure 15 Operating time curve

GRZ100
19
ENVIRONMENTAL PERFORMANCE
Test Standards Details
Atmospheric Environment
Temperature IEC60068-2-1/2 Operating range: -10°C to +55°C.
Storage / Transit: -25°C to +70°C.
Humidity IEC60068-2-78
56 days at 40°C and 93% relative humidity.
Enclosure
Protection
IEC60529 IP51 (Rear: IP20)
Mechanical Environment
Vibration IEC60255-21-1 Response - Class 1
Endurance - Class 1
Shock and Bump IEC60255-21-2 Shock Response Class 1
Shock Withstand Class 1
Bump Class 1
Seismic IEC60255-21-3 Class 1
Electrical Environment
Dielectric Withstand IEC60255-5 2kVrms for 1 minute between all terminals and earth.
2kVrms for 1 minute between independent circuits.
1kVrms for 1 minute across normally open contacts.
High Voltage
Impulse
IEC60255-5 Three positive and three negative impulses of 5kV(peak),
1.2/50µs, 0.5J between all terminals and between all
terminals and earth.
Electromagnetic Environment
High Frequency
Disturbance /
Damped Oscillatory
Wave
IEC60255-22-1 Class 3,
IEC61000-4-12 /
EN61000-4-12
1MHz 2.5kV applied to all ports in common mode.
1MHz 1.0kV applied to all ports in differential mode.
Electrostatic
Discharge
IEC60255-22-2 Class 3,
IEC61000-4-2 /
EN61000-4-2
6kV contact discharge, 8kV air discharge.
Radiated RF
Electromagnetic
Disturbance
IEC60255-22-3 Class 3,
IEC61000-4-3 /
EN61000-4-3
Field strength 10V/m for frequency sweeps of 80MHz to
1GHz and 1.7GHz to 2.2GHz. Additional spot tests at 80,
160, 450, 900 and 1890MHz.
Fast Transient
Disturbance
IEC60255-22-4,
IEC61000-4-4 /
EN61000-4-4
4kV, 2.5kHz, 5/50ns applied to all inputs.
Surge Immunity IEC60255-22-5,
IEC61000-4-5 /
EN61000-4-5
1.2/50µs surge in common/differential modes:
HV ports: 2kV/1kV (peak)
PSU and I/O ports: 2kV/1kV (peak)
RS485 port: 1kV (peak)
Conducted RF
Electromagnetic
Disturbance
IEC60255-22-6 Class 3,
IEC61000-4-6 /
EN61000-4-6
10Vrms applied over frequency range 150kHz to 100MHz.
Additional spot tests at 27 and 68MHz.
Power Frequency
Disturbance
IEC60255-22-7,
IEC61000-4-16 /
EN61000-4-16
300V 50Hz for 10s applied to ports in common mode.
150V 50Hz for 10s applied to ports in differential mode.
Not applicable to AC inputs.
Conducted and
Radiated Emissions
IEC60255-25,
EN55022 Class A,
IEC61000-6-4 /
EN61000-6-4
Conducted emissions:
0.15 to 0.50MHz: <79dB (peak) or <66dB (mean)
0.50 to 30MHz: <73dB (peak) or <60dB (mean)
Radiated emissions (at 30m):
30 to 230MHz: <30dB
230 to 1000MHz: <37dB
European Commission Directives
89/336/EEC Compliance with the European Commission Electromagnetic
Compatibility Directive is demonstrated according to EN
61000-6-2 and EN 61000-6-4.
73/23/EEC Compliance with the European Commission Low Voltage
Directive is demonstrated according to EN 50178 and EN
60255-5.

GRZ100
20
Optical Interface Unit G1IF1 (Option)
Ratings
Power supply: 110Vdc/125Vdc (Operative range: 88 - 150Vdc)
220Vdc/250Vdc (Operative range: 170 - 300Vdc)
48Vdc (Operative range: 38.4 - 72Vdc)
Burden: less than 8W
Interface
Communication interface:
Operative Range:
Wavelength:
Connector type:
Fibre type:
CCITT-G703-1.2.1
CCITT-G703-1.2.2 or 1.2.3
X.21
less than 1.2km with 62.5/125µm GI fibre (3dB/km)
820nm
ST
62.5/125µm glass fibre
Atmospheric Environment
Temperature
Humidity
Enclosure Protection
IEC60068-2-1/2
IEC60068-2-78
IEC60529
Operating range: -10°C to +55°C.
Storage / Transit: -25°C to +70°C.
56 days at 40°C and 93% relative humidity.
IP40 (without outer-case, excluding terminal parts)
IP50 (with outer-case)
Protocol Converter G1PR2 (Option)
Ratings
Power supply: 110Vdc/100Vac Operative range: 88 - 150Vdc of 110Vdc rated voltage
80 - 120Vac of 100Vac rated voltage
220Vdc/200Vac Operative range: 170 - 300Vdc of 220Vdc rated voltage
200 - 240Vac of 200Vac rated voltage
48Vdc Operative range: 38.4 - 72Vdc
Burden: less than 20W
Communication port
RS232C interface
Connector type
Cable type
RS232C 9-pin D-subminiature connector female
Multi-core (straight)
RS485 interface
Connector
Cable type
Screw terminals (Phoenix Contact, FRONT type)
Twisted pair cable
Optical interface
Operative Range:
Wavelength:
Connector type:
Fibre type:
less than 1.2km with 62.5/125µm GI fibre (3dB/km)
820nm
ST
62.5/125µm glass fibre
IRIG-B
Connector Screw terminals (Phoenix Contact, FRONT-MSTB type)
Mechanical design
Enclosure Protection
Weight
Installation
IEC60529, IP20
5 kg
Flush mounting
Atmospheric Environment
Temperature
Humidity
IEC60068-2-1/2
IEC60068-2-78
Operating range: -10°C to +55°C.
Storage / Transit: -25°C to +70°C.
56 days at 40°C and 93% relative humidity.