Koncar konpro User manual

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
MULTIFUNCIONAL TRANSFORMER DIFFERENCIAL
PROTECTION RELAY
Description
Guided by years of experience in the development
and application of protective relays, the
development team at KONČAR - Electronics and
Informatics Inc. has developed a device that can
respond to all the demands that are presently facing
this type of equipment. As a part of the present
generation KONPRO RFD is added to the group of
devices that offer a complete range of protective
functions required for reliable protection of two
winding power transformers and the ability to view
and control for multiple devices. Thanks to its
architecture and modular software solution it is
applicable for the protection of all two winding
transformers.
Apart from the basic protective role, relays provide
a number of other features that are currently
required for protection relays, which allows reducing
the number of devices in the field, which results in
reducing the cost of maintenance of equipment. The
most important options that should be noted are
local and remote display of all currently measured
values, control of all switchgear in the field, their
management, recording of faults, transformer
temperature monitoring, controlling switchgear wear
and transmission of data to the SCADA system.
Time characteristics for trip delay according to IEC
and IEEE standards allow easy integration into
existing relay protection systems, while maintaining
time selectivity applied in the system. Three groups
of settings of protective functions enable rapid
adaptation to changes in the system of protection.
The high degree of programmability derived from
using the program matrix makes it easy to connect
signals to digital inputs and relay outputs of the
device.
The ability to create your own control scheme
makes it easy to configure the relay. Modular
hardware and software architecture allows the
relay, with the use of basic safety features
contained in the basic program package devices,
adding additional safety features, according to user
needs. Integrated software allows you to change
most of the parameters of protective functions via
the front panel. Full adjustment and readout of the
parameters of the relay is performed via computer.
Protection functions
Quick adjustment of the relay to the conditions in
the plant is allowed by three groups of settings
variable via communication or via binary input. In all
three groups, there are the following protective
functions:
Stabilized three-phase differential protection
(ANSI No. 87T)
Stabilized, limited, low-impedance earth-fault
protection of transformer primary
(ANSI No. 87TN-A)
Stabilized, limited, low-impedance earth-fault
protection of transformer secondary
(ANSI No. 87TN-B)
Limited, high impedance earth-fault protection of
transformers
(ANSI No. 87N)
Overcurrent protection of transformer primary
(ANSI No. 50-A, 51-A)
Ground current protection of transformer primary
(ANSI No. 50N-A, 51N-A)
Ground current protection of transformer
secondary
(ANSI No. 50N-B, 51N-B)
Primary transformer unbalance current protection
(ANSI No. 46DT-A, 46IT-A)
Primary transformer loss of phase protection
(ANSI No. 46DP-A)
Transformer thermal overload protection
(ANSI No. 49T)
Primary circuit breaker failure protection
(ANSI No. 50BF)
Inrush protection (based on 2. harmonic)
Trip circuit supervision of primary and secondary
(ANSI No. 74TCS)
Thermic supervision by temperature
measurement
(ANSI No. 23)

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
Control / monitoring functions
Predefined binary inputs for circuit breaker
supervision (BI1, BI2, BI3 and BI4)
Predefined relay outputs for circuit breaker
control (RO1, RO2, RO3 and RO4)
Programmable binary inputs and relay outputs for
signalization and control of other switchgear
Programmable binary inputs for other signals
Programmable relay outputs for signalization
Control of relay outputs for switching of apparatus
locally and remotely
Measurement functions
Currents: IAA, IBA, ICA, IEA, IAB, IBB, ICB, IEB
Symmetrical components: I1A, I2A , I1B, I2B
Differential values: dIA, dIB, dIC, dIE
Fault analysis functions
Event recorder:
- Event recorder
- Trip recorder
- view on the relay screen and with the PC
software
Disturbance recorder:
- Disturbance recorder
- view with the PC software
- can be triggered by binary input
Communication
Locally:
- Front human-machine interface
(membrane keyboards, LCD)
- front communication interface:
COM1 (USB)
Remotely:
Rear optic interfaces:
- COM0 (service / system)
- COM2 (service / system)
Communication protocols:
- IEC 60870-5-103
- IEC 61850
Other functions
Time synchronization
IRIG B, front panel, software
Constant self-supervision
Test option trough PC software
User interface
Graphic LCD –160x128 points
Possibility of defining schematics
4 predefined and 12 programmable LEDs
Setting of parameters and control of apparatus
separated by different passwords
Measurement inputs
8 current inputs –1A, 5A
Binary inputs and relay outputs
8 binary inputs
(3 programmable, 52AA, 52BA, 52AB, 52BB,
IRIG)
8 relay outputs
(3 programmable, CBA TRIP, CBA CLOSE,
CBB TRIP, CBB CLOSE, IRF)
Possibility of adding up to two BI/BO units of A,
B, C or D type
A type –8 binary inputs and 8 relay outputs
B type –16 binary inputs
C type –16 relay outputs
D type –7 RTD inputs and 2 analog inputs**
Modular hardware and software architecture
enables optimization of the relay function to the
point of use (protecting).
(a detailed description of the types of relays is
visible from the ordering codes and tables with a list
of functions) ** on demand

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
The unit housing and connection
The housing of the device is planned for
installation on the mounting plate with a
membrane keyboard on the front side and the
connection terminals on the back.
Dimensions:
(HxWxD = 296.5 x 176.8 x 222.9 mm).
Dimensions of the hole on the mounting plate are
267.9 X174, 2mm. The navigation keys on the
front panel allow easy navigation through menus
of the relay, while for the local display of
parameters and measured values we are using a
graphical display and 16 additional LED.
Connecting the relay to the PowerStation is done
through connection terminals for wires of
crossection 10mm2 (for measuring inputs), 4mm2
(for relay outputs) and 2.5mm2 (the binary
inputs). Built in analog inputs card is adapted for
current inputs of 1A, 5A and 0.2A ** for all device
types. For local communication with a computer
we are using the standard USB interface. For the
realization of remote communication two optical
interfaces with an optical plastic line with V-pin
connector located on the rear of the device are
used. At request of the relay can be supplied with
a glass optical interface for receiving an optical
ST connector.
Set-architecture of the device has a modular
structure, which through the change of hardware
modules enables cheaper maintenance and
simple adjustment of the device almost all the
requirements of the plant.
Thanks to this performance relays can be set to
protect nearly all two winding transformers.
Additional power inputs for measuring ground
current of primary and secondary enables fault
detection in different types of failures and prevent
unwanted trips of differential protection.
Figure 1 Front side of the relay
Figure 2 Back side of the relay

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
Figure 3 Block scheme of the RFD relay

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
Collective review of RFD protective relay functions
ANSI marking
IEC marking
Function
87T –Differential
dI>/>>
Stabilized differential protection
87TN-A Earth fault differential
dIEA>/>>
Stabilized, limited, low impendant earth-fault protection of
transformer primary
87TN-B Earth fault differential
dIEB>/>>
Stabilized, limited, low impendant earth-fault protection of
transformer secondary
87N Restricted earth fault
dIREF>
Limited, high impendant earth protection
50-A –Phase OC
I>/>>/>>>
Overcurrent protection with definite time characteristic
51-A –Phase OC
I>
Overcurrent protection with inverse time characteristic
50N-A –Earth OC
IEA>/>>/>>>
Primary ground current protection with definite time characteristic
51N-A –Earth OC
IEA>
Primary ground current protection with inverse time characteristic
50N-B –Earth OC
IEB>/>>/>>>
Secondary ground current protection with definite time
characteristic
51N-B –Earth OC
IEB>
Secondary ground current protection with inverse time
characteristic
46DT-A –Neg. Seq.
I2>/>>
Primary negative sequence protection with definite time
characteristic
46IT-A –Neg. Seq.
I2>
Primary negative sequence protection with inverse time
characteristic
46DP-A –Unbalance
Iub>
Primary loss of phase protection
49T –Thermal Ov.
3Ith>
Transformer thermal overload protection
50BF
Primary breaker failure protection
Stabilized differential protection (87T)
Differential protection is a basic protection of
power transformers. It works without any time
delay. It protects them in relation to the
intermediate short circuits, as well as in relation
to the earthing at HV side of the transformer,
and in the case of fault in the compounds of the
transformer. Protecting the power transformer
with differential protection is complex, because
its rated current for HV and LV side are different
amounts. In addition, in various groups of
connections (Triangle - star) currents on the HV
and LV side of the transformer are not the same
in magnitude and phase angle that depends on
the hour number of the transformers. Simply by
changing the parameters that describe the type
of transformer and ratios of current
transformers, relay adjusts the angle and the
amount of current in the primary and the
secondary. By entering the correction coefficient
it further stabilizes the protection. To eliminate
unwanted tripping of faults outside of protection
zones there is the possibility of eliminating
ground currents.
Figure 4 The tripping curve of differential protection
The function consists of one stabilized level and
of one standard level. How at the start of the
transformer seldom occur large surge currents
that may cause undesired operation of
differential protection a block of the stabilized
stage of differential protection can be performed.
The blockade is performed by detecting the
second or fifth or both harmonic in the current.
Stabilized, limited, low impedance
ground current protection of the
transformer (87TN-A/B)
Restricted earth-fault protection of transformer is
used for sensitive detection of fault of one of the
windings of the transformer. This type of
transformer fault detection in general is much
more sensitive than the differential protection
fault in the transformer. Restricted earth-fault
protection as well as differential protection works
by comparing the current.
The protection is comprised of one degree. This
level is stabilized with respect to the amount of
current through the transformer and is subject to
the blockade in the detection of energization.
Figure 5 Tripping curve for 87TN

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
Limited, high impedance ground current
protection of the transformer (87N)
Restricted earth-fault protection of transformer is
used for sensitive detection of fault of one of the
windings of the transformer. This type of
transformer fault detection in general is much
more sensitive than the differential protection
fault in the transformer. Differential fault current
can be measured using the circuit in Figure 6
Outdoor unit is shown in Figure 6 consists of
four current transformers which measure the
phase currents and earth current and
stabilization resistor Rs and a variable resistor
Ru.
Figure 6 Connection scheme for the high
impedance ground current transformer protection
The function can be used on the primary or
secondary winding. The variable resistor is
required in the case of large overvoltages.
Overcurrent protection with definite time
characteristic (50 –Phase OC)
The function is derived by measuring the current
in all three phases, and comparing measured
values with preset ones. Inter-independent
algorithms for each phase enable shortest
failure detection time. Three levels of settings for
pickup current and time threshold allow selective
protection settings. In order to enable proper
protection start-up in case of intermitting failure,
the t-drop parameter is added, keeping the
function in start-up during set period of time after
pickup disappearance. Thus protection start-up
is enabled in case of brief consecutive short-
circuits. The start-up time delay is independent
towards current size.
Figure 7 Pickup characteristics of overcurrent
protection with definite time
Overcurrent protection with inverse time
characteristic (51 –Phase OC)
Inter-Independent algorithms supervise current
values in all three phases. Implemented
characteristics enable delayed pickup time
depending on current size or in regard to
characteristics set by IEC or ANSI standards.
The protection function is enabled in case when
the current surpasses the set value by 10%. The
pickup releases after current drops under value
1.05 I>. The derived pickup characteristics are
shown in Table 1.
Figure 8 Pickup characteristics of overcurrent
protection with inverse time

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
Table 1. Implemented pickup characteristics of overcurrent protection
Earth fault protection with definite time
characteristic (50N –Earth OC)
Value measured on current input for earthing
current measurement is used as the pickup
value. Three group settings for protection are
available. The pickup characteristic is equal to
the one of overcurrent protection with definite
time characteristic. The protection function is
realized in a way that it can register earthfaults
with very small currents. Parameterization, as
well as pickup of the protection is possible for
just 1% of nominal current value.
Earthfault protection with inverse time
characteristic (51N –Earth OC)
Current measured on current input for earthfault
measure is used as the pickup value. Pickup
time delay characteristic is equal to that of
overcurrent protection with inverse time
characteristic. Protection function is realized in a
way that it can register earthfaults with a very
small current. Parameterization, as well as
pickup of the protection is possible for just 1% of
nominal current value.
Negative sequence overcurrent
protection with definite time
characteristic
(46DT-NEG. SEQ.)
In order to allow desired operation of protection
in all failure conditions, the protection is realized
in two degrees with definite time characteristic.
Said protection is used to detect failure
conditions that can lead to damage of
equipment powered by electric energy. Those
states can arise from e.g. phase interruption,
unsymmetrical phase load, or absence of
switching in all three poles of the trip switch.
Based on measured phase currents, the
function algorithm calculates the inverse
component I2 value, and compares it to preset
value. The pickup in case of intermittent current
I2 occurrence is realized through the
prolongation of pickup, set by the t-drop
parameter.
Figure 9: The calculation of current I2with one
phase missing
Negative sequence overcurrent
protection with inverse time
characteristic (46IT-NEG. SEQ.)
Said protection for inverse component I2
calculation uses the same algorithm as the
protection described before. The difference
being in time delay of trip, which depends on the
current (inverse time) in this case, in accordance
with IEC standard characteristics. The protection
will generate adequate pickup signals, when the
inverse current component exceeds 10% above
preset value.
Current unbalance protection
(46DP-UNBALANCE)
Current unbalance protection is used in transfer
and distribution grids. It is useful in fault cases
with low load that is hard to detect with inverse
IEC


Normal inverse
0.02
0.14
Very inverse
1
13.5
Extremely inverse
2
80
Long time inverse
1
120
ANSI



Normal inverse
2.0938
8.9341
0.17966
Short inverse
1.2969
0.2663
0.03393
Long inverse
1
5.6143
2.18592
Moderately inverse
0.02
0.0103
0.0228
Very inverse
2
3.922
0.0982
Extremely inverse
2
5.64
0.02434
Definite inverse
1.5625
0.4797
0.21359

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
current protection. As input values of the
function we are using effective values of all
three phase currents. Using the measured
values we calculate minimal and maximal values
i.e. the unbalance current.
%100
max
minmax 


L
LL III
I
Transformer thermal overload
protection (49T-Thermal Ov.)
Protection against thermal overload of
transformers is intended for thermal protection
of the transformer. The principle of operation is
based on the function of the thermal model with
two time constants, which are used for heating
and cooling the transformer. In both cases, the
protection algorithm is used to calculate the
temperature of the exponential curve. The term
used for this is:
When the calculated value of the current
assumes a value greater than or equal to the set
value it will generate the predefined signals.
Trip circuit failure protection
(50BF-CBFP)
After the general trip warrant generation, it is
possible that the trip circuit does not trip for
some reason. Circuit failure reasons can be
various, from line braking towards tripping coil,
to a fault in the circuit itself. In order to cut power
supply to the failed area, the trip circuit failure
protection is activated, whose task is to control
whether the trip based on warrant is realized,
and if not to either trip the breaker through the
second tripping circuit, or to trip the
corresponding next trip circuit that supplies
power to the failure. The trip circuit supervision
is also possible based on signal contact, and
current size through the switch. If the value ON
is chosen for parameter CB-contact, the switch
state function deduces based on the state of the
signal switch. If the chosen value is OFF, the
function deduces the state of the switch based
on measured current through the switch. If that
current exceeds the parameter set by function
Current threshold (0,05ln=default), the function
deduces that the switch remains closed. After
the expiration of time function set by parameter
t-BF, the function will generate the trip signal on
the corresponding relay output. Given that at
RFD devices we have two trip circuits only the
primary one is monitored and if he is not tripped
function generates a trip signal.
Trip circuit supervision
(74TC-Trip C.S.)
In case of trip circuit failure, the trip command
will not cause breaker tripping. Such a state is
extremely dangerous; therefore trip circuit
supervision is used in order to alert personnel to
failure as soon as possible. Trip circuit control is
realized using adequate binary inputs.
Depending on binary input state, the function
deduces whether the trip circuit is in sound or
erroneous state. Two connectivity schemes are
possible –with one or two binary inputs. When
supervising the trip circuit with one binary input
(TCS2), the binary input shall be in lead state,
with a working trip circuit with the breaker on
and off, required that the TRIP contact is not
closed. In order to avoid trip circuit signal failure
on protection pickup, a definite time
characteristic time delay is integrated.
TC failure signal will be generated after
expiration of the time delay. It is necessary to
set the time delay so it is longer than the
duration of TRIP relay closure. Such
connectivity keeps the TC failure signal even in
case the TRIP relay contacts remain
permanently closed after tripping.
Figure 10. Primary trip circuit failure supervision
As with the device RFD there is a switch at
primary and secondary side of the transformer
so there are two control tripping circuit which

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
can be activated separately. In addition, a
request in case of TC failure is the need to block
the breaker closing next to the failed TC.
Breaker closing blockade, on given command
and with TCS function, is achieved by setting TC
fail blk. to state ON.
Figure 11. Secondary trip circuit failure supervision
Transformer thermal supervision by
temperature measurement
(23 Therm. sup.)
The function of thermal supervision of the
transformer temperature by measurement
allows continuous monitoring of the temperature
in seven points using RTD elements. The
measured resistance values from each of the
connected RTD elements are processed in
seven equal mutually independent algorithms.
The choice of two levels of settings for each
element enabling applications in various plants.
Measured temperature values are available to
users via the HMI interface and via serial
communication interfaces. Detecting errors in
one of the connected RTD elements generates
information errors and blocking the issuance of
the signal pickup.
Apparatus wear monitoring
Circuit breaker wear monitoring function, which
is usually performed as an additional function in
the relay protection, gives a good enough insight
into the MV circuit breaker, and as such allows
the rationalization of maintenance costs. Circuit
breaker wear usually depends on the tripping
current and therefore tripping currents in all
three phases are taken as measuring inputs of
the specified function. With circuit wear
monitoring over current an overview of the
number of trips, operating time and number of
manipulations for all other apparatus is given.
Transformer energization detection
(InRush)
When energizing the power transformer, the
energizing currents can surpass nominal values
by ten times. As this is a brief transition event,
this state is not considered a failure. The typical
attribute of this state is the emersion of second
harmonic inrush current in energization current.
The Inrush function for such event detection
measures the size of second harmonic and uses
it to block overcurrent protections, ground
current protection and limited low impedance
ground current protection which could in cases
like these, result in unwanted trip.
Time synchronization
In order to keep internal relay time synchronized
with the time of other relays in the facility,
remote synchronization using communications
(SCADA) or the provided binary input prepared
for IRIG-B time code is enabled.Time setting is
possible using software support or using the
front panel. The integrated battery backup
allows undisturbed work of the clock mechanism
even after auxiliary power failure or
disappearance.
Complete adjustment to facility
equipment
The circuit and software architecture of
protective relays allows adjustment of protection
to implemented measurement transformers and
switches in the facility. Circuit breaker
tripping/closing is often realized using auxiliary
relays, therefore it is sometimes necessary to
ensure a sufficient time interval for trip/close
command impulse. Close command impulse
duration can be adjusted. The factory setting for
trip/close impulse duration is 250ms.
Advanced failure analysis
In order to enable quality event analysis in case
of disturbances or failures in the facility, the
device has an implemented event log list, as
well as a trip log.
Each list can store a maximum of 512 events,
with expansion capability according to the users’
wishes. Events are stored on lists in 2ms
intervals. The selection of events that are to be
stored is chosen via software support.
The integrated battery allows storing of all
events even after auxiliary device power supply
failure or disappearance.

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
Communications capabilities
The layout and markings of keys on the front panel allow intuitive usage of the local communications
interface. The USB interface on front panel, and optical interface on the rear, allow local and remote
communications using IEC 60870-5-103 (61850 optional) protocol. This protocol is accepted as the
international standard for protection parameter transfer and failure recording.
Figure 12. Communications connection schematic for facilities
The figure 12 shows one kind of relay interconnection using the communications inverter. In order to achieve
optimal characteristics, we recommend usage of communications converters from the KONCOM series. The
image illustrates a relay, which is equipped with two optical ports (service and system port), allowing relays to
be connected to the SCADA system and to a remote PC used by protection engineer.

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
Figure 13. Common connectivity schematic of basic relay types to measurement transformers,
with breaker state monitoring

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
Expansion of binary input and relay output number
The figure above shows the schematic of basic relay type, without additional expansion boards with binary
inputs and outputs. Present-day power facilities demand relays to receive and compute a large number of
signals, and send a lot of signals as well. In order to fulfil all potential demands, relays allow expansion of
circuitry with additional binary input and relay output expansion boards.
We offer three types of units, as shown on figure 14. Basic circuit and software architecture are adapted to
receive up to two additional expansion boards of same or different type, depending on demand shown on
order description. The next two pictures show all the basic and additional relay modules.
Figure 14. Schematic of basic and additional relay modules

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
Figure 15. Schematic of basic and additional relay modules

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
HMI interface
HMI interface gives the user a visual overview of the state of the plant, quick and easy access to the
parameters and control of devices in the field. The main display includes the following:
Single line diagram with the current state of the field apparatus showing all devices in the field
Measured electrical values
HMI interface is completely configurable by the user. Since the switching devices change state during
operation, there are four tags for each apparatus used to indicate the possible states: closed, open,
intermediate, undefined. With the single line diagram display fields are associated with certain measurement
depending on the type of scheme.
Examples of schemes

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KON-215-60-33.2-v.1.0-E RFD TEHNICAL DESCRIPTION.doc
TECHNICAL DATA
MEASUREMENT INPUTS
Current inputs
- Number of inputs
8
- Rated current
1 A, 5A
- Rated frequency
50/60 Hz
- Number of connectors per input
3 (1 A, 5 A and mutual)
- Consumption
< 0.5 VA
- Load Capacity
- Thermal
4 In constant, 100 In per one second
- Dynamic
250 In for one half-period
Binary inputs
- Standard variant (on CPU unit)
- Additional card A-type O/I units
- Additional card B-type O/I units
- Additional card C-type O/I units
Number of binary inputs:
8 (52a, 52b, IRIG, 5 programmable)
8 (programmable)
16 (programmable)
0
Voltage setting for binary inputs
18-80 Vdc
80-265 Vdc
Analog inputs**
- Additional card D-type O/I units
8 RTD inputs
2 analog inputs
Measurement area of RTD input
Measurement accuracy of RTD input
-45 –250 °C
1°C
Measurement area of analog input
Measurement accuracy of analog input
0-20 mA
0,5%
Relay outputs
- Standard variant (on power supply unit)
- Additional card A-type O/I units
- Additional card C-type O/I units
Number of relay outputs:
8 (CBtrip, CBclose, IRF, 5 programmable)
8(programmable)
16(programmable)
Number of rear relay outputs
(for tripping/closing)
7 (2 predefined TRIP and CLOSE)
Circuit voltage
≤ 400 Vac/dc
Continuous current
8 A
Admissible current (close and hold) –0.5 s
28 A
Admissible current per contact
Signal relays (I/O unit) triping relays (on power unit)
- For 48 Vdc
2.5 A 8A
- For 110 Vdc
0.5 A 2A
** on demand

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
Local and remote communications
Local communication (on front panel)
- Operating interface –COM 1
USB, IEC 60807-5-103
Remote communication (on rear panel)
- System/Service interface –COM 0
- System/Service interface –COM 2
V-Pin connector, IEC 60870-5-103
V-Pin connector, IEC 60870-5-103 or 61850
Auxiliary power supply
Auxiliary voltage
80-265 Vdc ; 18-80 Vdc
220 -230V, 50Hz
Consumption
- Stand-by
- Operation
Approx. 10 W
Approx. 15 W
Device enclosure
Installation
Using installation plate
Weight
Approx. 7.0 kg
Measurement accuracy
Currents
In range of 10-200% In
0,5% In or 1% current value
Temperature
1°C
Analog inputs
0,5%

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GENERAL INFORMATION
C/CE Conformity
HRN EN 61000-6-2:2001.
EMC directive
HRN EN 61000-6-4:2003.
EMC directive
HRN EN 60950-1: 2005+A11:2005
LVD directive
Electrical testing
Insulation testing
- According to
standard:
IEC 60255-5
- Measurement inputs, binary inputs, relay outputs
2.5kV rms, 50/60Hz
- Class III impact voltage test:
Measurement inputs, binary inputs, relay outputs,
auxiliary power supply
5kV peak value 1.2/50μs, 0.5J,
3 pos. and 3 neg. impulses in 5s interval
EMC testing
- According to
standard:
IEC 60255-22, IEC 61000-4, IEC 61000-6-2, IEC 61000-6-4
- Resistance to short signals at frequency of 1MHz,
IEC 60255-22-1, class III
2.5kV peak value1MHz
400 waves at sec, for 2s
- Electrostatic discharge,
IEC 60255-22-2
IEC 61000-4-2 + A1 + A2
±6kV by contact, ±8kV through air
±4kV by contact, ±8kV through air
- Resistance to electromagnetic field radiation
IEC 60255-22-3
IEC 61000-4-3 + A1 + A2
10V/m, 27-500MHz, 80-1000MHz
10V/m, 80-1000MHz
- Resistance to electric quick transient / brief signal,
IEC 60255-22-4
IEC 61000-4-4
±4kV dc port, ±2kV sig. port, 5/50ns,
5kHz, 60s
- Resistance to high-energy wave signal,
IEC 60255-22-5
IEC 61000-4-5
1.2/50μs, DC clamps: ±1kV dif, ±2kV
comm.
1.2/50μs voltage OK, 8/20μs short circuit
current, 0.5kV
- Resistance to disturbances induced by RF field
IEC 60255-22-6
IEC 61000-4-6 + A1
150kHz-80MHz,
Modulation 80%AM at 1KHz, 10Vef
- Resistance to PF magnetic field
IEC 61000-4-8 + A1
30A/m, 50Hz, 60s, xyz axis
- Resistance to impulse magnetic field
IEC 61000-4-9 + A1
300A/m, 50Hz, 60s, 5 pos. + 5 neg. imp.
10s
- Permanent voltage interference at main clamps
IEC 61000-6-4, EN 55011 + A1 + A2
150kHz-30MHz
- Radio emission
IEC 61000-6-4, EN 55011 + A1 + A2
30MHz-1000MHz

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RFD TEHNICAL DESCRIPTION.doc KON-215-60-33.2-v.1.0-E
Mechanical testing
Resistance testing for vibration, shock, strikes and earthquakes
- According to
standard:
IEC 60255-21
- Resistance to vibration (sinusoidal)
IEC 60255-21-1
10-60Hz, Amp. ±0.035mm
60-150Hz, acceleration 0.5g, class 1
xyz axis 20 cycles, 1octave/min.
- Shock and strikes resistance
IEC 60255-21-2
Shock test: acceleration 5g, duration11ms,
Strike test: acceleration 10g, duration
16ms, class1
- Earthquake resistance
IEC 60255-21-3
8-35Hz 1g x axis, 0.5g y axis, class 1
1-8Hz, 3.5mm x axis, 1.5mm y axis
8-35Hz 1g x axis, 0.5g y axis, class 1
Ambient/climate testing
Thermal resilience testing
- According to
standard:
IEC 60068-2, IEC 60255-6
- Resilience to thermal influence in duration of 16 hrs
IEC 60068-2-1, IEC 60068-2-2
-25°C to +70°C
- Temporarily allowed installation temperature in duration
of 96 hrs
-10°C to +55°C
- Recommended constant installation temperature
IEC 60255-6
-5°C to +55°C
- Recommended constant storage temperature
IEC 60255-6
-10°C to +55°C
Humidity resilience testing
- According to
standard:
IEC 60068-2-30
- Resilience to elevated temperature with elevated
humidity
IEC 60068-2-30
+55°C at 95%rel.humidity, duration of
96hrs
Degree of enclosure mechanical protection
- According to IEC 60529
Front: IP50
Rear: IP20
Additional testing
Testing of permissible thermal load of measurement current inputs
- Permanent
- In interval of 5s
- In interval of 1s
4In, effectively
40In, effectively
100In, effectively