Toshiba RC820-HP-Y User manual
TOSHIBA
6F9E0092
RC820 (2E RELAY)
INSTRUCTION MANUAL
RELAY MODELS
RC820-HP-Y-
RC820-AP-Y
AUXILIARY MODULES
RC-81A (GROUND FAULT)
RC-81 B (PHASE REVERSAL)
RC-81C (GROUND FAULT/PHASE REVERSAL)
TOSHIBA CORPORATION
TOSHIBA
6F9E0092
C 0
M
T
E
N
T
S
OUTJ,INI:
____---_--_________-----------------------
INITIAL
IMSPECTION
----_--------------_-----------
APPLICATIONS
__-_________________-----------------
RATINGS AND
PERFORXAPJCZS
-------------------------
PRECAUTIONS
IN
APPLICATIONS ----------------_------
INSTALLATION
---_---_-_____-______________________
CIRCUIT CONSTRUCTIONS ----------_---_--_--________
IIOM
TO SET ---------_-----_-_-_-------------------
SELIKTION
AND
ADJUSTEIENTS
-_-_----_-______________
INSPECTION AND
MAINTEI4ANCE
-----------------------
TROUBLE-SHOOTING
-______________-_________________
INSTALLATION TEST PROCEDURE ----------------------
GROIJND
FAULT TEST FORM ---------------------------
Page
2
2
2
3
7
I. 0
13
16
17
19
20
22
24
-l-
TOSHIEA
6F9E0092
OUTLINE
The 2E Relay (static relay for three-phase induction
motors) is widely used in various industrial fields to
protect induction motors against overloads and other abnormal
conditions (i.e., single phase, unbalanced phases).
Optional plug-in type modules can be installed which include
the
RCRlA
ground fault module,
RCRlB
phase reversal module,
and
RCRlC
ground fault/phase reversal module.
INITIAL INSPECTION
(1)
Check that the 2E Relay and/or additional module is per
ordering specifications.
(2)
Check the 21: Relay and/or additional module for damage
incurred during shipment (breakage, loose parts).
APPLICATIONS
The
2'3
Relay and/or additional module is
used
to protect
three phase induction motors and other three-phase loads, not
only from
ovcrloa~ds
and single phase
conditions
but also from
phase reversal
an83
ground fault.
TI
T:
$a
i!
-
-
TOSHIBA
6F9E
0092
Table
:.
RATINGS AND PERFORMANCES
ists the ratings and performance of the
21?
Relay.
Table 1
Ratings
al
\
.‘..u,.
Type -Form
Items
-'\
Applicable ckcuit
Protective functions
Rated
current
Gverload
operating
characte-
ristics
Single-phase
protection
3perating
zharacter-
istics
Iontrol
voltage
Rat&l
ampere-
turns
Setting
range
Ultimate opera-
ting current
Operating time
setting range
Operating time
accuracy
Minimum
operat-
ing current
operating time
Rating
Tolerance
nc
-.
1
Performances of the 2E Relay
--;gl*
RI,
82’?--
._.
..___..
1
;FE;12
1
Kzi12m
Wee-phase circuits rated up to 600V AC,
50/60
HZ
-
Direct
(Also, applicable to high-voltage circuit:
by
cc&in&q
with high-voltage
CTS)
Dual functions
(2E
relay) ---- Over load a
Single phase protection.
7AT
mmG;-
%~150%
of rated
at-[75+(5+1(l+20+40)%1
105*125%
of current setting
3s40 Sec. for starting characteristics at
600% of current setting
[3+(2+5+10+20)
sec.1
+20% of tine setting
-
85% of current setting under one-phase
ccmpletely
loss state (When
measured
on
either
remaining
phase.)
-- See Fig. 1
--___--.--
Less than 4 sec.
10@~12OV/200+240
V AC,
lrd
,
SO/60
HZ
-
85% s110%
-.-
-~--_
cd
<z
?
-
-
TOSHIBA
6F9E0092
L..
\
Type
-Form
Itemi
Power
consmlption
Output
contact
Control
pzw
circuit
:
__-
Detecting
circuit
contact
arrangement
___-
Contxt
specifications capacity
NEMA
B300
Fault in&cation
Reset
r,ode
Ambient
Application temp:rature
conditions
I
Relative
hwnidity
RC
HP
1Y
HPlY12
APlY
820
-
T
HP~Y
HPZY12
AP2Y
2 VA
-
0.3 VA/phase at rateJ current
1x0
-
NC
(SPDT/FOIIII
C)
12OV
AC-5.OA (Resistive
load)
12OV
AC-3.OA (Inductive load,
pf=0.40)
125V
IX!-0.2A
(iJR=7ms)
250V
DC-O.lA
(IdR=7ms)
LED
RCP?O
--H
PElY
--.
Mdnunl
R&et
Type
RCH20-HP!
,Y12
Man~algRemote
Reset
Jr;82G--A~!~~<.~:
Auto
Reset..T&_e
_...___
-10
?I
+GOOC
45
Q,
85% at 20°C
-
_I
jl
s:
!
i
-
4
-
TOSHIBA
6F9E009'2
The
a'dditional
modules are connected to the 2E relay
with gold plated pins and their principal ratings are the
same as that of
2E
Relay.
In Table 2 is listed its ratings
range and
parformances.
Table 2
Ratings and Performances of optional modules
l-._
_
T&e-Form
RC8lA K81l3 RC81C
Items
Operating
\
90% of
2K
relay 90% of 2E relay
Phase current
current setting current
set&y
reversal Operating
Less than
0.58
Less than
0.5s
zharacteristics
time
Grouncl
fault
411
s
l?A
current zcr
setting Primary
Maximum
fault
current
tiround
fault time o.ls~l.os
l\
o.ls~l.os
settitq
~~
\
htput signal
output contacts of basic relay
-~~~
__._~
-.-..
--
rrip
indication
LED (manual reset)
-______-.
__-
12ik4cnA
12ii:4omA
Connected connected
<CT
Impedance :
Imwance :
zoosl 3oos3
-5-
TOSHIEA
6F9E0092
Overload operating characteristics
Ultimate operating current --- 105-125 of
current setting
Single phase protection operating characteristics
min. operating current --- 85% of current setting
.I~./,
.,
.
;
..,-.
+...
.,.+~
.___
,l,nl---C~Ilii~.-Overload
operating-
L-./,-characteristics-
'?I-Single
NUT,TIPLCS
OF
LOAD CURRENT MULTIPLES OF LOAD CURRENT
STARTING RUNNING
CIIARACTCRISTIC
CliARAC'TEHISTIC
Fi.g .
3. Operating characteristic curve
-.
0
?i
6
-
6
-
TOSHIBA
6F9E0092
PRECAUTIONS IN APPLICATIONS
When planning to use Toshiba Static 2E Relays, be sure
to give full consideration to the following precautions:
(1)
(Control power source supply
The power circuit must be arranged so that control
Ipower
is always supplied to the 2E Relay before the
main circuit is switched ON.
(2) Limit the secondary burden when combining with
external
cT's.
When the relay is used in a medium
or high voltage circuit,
an excessive CT secondary
burden may cause secondary current waveform
distortion.
!;ince
large waveform distortion may be detected as
unbalanced current, limit the external
CT
secondary
burden according to the overcurrent constant while
referring to Table 3.
Table 3
Limit of external CT secondary burden
Recommended Secondary Burden
Not greater than 50% of rating
Not greater than 85% of rating
l(l
or above
Up to rated burden
-
TOSHIBA
6F9E009’2
(3) Application on DC systems
See Fig. 2.
In DC control systems main current does not flow
sinusoidaly even though the power system (voltage)
may be
A
C,
so the 2E Relay, and/or additional
modules, are not applicable.
Three-phase AC power supply
2E
CT
?-
2E Relay
Thyristor
23
DCM DC Motor
Fig.
2 Example of misapplication of the 2E Relay
-
-
TOSHIBA
6F9E0092
(4) The 2E Relay has phase unbalance detecting charac-
teristics.
Figure 4 shows how the current's unbal-
anced trip point depends upon the relay's current
setting and the unbalanced current rate.
Current setting
value:iOo%
Current
Setting
value:125%
50
Current setting
value:150%
I max.:
Max.
phase
cUrrent
00:100
200 300 400 500 600 700
800
-Max.
phase
current (percent of
current setting)
Fig.
3 Phase unbalance detecting characteristics
-
9
-
TOSI-IIRA
6FPE0092
INSTALLATION
1.
Surface Mounting
-
The 2E relay will be shipped with mounting feet loose.
Before
installation,
attach the mounting feet to the
relay as shown Fig. 4.
The below shown mounting feet
and hardware will be shipped together with the relay
as standard accessory.
Do not use a screw-locking agent when tightening.
Mounting
Feet
AcceSSOry
setting
Switches
Time
Setting
Trip Indication
M3.5
ScrfwS
\
5CO.20)
Dia-4
Mounting
Fig.
4 Surface mount type
2E
Relay
-
- -
TOSHIBA
6F9E0092
2.'
Flush
Mountins
For
flush
mounting, flush mounting kit (order separately)
is required.
Before installation, attach the flush mounting fee to the
relay instead of surface mounting feet as shown Fig.5.
Flush Mounting Kit
Parts
I
Quantity
I
Flush Mounting Feet
I
2
I
Flush Cover with Nylatch
1
M4
Screws
4
M4 Spring Washers
4
Mountiny
Panel
EaO(2.36)
kp-4
Nylatch
Terminal Conductor
-
j
170(2'.75)_jj,'
1.6 Min
‘L
3.2 Max
(0.06 min
2,
0.125
max)
Fig. 5 Flush mount type
2E
Relay
.47+0.2)
.66+0.2)
-
8(0.32)Dia
-2 Mounting
Holes
5(0.2)Dia
-4 Mounting
Holes
-
-
TOSHIBA
6F9EO092
3.
Optional Module Installation
Install module with two knurl screws (accessory of
module) as shown Fig. 6 after the relay installation
and wiring to the relay are completed.
For: module installation, peel off the side label on
the relay to open the holes for connection pins.
4.8(0.1?) Fin Contacts
Dia-2 Kounting
,
Holes
-
-+--
-
+
i-
-11.1
--
-
-.
-
-
1
z
6OC2.36)
i
P.20’
1
lsl
cl:Y8,
1
(0.59)
Indicator
Mounting
Fig.
6A
Additional
m'2dul.e
Fig.
68
Combination of
2l?
relay and additional
module
z
5
- -
-
TOSHIBA
6F9E0092
CIRCUIT CONSTRUCTIONS
When wiring primary wires through the CT windows, see
Fig. 9, take care of the following:
1)
Primary wires must go through the correct CT windows.
2)
Primary wires must go through in the same direction.
3)
Primary wires must have the same number of turns through
the CT windows.
Before applying the 2E Relay and/or additional module for
low voltage induction motor protection, see Fig. 8, which
illustrates the typical wiring connections.
Applying the 2E Relay for high
voltage,or
low voltage
large capacity systems, see Fig. 9. It is necessary to
balance the CT secondary load, that is, CT secondary wire
length.
Vumber
of
turns2
Built-in CT window
l
pqqgJ-e
Nwnker of turns
1
2
PCs5
e
-:==
--.T
3 passes
Number of turns 3
Fig.
7
Installation of wires passing through the
built-in CT's
z
!
-
-
TOSHIBA
6F9E0092
Low-voltage
pows!r
supply
200V
21
240V AC
z
In case of low-voltage circuits
(rated at 600V or less)
Applied circuit wire is directly passed
through the built-in CT window.
CAUTION:
*
Connections of control power source
AC
100-120V
--- Terminals l-2
Tow-voltage
induction motor
AC
200-240V
--- Terminals l-3
** Connections of output contacts
NC-contact (opened when the 2E
Relay operated) --- Terminals 8-9
NO-contact (closed when the
2E
Relay operated) --- Terminals 9-10
*** Connections of Remote reset switch
Remote reset --- Terminals 4-5
,'Special
spec.:
/P
RC820-
tl
P
CIY
I
2\\
/
Viiriny
lenqth,from
2F
tn
reset
SwitLh’
\
mu>t
he
1w.s
than
:m.
i
3
i.‘jy.
8
~~~~~~~~~
~pplicatloll
i.r
low-vnlrdg~
induction
motor
circuit
-
-
-
TOSHIEA
6F9E0092
Kigh-voltage power
supp1;,
2.3KV
%
13.8KV
nc PT
Or
Control
transformer
(2.3KV/12OV
or
13.8KV,'120V)
High
voltage
CT
I
r
stop
iigh-voltage
A----
___-
J-
contaqm
t-start
:ontactor
owatl~
+.;i
co11
+
M
~--1
+
\
High-voltage CT secondary circuit
wires pass through the windows of
the built-in
CT's.
High-voltage
induction
:ootor
Fig.
9 Typical application to high-voltage induction
motor circuit with ground fault protection
-
15-
TOSHIBA
6F9E0092
IIOW
TO
SET
The
213
relay is offered in three models,
Model Ampere-Turn Rating
RC820-F:PlY 7AT
RCDi.O-iiP2Y
55AT
RC820-;.:P3Y
1lOAT
with each having
?.n
adjustable (Ampere-Turn) range of
75%150%.
Each model has direct wiring capability through the three
current transformer's windows. This
is limited to 165 amperes
(X820-r!P3Y
).
\. .
For
larger currents, or voltages above
6OOV,
the use of
extern;J
current transformers is required.
Selection of the suitable model
may
require some prelimi-
nary calculations. See "Current Setting Adjustments" to
determine if the calculated
"%
Dial Setting" can be obtained
with the selected model given the
motor's
full load current
(FLA).
Model Selection can also be influenced by wire
Size
limiting
the number of turns that can be passed through the
CT windows (0.75 in. by 0.75 in.).
-.
a
-
16
-
TOSHIBA
6F9E0092
SELECTION AND ADJUSTMENTSSELECTION AND ADJUSTMENTS
(1)
Current Setting Adjustment
N(T)=2E
Amp-Turn Rating
x
External CT Ratio*
-~iotor-F~~
-.--.
~-
N(T)
: Number of turns through the
2E's
built-in CT's,
rounded off to nearest integer (CT wraps are
additive).
Current Setting
%
.Z
Motor FLA x N(T)
~100%
2E Amp-Turn
RAz-xE<ternai
CT Ratio*
*
Exts!rnal
CT Ratio: Ex.
500A/5A
CT's =
1OO:l
If no external CT's are used, substitute with "1.0".
**
For 1.15 Service Factor Motors. If the motor has a 1.0 S.
F., multiply the calculated Current Setting
%"
by 0.93.
-
NOTE :
Select the external
CT'S
ratio so that the current sett-
ing
8
is as close to 100% as possible.
Example
Ul:
5OHP,
4GOV
65A
Full Load, 1.15 S.F.
Across-the-line start.
Since the full load falls within the range of the
55 AT
(75
-
150%)
2E Relay's CT's, and no external
CT's are required,
The 8 Dial Setting _
65~1~100%
= 118% = 115% or 120%
55
Example X2: 2OOHP, 46OV,
240A Full Load, 1.15 S.F.
Across-the-line start.
240 Amps exceeds the highest rated
2E
Relay,
therefore,
external CT's must be used, and the
HPlY
, 7 AT rated
2E,
will be chosen as the
standard model when the current exceeds the
HP3Y
's
rating.
If
300/5
CT's are used,
2
8
- -
TOSHIBA
6F9E0092
the Current Setting 8
=
240
x
N(T)
x
100%
7 x(300)
5
= N(T)
x
57.14%.
And if 2 turns through the 2E Relay's CT windows
(from the external
CT'S)
are used, the
8
Dial
Setting = 2
x
57.14
=
114%
=
110% or 115%
(2) Time setting
Determine the protection curve from 2E Relay operating
curves shown in Fig. 1, and read the operating time at
GOO%
of setting current.
'Adjust the time setting dip
switch to the nearest setting above the operating time.
When using the RC81A or
RC81C
with the 2E Relay, determine
the settings with the same manner mentioned above.
-
(3)
Fault Indication and Reset
The LED on the 2E relay is illuminated by any trip
condition.
The optional module's have individual indicators (LED's).
When the 2E Relay detects an overload, single phase or
phase unbalance condition, and the LED indicator lights,
throw the reset toggle switch to reset the relay.
When the
2E relay
equiped
with an optional module detects a phase
reversal or ground fault
n>f!t-
the
t.G,Jqle
swi
!(
/I
of the 2E relay and optional module to turn off both LED'S.
$
:!
-
-
TOSHIBA
6F9E0092
-
INSPECTION AND MAINTENANCE
Before inspection and maintenance, read the following
items to determine the maintenance period.
Intervals of inspection
(1) When the 2E Relay and/or additional module in an ordinary
electric control room is operated under relatively good
environmental conditions . . . . . Approx. annually
(2) When the 2E Relay and/or additional module is operated
under adverse environmental conditions . . . . . Approx.
semi-annually
Items to be inspected
(1)
Dust accumulation . . . . .
When dust accumulation or contami-
nation is observed near the current-conducting components,
wipe them clean with a soft, dry cloth. Do NOT use
gasol.ine,
bengine,
or other organic solvents.
(2)
Loose
stress
(3)
Presel:
points of the current-setting and time-setting
switches
(4) Operation of the test switch, if necessary
(5) Operating characteristics, if necessary
(6)
Damage or other defects
-
-
This manual suits for next models
2
Table of contents
Other Toshiba Relay manuals
Toshiba
Toshiba Current Relay RC803A-HP1 User manual
Toshiba
Toshiba GRL150-100 Series User manual
Toshiba
Toshiba GRZ100 User manual
Toshiba
Toshiba GR 200 Series User manual
Toshiba
Toshiba GRD130-210 User manual
Toshiba
Toshiba S2E21 User manual
Toshiba
Toshiba GRT100 Series User manual
Toshiba
Toshiba BMS-IFDD03UL User manual
Toshiba
Toshiba GRZ100 B Series User manual
Toshiba
Toshiba GRD110 User manual
