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
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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 ---------------------------
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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:
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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
?
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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 -
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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-
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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
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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
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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
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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
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