Toshiba RC820 Series User manual

TOSHIBA
2E MOTOR
PROTECTION
RELAYS
MODEL RC820
" OVERLOAD & SINGLE-PHASE
PROTECTION
" SOLID-STATE
" MANUAL TESTFEATURE
" MANUAL/REMOTE/AUTO RESET
"
SURFACE/FLUSH MOUNTING

2E MOTOR
PROTECTION
RELAYS
MODEL RC820
L1/R
L2/S
L3/T
Load circuit
Toshiba's 2E
relay eliminates
many motor
failures
. This
solid state
relay features
precise
motor
protection for any
horsepower/voltage
combination in just three ratings .
The2E
provides overload and single phase
protection
and has an adjustable setting
for very wide
" OVERLOAD
& SINGLE-PHASE
PROTECTION
Two
protective
functions are
incorporated .
" SOLID-STATE
Fully solid-state
circuit provides
high reliability
and
precise
operation .
"MANUAL
TESTFEATURE
Manual
test switch
offers
convenience for sequence
testing .
"
MANUAL/REMOTE/AUTO
RESET
Wide
selection of
reset mode
gives application
flexibility .
range from 3 to 40
sec . (starting
characteristic,
at 600% current)
to accomodate reduced
voltage
start-ups and high
inertia loads .
The2E relay
complies with international
standards
as well as UL
(USA) listed
and CSA
(Canada)
certified .
Current
setting
circuit
"
SURFACE/FLUSH
MOUNTING
Selectable
surface or flush
mounting .
"
FLEXIBILITY
The relay
allows for a
high degree of flexibility
for
coordinating with
wide range of
current and trip time
settings
.
" VISIBLE TRIP
INDICATOR
LED
indicator shows
relay trip status
clearly until reset .
"
INTERNATIONALLY
RECOGNIZED
The relay complies
with international
standards as well
as UL
(USA) listed and
CSA (Canada)
certified .
--
I
IE~~~1~~
Rectifier
circuit
Rectifier
circuit
Amplification
circuit
Smoothing
circuit
Smoothing
circuit
Phase
current
detecting
circuit
Single-
phase
failure level
discrim-
inating
circuit
Timer
circuit
O
Voltage
regulating circuit
Operating time
setting circuit
Timer
circuit
Power
supply
circuit ~I I
Indication/
output
Circuit
b
a
8
9
10
Control
power
supply
Remote
reset
contact
Not
used
Output
contacts

CONTROL TERMINALS
CURRENT SETTING
TRIP TIME SETTING
LED TRIP INDICATOR
TEST/RESET SWITCH
(SPRING RETURN)
FLUSH MOUNTING FEET
FLUSH COVER

NOMENCLATURE

SELECTION
RC820-HP 1 Y 12
(1)

(2) (3) (4) (5)
(1) Model
(Series) No .

RC820
(2) Reset Mode

HP ... Manual Reset
AP .... Auto
Reset
(3) Current Rating

1 ...... 7 AT
2 ...... 55
AT
3 . . .... 110 AT
(4) Control Volt .

Y . . ....
100-120/200-240 V AC
(5) Variation

. . . . . . Standard Surface
Mounting
2 ...... Flush Mounting
12 .... Remote Reset (Standard)
72
.... Remote Reset
(UL Listed/CSA
Certified)
RATINGS &
SPECIFICATIONS
RESET MOUNTING UL & CSA
MODEL NO .
SURFACE YES
RC820-HP == := : 'Y
MANUAL
FLUSH NO
RC820-HP :=_ :='Y2
AUTO SURFACE
-Y
ES RC820-AP-'L------'Y
NO
RC820-HP[==== Y12
REMOTE
SURFACE
YES RC820- HP ~=_= . Y72
Model RC820- RC820-
RC820-
HP1Y HP2Y HP3Y
Item
AP1 Y AP2Y AP3Y
Applicable
Circuit
Three-phase circuit rated up to
600V AC, 50/60 Hz-Direct
(Also, applicable to high-voltage
circuit by combining with high-
voltage CT)
Rated Current Rated
Ampere-turns (AT) 7AT
55AT - : I 110AT
Setting Range 75-150% of
rated AT
Overload Protection
Ultimate Operating
105-125% of setting current
Current
Trip Time Setting Range 3-40 sec
. for starting characteristics at 600% of setting
current
Operating Time
=j=20%
of setting time
Accuracy
Single-Phase
Protection Minimum Operating
85% of setting current under one-phase
completely loss (When
Current
measured on either
remaining phase) .
Operating Time
Less than 4 sec .
Control Power Rating
100-120V/200-240
V AC, 10, 50/60 Hz
Allowable Volt .
85%-110%
Fluctuation
Power Consumption
Control Power Circuit 2 VA
Detecting (CT) Circuit 0 .3 VA/phase at
rated current
Output Contact
Capacity Contact Arrangement 1 NO-NC
(SPDT/Form C)
Contact Capacity
120V AC-5 .OA (Resistive load)
120 V AC-3 .OA (inductive load, pf=0 .40)
125V DC-0 .2A (L/R = 7ms)
250V DC-0 .1 A (L/R = 7ms)
NEMA B300
Weight Approx
. 1 kg (2 .2 lbs .)

OPERATING CHARACTERISTIC CURVE
800
500
400
300
200
100
80
50
40
30
20
10
8
5
4
3
10
0 .8 1

2

3 4
5 6

8 10
MULTIPLES
OF LOAD CURRENT
STARTING CHARACTERISTIC
v20
800
500
400
300
200
100
80
50
40
30
10
8
5
4
3
(Notes) (1) Overload operating characteristics
Ultimate operating current---105-125%
of setting
current
(2) Single-phase operating characteristics
Min . operating current " --85% of setting current
0 .8 1

2

3 4 5 6 8 10
MULTIPLES OFLOAD CURRENT
RUNNING CHARACTERISTIC
Overload operating
characteristics
.v
w
~"38
40
33 35
-
-~
28
30
25
23
20
operating
Single-phas
characteristics
18
15
13 -
10
8
5
3
Overload operating
I
INEW
v
INS
w
40
38
33 35
I\`\
28 30
23 25
20
18
15
13
10
8
Single-phase operating -` -
5
characteristics

INSTALLATION
40 (1 .58)
Mounting
Panel
SURFACE MOUNTING
1 .6 Min-3 .2 Max
(0 .06 Min-0
.125 Max .)
FLUSH
MOUNTING
5(0 .20)
Dia-4
Mounting
Holes
8 (0 .32) Dia-2
Mounting Holes
Unit
: mm (in)

WIRING
Low-voltage
power supply
600 V AC
or less
HOW TO SET
LOW-VOLTAGE
(Notes)

*Connections of control power source
AC 100-120V-Terminals 1-2
AC 200-24®V-Terminals
1-3
For
other volt ., use CPT .
`"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
Selection of the
suitable model may require some
preli-
minary calculations . See "Current
Setting" to determine
if
the calculated
"Current Setting %" can be obtained
with the selected
model given the motor full load current
(FLA) . Model Selection
can also be influenced by wire
size
which limits the number of
turns that can be passed
through the CT
windows .
(1) Current Setting
Nk
I )
® (2E AT Rating) x (External CT Ratio)
FLA
N(T)=Number of wire turns through 2E built-in CTs,
round off to nearest integer .
(2E AT Rating) x (External CT Ratio)
Notes :

"Select the external CT ratio so that the current
setting
% is as close to 100% as possible .
If no external CT 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 . (Practice in USA)
High-voltage
power supply

PT or control transformer
2 .4KV-13 .8KV AC

(100-120V Secondary)
High-voltage CT secondary circuit
wires pass through the windows of
the built-in CT's .
HIGH-VOLTAGE
Example : 200HP, 460V, 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 HP1Y, 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,
the Current Setting %
=
240 x N(T)
x100%
7 x (300)
5
N(T) x 57 .14®/0 .
And if 2 turns through the 2E Relay's CT
windows (from the
external CT's) are used,
the % Dial
Setting = 2 x 57 .14
=114%=110% or 115%
(Current
Setting %)=
FLAx N x 100
(2) Time setting
Determine the protection curve from 2E Relay
operating curves,
and read the operating time at 600%
of setting current . Adjust the time setting dip
switch
to the nearest setting
above the operating time .

ORDERING
INFORMATION
When ordering specify ;
" Model No . & Quantity
" Any Special Requirement
TOSHIBA
TOSHIBA
CORPORATION
Industrial
Equipment Department
1-1
. SHIBAURA 1-CHOME . MINATO-KU
. TOKYO . 105 . JAPA N
PHONE : [phone] . FAX :
5444-9268
'96-7O(NA)7094
Toshiba International
Corporation :
Houston,
Vancouver
Toshiba International Corporation
Pty . Ltd . : Sydney,
Melbourne
Toshiba International
(Europe) Ltd .
: For further information,
please contact your nearest Toshiba Liaison
Representative or International
Operations-Producer Goods .
The data given in this
catalog are subject to change without notice .
Printed in Japan