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22
5
Trip Devices
Capacitor trip device
In conjunction with the continuously-rated shunt trip device,
the capacitor trip device can be used to trip the ACB within a
limited period of 30 sec if a large voltage drop occurs due to an
ac power failure or short-circuit.
When the continuously-rated shunt trip is used with a capacitor
trip device, “a” contact of auxiliary switch of ACB should be
inserted in series, otherwise internal damage may occur.
Continuously-rated shunt trip device
The continuous-rated shunt trip device allows the ACB to be
opened when an external protection relay against overcurrent
or reverse power is activated.
Because of its continuous rating, the device can also be used
to provide an electrical interlock to the ACB.
Continuously rated shunt trip and undervoltage trip can not be
fitted to the same ACB. However, Instantaneously rated shunt
trip can be used together with undervoltage trip with special
specification. Special double opening and closing coils are
available, contact TERASAKI for details.
1
2
3
SHT
4
CAPACITOR TRIP
POWER SUPPLY
AC100V~120V
¶
1
¶
1: Use Auxiliary Switch for capacitor trip
Auxiliary Switch
User Wiring
PB (OPEN) or
OCRy etc.
A
B
10
20
AVR–IC
1
NP
2
3
4
NEON LAMP
POWER SWITCH
2–ø6.5Mtg.holes
70
95
100
120
140
76.5
Shunt Trip Rating (Continuously rated type)
Rated
Operational
Peak excitation Steady–state Opening time
Type
voltage
voltage
current
current
(max.)
(V)
(V)
(A)
(A)
(ms)
AC100
AC70–110
0.48
0.32
AC110
AC77–121
0.39
0.26
AC120
AC84–132
0.37
0.24
AC200
AC140–220
0.24
0.16
AC220
AC154–242
0.19
0.13
AC240
AC168–264
0.18
0.12
AVR–1C
DC24
DC16.8–26.4
1.65
1.1
40
DC48
DC33.6–52.8
0.86
0.57
DC100
DC70–110
0.39
0.26
DC110
DC77–121
0.37
0.25
DC125
DC87.5–137.5
0.31
0.21
DC200
DC140–220
0.19
0.13
DC220
DC154–242
0.18
0.12
Type
AQR-1
Rated Voltage
AC100-120V
Operational Voltage
Rated Voltage X 70 to 110%
Rated frequecy
50/60Hz
Rated Voltage of Shunt Trip Used
DC48V
Power Consumption
100VA
• Control Circuit
• Outline Dimensions
4
Accessories for Spring Charged Operation
Automatic closing spring release
This device allows the charged closing springs to be automati-
cally released when the ACB is drawn out.
ANSI or NEMA-compliant ACBs require this option.
Spring charge indicator
This switch can be used to indicate that the closing springs
have been fully charged.
For contact ratings of the switch, see table
c
- 1 on page 28.
Specifications
4