55
Instruction manual
| Types SDV-R and SDV-R-AR distribution circuit breakers
Table 12: Technical ratings
Footnotes:
1
Circuit breaker is in closed
position.
2
User must supply external time
delay (typically using setting in
reclosing relay) for the minimum
reclose time interval of 0.3 s in
accordance with ANSI/IEEE.
3
Consult factory for -50 °C.
Item
Unit
38.0 kV
Lightning impulse withstand voltage
•
Full wave 1.2/50 µs
•
Chopped wave 2 µs
1
•
Chopped wave 3 µs
kV
200
258
----
Power-frequency withstand voltage
kV
80
Rated short-circuit current
kA
25/31.5/40
%dc component
%
48
Rated closing and latching current
kA peak
65/82/104
Rated duty cycle
•
Reclosing duty
•
Non-reclosing duty
----
O-0.3 s-CO-15 s-CO
Minimum reclosing time
2
s
0.3
Rated power frequency
Hz
60
Capacitance switching
•
Overhead line
A
100
Phase spacing (bushing center-to-center)
inches (mm) 19.5 (495)
External creep
inches (mm) 41.0 (1,040)
External strike-to-ground
inches (mm) 17 (480)
Operating temperature range
3
•
Standard
•
Optional
°C
-30 to +40
-40 to +40
3
Operating mechanism
----
Stored-energy
Closing time
ms
55
Opening time by interrupting time
•
Three-cycle
•
Five-cycle
ms
≤38
≤56
Dual trip coils (mechanically and electrically
independent)
----
Optional
Auxiliary voltages (options)
•
Close, trip and protection
•
Space heaters, auxiliaries
----
Vac
See Table 8
120/240
Contact gap (stroke)
Vacuum interrupter type
1,200 A
2,000 A
mm
18-22
18-22
