DATA SHEET FOR 38-72 kV DEAD TANK SF6 GAS …
DATA SHEET FOR 38-72 kV DEAD TANK SF6 GAS CIRCUIT BREAKERS
TYPES 38/48/72PM31/40-12/20/30
BREAKER RATINGS AND CHARACTERISTICS
38PM 48PM 72PM
MAXIMUM VOLTAGE, (kV) 38 48.3 72.5
IMPULSE WITHSTAND VOLTAGE, BIL, (kV) 200 250 350
LOW FREQUENCY WITHSTAND VOLTAGE, (kV) 80 105 160
TEN SECOND WET TEST, (kV) 75 95 140
CHOPPED WAVE, 2 (-SEC. WITHSTAND, (kV) 258 322 452
CHOPPED WAVE, 3 (-SEC. WITHSTAND, (kV) 230 288 402
VOLTAGE RANGE FACTOR 1.0 1.0 1.0
31 40
MAXIMUM SYMMETRICAL INTERRUPTING CURRENT, (kA) 31.5 40
SYMMETRICAL I.C. AT MAXIMUM VOLTAGE, (kA) 31.5 40
THREE SECOND CURRENT, (kA) 31.5 40
CLOSE AND LATCH CURRENT, (kA) 50.4 64
RATIO, S, OF ASYMMETRICAL TO SYMMETRICAL I.C. 1.2 1.05
INTERRUPTING TIME, (CYCLES) 3* 5
CLOSING TIME, (CYCLES) 4 6
CONTINUOUS CURRENT, (A) 1200 2000 3000
GENERAL TECHNICAL INFORMATION
TYPICAL DUTY CYCLE O-CO-15SEC-CO-60SEC-CO
PERMISSIBLE TRIPPING DELAY, (SECONDS) 2
MAXIMUM INTERPOLE SPREAD DURING OPENING, (CYCLES) 0.2
MAXIMUM INTERPOLE SPREAD DURING CLOSING, (CYCLES) 0.3
WEIGHT OF LARGEST SHIPPING UNIT, TYPICAL, (LBS.) 4000
WEIGHT OF BREAKER INSTALLED, TYPICAL, (LBS.) 4025
SPRING TYPE OPERATING MECHANISM
ADJUSTABLE RECLOSING TIME, OPTIONAL, (CYCLES) 15 TO 120
CHARGING MOTOR, MAXIMUM CURRENT, (A @ 240 VAC) 10
CHARGING MOTOR, (HP) 1.25
TRIP COIL CURRENT, (A @ 125 VDC) 5A
CLOSE COIL, CURRENT (A @ 125 VDC) 5A
SPACE HEATERS, CONTROL CABINET, (W) 300
SF6 GAS SYSTEM
RATED OPERATING PRESSURE (PSIG @ 70(F) 65
MIN. OPERATING PRESSURE FOR RATED INTERRUPTION, (PSIG @ 70(F) 50
WEIGHT OF SF6 GAS, (LBS.) 25
38DATA: 6-19-98 *5 FOR 48 VDC CONTROL
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