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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