MIL-T-27/1298
Weight: 1.75 pounds, maximum.
Operating temperature range: -55°C to +130°C. Altitude: 60,000 feet, maximum.
Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds. Dielectric withstanding voltage:
At sea level:
Primary: (1-5); 500 V rms.
Secondary: (6-8), (9-11), (12-14), (18-20), (21-23): 500 V rms, respectively. Shield (24): 500 V rms.
(15-17): 1000 V rms.
At reduced barometric pressure: Primary: (1-5); 300 V rms.
Secondary: (6-8), (9-11), (12-14), (18-20), (21-23): 300 V rms, respectively.
Shield (24): 300 V rms. (15-17): 460 V rms.
Electrical characteristics:
No load: With 115 volts, 400 Hz across (1-5), current in (1-5) shall not exceed 175 mA maximum. Voltage across:
(6-8), (9-11), and (12-14): 79.8 volts center tap, ±2 percent, respectively. (15-17): 169 volts center tap, ±2 percent.
(18-20): 67.48 volts center tap, ±2 percent. (2-5): 47.5 volts, ±2 percent.
(3-5): 26.5 volts, ±2 percent. (4-5): 10.33 volts.
(21-23): 10.67 volts, ±2 percent. (22-23): 2.066 volts.
Rated load: With 115 volts, 400 Hz across (1-5):
(6-8), (9-11), and (12-14): 77.5 volts center tap, ±3 percent at 0.12 ampere rms, respectively. (15-17): 168 volts center tap, ±2 percent at 0.029 ampere rms.
(18-20): 66 volts center tap, ±3 percent at 0.035 ampere rms. (2-5): 47 volts, ±3 percent at 0.425 ampere rms.
(3-5): 26 volts, ±2 percent at 0.94 ampere rms. (4-5): 10 volts at 0.15 ampere rms.
(21-23): 10.2 volts, ±2 percent at 0.2 ampere rms. (22-23): ±2 percent at 0.001 ampere rms.
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