Mechanical |
Indicators |
Indicating Lamps: 2 amber (overtemperature and bypass mode) 1 green (regulated output present) |
Connections |
Field wired, terminal blocks |
Size and Weight |
See Selection Table |
Safety Agency Approvals |
UL1012 and UL1449-2 cUL (Canadian Standard C22.2 No 125) Complies with Part 15 Subpart J of FCC rules for a Class A computing device |
Environmental |
Audible Noise |
Less than 50 dBA at 3 feet |
Ambient Temperature |
0° to 40°C Operating, 0° to 80°C Storage |
Operating Altitude |
10,000 feet without derating |
Operating Humidity |
95% relative (non-condensing) |
Electrical |
Power Ratings |
20, 30, 50, 75 KVA, Three Phase |
Nominal Voltages |
See Selection Table |
Input Voltage Range |
-25% to +15% of nominal rated voltage. |
Output Voltage Range |
Regulated to ± 5% of nominal voltage with an input voltage range of –25% to +15%. |
Response Time |
Responds to any line variation in <1.5 cycles typical. |
Technology |
Enhance Voltage Regulation (EVR), Microprocessor controlled electronic tap switching. 6 taps switched at zero current crossing with no output interruption. |
Operating Frequency |
57-63 Hz |
Load Power Factor |
No Restriction |
Insulation Resistance |
100 megohms from winding to core measured at 500 VDC |
Efficiency |
96% typical |
Overload Capability |
1000% of rated load for 1 second, 200% of rated load for 1 minute. |
EMI |
Less than 0.2 gauss at a distance of 3 ft. |
Protection |
Under Voltage |
Output voltage will switch to bypass mode when input is less than 50% of nominal. Regulated output voltage will be reestablished once input voltage is with specifications. |
Short Circuit Protection |
Input circuit breaker |
Over Temperature Protection |
Amber lamp indication of over temperature at approximately 180°C. Unit switches to by-pass mode until internal temperature is reduced to specified values. |
Noise Suppression Performance |
Common Mode Noise Attenuation |
150 dB at 100 kHz |
Normal Mode Noise Attenuation |
65 dB at 100 kHz |
Surge Suppression |
Tested to ANSI/IEEE standard C62.41 A&B (IEEE 587 Cat A and B), 1000-4, 1000-5 |