KEPCO RAX 50W - Manual (Page 2)

2
228-1225 REV 2 092200
KEPCO, INC. !"! 131-38 SANFORD AVENUE !" FLUSHING, NY. 11352 U.S.A.!" TEL (718) 461-7000!"! FAX (718) 767-1102!!
http://www.kepcopower.com "! email: [email protected]
BROWNOUT VOLTAGE:
115V a-c input selection, 80V a-c min. (82V a-c min. for model RAX 28-1.8K)
230V a-c input selection, 160V a-c min. (164V a-c min. for model RAX 28-1.8K)
320V d-c input selection, 220V d-c min. (Jumper in 230V a-c position)
INPUT CURRENT: (maximum load at 50°C with nominal output voltage):
INPUT PROTECTION AND SOFT START: A triac soft start circuit reduces start-up surge. Units are protected against shorts
by an input fuse. Fuse value 3.15A.
INPUT SURGE: At 25°C from cold start:
NOTE: There are two input surges at turn-on:
EFFICIENCY: 75% typical
STABILIZATION:
TRANSIENT RECOVERY: A step load change from 50% to 100% of rated load in 50 microseconds or more, produces no
more than 4% output voltage excursion. Recovery to 1% of the original voltage is less than 1 millisecond.
OUTPUT HOLDING TIME: Output is maintained for 20 milliseconds minimum upon input interruption (30 milliseconds typi-
cal) with nominal input voltage and output load at 50°C current rating.
OVERVOLTAGE PROTECTION: Fixed, factory set. See Table 1. The overvoltage circuit is reset by interrupting input for
approximately 15 seconds.
OPERATING TEMPERATURE: 0 -71°C. See the derating graph, Figure 1.
STORAGE TEMPERATURE: -20°C to + 75°C.
HUMIDITY: 20% to 95% relative humidity, noncondensing
ALTITUDE:
Operating: 10,000 feet (3048.0m)
Nonoperating: 35,000 feet (10,668m)
ISOLATION: (at 25°C ambient, 65% relative humidity):
Between input and output terminals, 3.75 KV a-c for 1 minute (with Y-capacitors removed).
Between input and output or chassis, 2000V a-c for 1 minute.
Between output terminals and chassis, 500V a-c for 1 minute.
INSULATION RESISTANCE: Between output and chassis, 100 megohms minimum (500V d-c)
LEAKAGE CURRENT:
0.5mA max at 120V a-c (U.L. Method)
0.75mA max at 240V d-c (U.L./VDE Method)
VIBRATION: Three Axes:
5-10 Hz., 10 mm amplitude
10-55 Hz., 2g
INPUT SOURCE NOMINAL INPUT VOLTAGE MINIMUM INPUT VOLTAGE
120 V a-c input selection 1.2A typ. - 1.6A max. 1.3A typ. - 1.8A max.
220-240V a-c input selection 0.6A typ. - 0.8A max. 0.7A typ. - 0.9A max.
d-c input selection 0.4A max. (320V input) 0.6A max. (240V input)
INPUT SOURCE FIRST SURGE (5ms max.) SECOND SURGE (3ms max.)
120 V a-c input selection 17A max. 5A typ.
220-240V a-c input selection 34A max. 3A typ.
320V d-c input selection 34A max. 3A typ.
CHARACTERISTIC TYPICAL MAXIMUM
Source Effect (min - max) 0.8% 1.5%
Load Effect, measured at sensing terminals (10% - 100% load change) 0.8% 1.5%
Temperature effect (0 to 71°C) 1.0% 2.0%
Combined effect (envelope) 2.0% 4.0%
Drift (8 hr. at 25°C) 0.1% 0.5%