KEPCO RAX 300W - Manual (Page 2)

2
228-1228 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:
120V a-c input selection, 80V a-c min. (85V a-c min. for model RAX 28-10K)
220-240V a-c input selection, 160V a-c min. (170V a-c min. for model RAX 28-10K)
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 10A.
INPUT SURGE: At 25°C from cold start:
NOTE: There are two input surges at turn-on:
EFFICIENCY: 77% 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 (or 0.5V, whichever is greater). Recovery to 1% (or 0.05V, whichever is greater) 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.
CURRENT LIMIT AND OVERVOLTAGE PROTECTION: Overvoltage interrupts operation until the unit is turned off and
then turned back on for a reset period of approximately 20 seconds. When output falls below 0.7 of nominal due to reaching
the output current limit, output is maintained for approximately 20 seconds. After this time, the output is shut off and the fan
stops. The source must then be turned off and back on for reset. Reset requires about 30 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: 35000feet (10668m)
ISOLATION: (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)
INPUT SOURCE NOMINAL INPUT VOLTAGE MINIMUM INPUT VOLTAGE
120 V a-c input selection 4.6A typ. - 6.0A max. 6.0A typ. - 7.2A max.
220-240V a-c input selec-
tion
2.8A typ. - 3.6A max. 3.3A typ. - 4.0A max.
d-c input selection 7.0A max. (320V input) 9.0A max. (240V input)
INPUT SOURCE FIRST SURGE (5ms max.) SECOND SURGE (3ms max.)
120 V a-c input selection 20A max. 15A typ.
220-240V a-c input selec-
tion
40A max. 10A typ.
320V d-c input selection 40A max. 40A 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%