KEPCO RAX 1500W - Manual (Page 2)

092200 228-1229 REV 2
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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]
INPUT PROTECTION AND SOFT START: A thyristor soft start circuit reduces start-up surge. Units are protected against shorts by an input
fuse. Fuse value 50A.
INPUT SURGE: At 25°C from cold start:
NOTE: There are two input surges at turn-on:
STABILIZATION:
TRANSIENT RECOVERY: A step load change from 50% to 100% of rated load current, produces no more than 4% output voltage excursion, .
Recovery to 1% of the original voltage is less than 1 millisecond. The step load change should be greater than 200ms; Tr, Tf should be greater
than 3ms.
OUTPUT HOLDING TIME: Output is maintained for 20 milliseconds minimum upon input interruption (30 milliseconds typical).
AMBIENT OPERATING TEMPERATURES: See Table 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 20°C ambient, 85% 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:
1.0mA max at 120V a-c (U.L. Method)
2.0mA max at 240V d-c (U.L./VDE Method)
VIBRATION: Three Axes: 1 hour each axis, nonoperating
5-10Hz., 10 mm amplitude , 10-55Hz., 2g FIGURE 1. LOAD CONNECTION - REMOTE SENSING
SHOCK: Three axes, 20g, 11+/- 5 ms pulse duration, 3 shocks each axis, nonoperating
EMI CONDUCTED: FCC Class A
SAFETY: All units designed to meet UL 1950D3, UL 478, CSA Electrical Bulletin 1402C (RAX 48-30K Level 1, other RAX models Level 5),
VDE 0806, TÜV R heinland EN60950 and IEC 950 Safety Standards. R AX are CE marked per the Low Voltage Directive (LVD),
EN60950. [The standards do not apply with DC input operation].
III — OPERATION UNIT WILL NOT WORK WITH SENSE LEADS DISCONNECTED (SEE FIG. 1).
INSTALLING THE POWER SUPPLY: Refer to Figure 3. The unit may be mounted on one of the three mounting surfaces. Mounting holes
are provided for each mounting configuration. The air surrounding the power supply must not exceed the ambient values given in Table 1.
Allow at least 1.0” free space at the rear of the unit to insure free air movement from the fans
.
CONNECTING THE LOAD: The load is connected as shown in Figure 1. Error sensing may be done at the load terminals when it is nec-
essary to compensate for voltage loss in the connecting wires. The jumper links must then be removed from the sense terminals. The unit
will compensate for up to 0.4 volts loss per connecting wire. In the RAX 5-300K it is 0.25 volts.
INPUT SOURCE FIRST SURGE (1/2 of first input cycle) SECOND SURGE (3ms max.)
120 V a-c input selection 20A max. 130A typ.
220-240V a-c input selection 40A max. 160A typ.
320V d-c input selection 40A max. 160A typ.
CHARACTERISTIC TYPICAL MAXIMUM
Source Effect (min - max) 0.2% 1.0%
Load Effect, measured at sensing terminals (10% - 100% load change) 0.3% 1.0%
Temperature effect (0 to 71°C) 0.2% 1.2%
Combined effect (envelope) 0.7% 3.0%
Drift (8 hr. at 25°C after half-hour warm-up) 0.2% 0.5%
LINKS
(SEE NOTE)
NOTE:
THE SENSE LEADS MUST NEVER BE DISCONNECTED FROM THE OUTPUT. IF THE
SENSE LEADS ARE ALLOWED TO FLOAT FREE OF THE OUTPUT, THE OUTPUT VOLT-
AGE WILL RISE TO THE OVERVOLTAGE POINT AND THE UNIT WILL SHUT DOWN.
•
FOR REMOTE SENSING CONNECT THE SENSE TERMINALS TO THE LOAD AS
SHOWN, AND REMOVE THE TWO SENSING LINKS.
•
FOR LOCAL SENSING LEAVE THE SENSING LINKS IN PLACE AND CONNECT THE
LOAD DIRECTLY TO THE BUS BAR.