KEPCO RKW 150W Series Operator Manual - Manual

©2010, KEPCO, INC 1
Data subject to change without notice 228-1446 REV 8
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL (718) 461-7000 FAX (718) 767-1102
http://www.kepcopower.com email: [email protected]
I N S T R U C T I O N M A N U A L
KEPCO
An ISO 9001 Company.
RKW
150W SERIES
150 WATT SINGLE OUTPUT, PFC,
OPEN FRAME POWER SUPPLIES
I — INTRODUCTION
SCOPE OF MANUAL. This instruction manual covers
the installation and operation of the Kepco RKW 150W
Series of Open Frame, PFC (Power Factor Corrected),
RoHS (Reduction of Hazardous Substances) compliant
switching power supplies.
DESCRIPTION. The Kepco RKW 150W Series consists
of seven models of switching power supplies, with a single
output as shown in Table 1. Units may be operated with a
nominal 100V a-c to 240V a-c (input voltage range 85 to
265 Va-c), 50-60 Hz (input frequency range 47-66Hz; units
operate up to 440Hz although leakage current, power fac-
tor and efficiency specifications may not be met). They will
also operate on 110V to 370V d-c input. The RKW 150W
Series employs a forward converter with a fixed switching
frequency of 135kHz. Power Factor Correction (PFC) is
provided by a boost converter operating at 80kHz. Regula-
tion is provided by pulse width modulation. A thermistor cir-
cuit prevents excessive turn-on current surge. Remote
programming of output voltage using an external resistance
can be implemented. Overvoltage and overcurrent protec-
tion is provided. Current limiting with automatic recovery
from short circuit is featured. Units are convection cooled L-
chassis construction. A steel cover (Model CA 36-R) is
available as an option (contact factory for derating with
cover).
Specifications and operating limits for individual RKW
150W models are listed in Table 1. Section II describes
RKW 150W features. Section III contains specifications and
operating limits common to all RKW 150W Series Models.
Section IV describes installation and Section V describes
operation.
TABLE 1. OUTPUT RATINGS AND SPECIFICATIONS, RKW 150W SERIES
MODEL RKW 3.3-35K RKW 5-30K RKW 12-13K RKW 15-10K RKW 24-6.5K RKW 28-5.5K RKW 48-3.3K
OUTPUT VOLTS, d-c 3.3V 5V 12V 15V 24V 28V 48V
ADJUSTMENT RANGE, Vd-c 2.85-4.0 4.0-5.8 9.6-13.2 12-16.5 19.2-26.4 22.4-30.8 38.4-52.8
OUTPUT CURRENT (AMPS)
-10 to +50 °C
35 30 13 10 6.5 (5) 5.5 3.3
CURRENT LIMIT
(2)
(AMPS) 36.75 min 31.5 min 13.65 min 10.5 min 10.5 min 5.78 min 3.46 min
SHORT CIRCUIT CURRENT
(2)
(AMPS)
45 37 18 14 13 9 8.5
OVP SETTING
(1)
(VOLTS) 4.2-5.2 6.0-6.9 13.7-15.7 17.0-19.0 27.0-30.5 32.0-35.0 55.0-60.0
EFFI-
CIENCY
100 Va-c 73% 77% 80% 80% 82% 82% 84%
240 Va-c 77% 82% 84% 84% 86% 86% 88%
RIPPLE
AND
NOISE
(3)
(mV p-p)
Switching ripple
(typ)
80 80 100 100 100 100 130
spike noise
(typ)
(2) 120 120 150 150 150 150 200
External Potentiometer
(4) 1K Ohms 1K Ohms 2K Ohms 2K Ohms 5K Ohms 5K Ohms 10K Ohms
(1) An overvoltage shuts down the output. Recover by recycling a-c input (30 second delay required before resetting).
(2) The current limit is rectangular. After the overload is removed, output is automatically restored.
(3) Bandwidth 100 MHz. Ripple and noise will be approximately 1.5 times these values in the operating temperature range -10 ~ 0°C. The ripple and
noise values tabulated are valid when the output is derated as shown in Figure 1 from 50 ~ 65°C
(4) Used for remote programming of output voltage. See Section V OPERATION, REMOTE VOLTAGE PROGRAMMING.
(5) Peak Current: 10A (useful for motor start applications). Thermal protection (24V model only) cuts off output voltage if overtemperature detected;
after sufficient cooling, output voltage returns automatically.