KEPCO KRR 12-40 Railroad Battery Charger - Manual

©2006, KEPCO, INC 1
Data subject to change without notice 228-1562
I N S T R U C T I O N M A N U A L
KRR KEPCO
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]
An ISO 9001 Company.
12-40
12 VOLT, 600W RAILROAD BATTERY CHARGER
I — INTRODUCTION
SCOPE OF MANUAL.
This instruction manual covers the installation and operation of the Kepco Model KRR 12-40 12-Volt, 600W Railroad Bat-
tery Charger.
DESCRIPTION.
The Kepco Model KRR 12-40 12-Volt, 600W Railroad Battery Charger is a wall-mounted unit designed to charge 12-Volt
lead-acid or nickel cadmium batteries used in railroad applications. The output voltage is set to 13.50V d-c, and is adjust-
able from 10.5 to 18V d-c from the front panel recessed trimpot. An optional temperature compensation probe (supplied)
provides automatic adjustment of the float voltage to accommodate temperatures from 0° to 50°C. 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.).
Both line and neutral lines are protected by 20A fuses. A front panel ammeter shows charging current.
The heart of the Model KRR 12-40 is a 600W solid-state switching power supply, Kepco’s RKW 15-43K-26568, which has
an integral cooling fan. A front panel CHARGER ON indicator lights while input power is applied to the a-c input terminals.
The front panel TEMP PROBE ERROR indicator lights to show that the temperature compensation probe is not connected
to the unit or is inoperable. An internal diode network across the output provides protection in the event that the battery
connections are reversed, causing the front panel circuit breaker to open.
FEATURES
• Wide Range Input - Operates from input voltage range of 85 to 265V a-c, input frequency range 47-
66Hz with no adjustment or modification required.
• Adjustable Float Voltage - The float voltage is factory set to 13.50V d-c, and is adjustable from 10.5 to
18V d-c at the front panel by connecting a precision voltmeter to the + and – VOLTAGE MONITOR test
points and adjusting the output using the V. FLOAT ADJUST potentiometer.
• Temperature Compensation - An optional temperature compensation probe (supplied) provides auto-
matic adjustment of the float voltage to accommodate temperatures from 0° to 50°C for lead-acid batter-
ies.
• CHARGER ON indicator - on while a-c input power applied to unit and unit is operational.
• Charging Current ammeter - indicates charging current
• Input protection - Two line fuses (20A/250V) are provided.
• Battery connection protection - If battery connections are reversed, an internal diode network across
the output is forward biased; the resulting current flow causes the front panel circuit breaker to pop
open. The connections must be switched and the circuit breaker turned on to reset.