KEPCO BOP 100-1, Operator'S Manual

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1
LOAD REACTANCE, PARAGRAPH 1-10D, add the following:
There are two means of eliminating oscillation in the current loop operating with moderate
inductive loads and moderate voltage and current:
1. Add capacitance in parallel with the output (inductive load). The value of capacitor can be
from 0.1 uF to 1.0 uF depending on the value of the load inductance.
2. Add a series-connected resistor capacitor network in parallel with the output (inductive load).
The value of resistor should be in the range of 100 to 500 Ohms and the value of capacitor
should be 0.1 uF to 0.5 uF, depending on the load inductance value.
Both options are recommended when the BOP is used with very low frequency output into
inductive loads.
NOTE:BOP 200W and 400W units may be converted to ML units in order to eliminate oscilla-
tion when dealing with a large range of inductive load values. This upgrade must be
accomplished at the Kepco factory in Flushing New York and includes component
changes and re-calibration of the unit. Please contact Kepco Sales for price and delivery
schedule regarding this upgrade.
When driving heavy inductive loads with high currents, it is possible for the BOP and the load to
be damaged by an A-C input power loss which prevents the load's stored energy from being
dissipated inside the BOP. To avoid possible damage observe the following:
•
Use UPS to supply the BOP.
• Set BOP output current and/or voltage to zero and turn off the BOP after the output current
actually reaches a zero value.
• Use properly rated (voltage and current) bipolar transorbs or a properly rated bipolar crow-
bar element connected directly at the output of the BOP. An alternative is an A-C Normally
Closed Contactor connected directly at the output of the BOP. These options may also be
combined.
KEPCO
®
THE POWER SUPPLIER™
INSTRUCTION MANUAL CORRECTION
KEPCO MODELS:
BOP 100W, BOP 200W, BOP 400W
BOP/093013
KEPCO, INC. z 131-38 SANFORD AVENUE z FLUSHING, NY. 11355 U.S.A. z TEL (718) 461-7000 z FAX (718) 767-1102
email: hq@kepcopower.com z World Wide Web: http://www.kepcopower.com