Power Capacitors
Medium-Voltage, Single-Phase Capacitor
Installation and Maintenance Instructions
IMPORTANT: This instruction literature is
strictly for non internally fused capacitor units.
Product Information
Introduction
Service Information S230-10-1 covers instruction for install-
ing and maintaining the Cooper Power Systems line of
medium-voltage, single-phase capacitors (Figure 1). Where
applicable, the requirements of federal, state, local codes
and insurance underwriters must be fulfilled.
!
Read This Manual First
Read and understand the contents of this manual and
follow all locally approved procedures and safety practices
before installing or operating this equipment.
Additional Information
These instructions cannot cover all details or variations in
the equipment, procedures, or processes described nor
provide directions for meeting every possible contingency
during installation, operation, or maintenance. For
additional information, contact your Cooper Power Systems
representative.
Handling and Storage
Be careful during handling and storage of the capacitor to
minimize the possibility of damage. If the capacitor is to be
stored for any length of time prior to installation, provide a
clean, dry storage area.
CAUTION: Cooper Power Systems power
!
capacitors are housed in hermetically sealed tanks
that contain all-film solid dielectric packs impregnated
with a non-PCB fluid dielectric. Do not drop, jar, or
otherwise handle a capacitor in a manner that would
violate the integrity of the hermetic seal.
Standards
ISO 9001 Certified Quality Management System
Initial Inspection
Immediately upon receipt of a capacitor shipment:
1. Check each capacitor nameplate to make sure the
voltage rating is correct for the system on which the
capacitor is to be applied.
A. Power capacitors must be connected only to
systems on which the terminal-to-terminal voltage
does not exceed rated voltage shown on each
capacitor nameplate.
June, 2013 • Supersedes May, 2001
Terminal
Non-PCB Label
Nameplate
Figure 1.
Medium-voltage, single-phase power capacitor.
B. Capacitors to be connected in delta must be rated at
the line-to-line system voltage.
C. Capacitors to be connected in wye must be rated at
the line-to-neutral system voltage.
2. Check each capacitor tank and bushing for signs of
rough handling or damage in transit.
If a capacitor bushing is damaged or a capacitor tank
n
has dents, bulges, and/or leaks, set the capacitor
aside and file a claim with the carrier and notify your
Cooper Power Systems representative.
CAUTION: Operation at an ambient temperature
!
higher than 55 °C (131 °F) will shorten the service
life of a power capacitor.
Pre-Installation Preparations
1. Make sure that branch circuit conductors have a
current-carrying capacity at least 135% of the operating
current of the capacitor installation.
2. Make sure the ambient temperatures in which the
capacitor installation is to operate is between –50 °C
and 55 °C (–58 °F and 131 °F).
3. Make sure the capacitor installation is protected by
a correctly rated fuse. (Contact your local Cooper
Power Systems representative for fusing application
guidelines.)
Service Information
S230-10-1
Bushing
Tank
1
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