Above picture shows a typical double-bushing single-phase 7960 Volt 500 kvar capacitor.

Picture shows individually fused capacitor mounted on its side with a current limiting fuse connected directly to its terminal. Current Limiting Fuse - Click to See Specification Double Bushing Capacitor - Click to See Specification C4 - Structual Steel Mounting C4 - Structual Steel Mounting


Capacitors

NEPSI's Metal-Enclosed Capacitor Banks and Harmonic Filter Banks normally come equipped with individually fused single-phase double-bushing capacitors. The capacitors are typically connected in an ungrounded-wye configuration, but can be connected in a grounded-wye configuration or a double-ungrounded-wye configuration for technical or preferential reasons.

The capacitors have a low loss, non-PCB, all film design that meet or exceeds IEEE, IEC, and ANSI standards. NEPSI utilizes capacitors from one of three North American suppliers based upon quality, price, leadtime, and availabiliy at time of order. Specific request for a particular supplier may be made when initiating a request for quote from NEPSI.


NEPSI typically utilizes single- phase double-bushing capacitors from one of three North American Manufacturers.

Capacitors utilized in harmonic filter banks are de-rated with the following considerations:

  • Harmonic current peaks having 100% coincidence
  • Nominal system over-voltage of 5%
  • Ambient voltage distortion equal to the limits set forth by IEEE 519 (at the PCC) or values obtained during measurement or as provided by customer
  • Adherence to IEEE/ANSI peak (crest) and RMS capacitor voltage ratings.

Typical Capacitor
Specifications

Externally Fused Units:
50 to 600 kvar in voltages from 2.4 kV through 24.94 kV
Maximum Current:
180% of Rating (RMS)
Internally Fused Units:
200 kvar to 1000 kvar in voltages from 2.4 kV through 12.47kV
Maximum Voltage:
110% of Rating (RMS)
Fuseless Units:
100 kvar to 1000 kvar in voltages from 2.4kV to 19.92 kV
Maximum kvar output:
135% of Rating
Frequency:
50 Hertz or 60 Hertz
Capacitor Tolerance:
-0 to +10%
Dielectric:
Polypropylene
Temperature Range:
-50C to +50C
Impregnation fluid:
Non-PCB
Maximum altitude:
1000 meters (without derating)
Discharge resistors:
Internal, will discharge to 50 volts within 5 minutes
Case Material:
Stainless Steel
Standards:
NEMA CP1, IEEE 18, IEC 871 or CSA C155.
Paint Color:
ANSI 70 Gray
Dielectric Losses:
0.07 watts/kvar
Bushings:
Wet-process glaxed porcelain


Single Phase Capacitor
Literature

 
ABB
Adobe Acrobat Files ABB Product Literature Cooper Power Systems Product Literature General Electric Product Literature


Northeast Power Systems, Inc.
66 Carey Road
Queensbury, New York 12804
Phone: 518-792-4776
Fax: 518-792-5767

E-mail: sales@nepsi.com
Website: www.nepsi.com

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