Capacitor and Harmonic Filter Banks for Medium Voltage Utility and Industrial Power Systems

Metal Enclosed Automatic Capacitor Bank

Metal-Enclosed Automatic Capacitor Banks Designed and Built to Meet Your Requirements

	Three-Line Diagrams
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	Elevation & Pad Drawings
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Feel Free to Start With Above Drawing Files For Development of Specifications

Individually Fused Double Bushing Capacitors Mounted on C4-Structual Steel Channel

200 Amp Vacuum Switches With Silver Plated Copper Phase Bus Mounted on C4-Structual Steel Channel

	MV-ACB, Automatic Capacitor Banks - Spec Format
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	MV-ACB, Automatic Capacitor Banks - Standard Spec Format
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	SCADA System For Automatic Capacitor Banks - Standard Spec Format
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	If the above specifications do not meet your requirements, NEPSI will work with you to develop a specification that conforms to your specific application.

1200 Amp Air-Disconnect With Two Line-Side Connected Control Power Transformers and Incoming Current Transformers

Picture Showing a 25kV, 9 MVAR 3 Step 3 Stage Automatic Capacitor Bank Being Offloaded At Customer Site. Bank Was Shipped Fully Assembled and Ready for Interconnection.

	Pricing,Weights & Dimensions
	HTML Format	MV-ACB Budgetary Cost, Dimensions, and Weights

Costs, weights, and dimensions are for budgetary and planning purposes only. For competitive pricing and exact weight and dimensions, contact NEPSI.

Medium Voltage Metal-Enclosed
Capacitor Banks

Northeast Power Systems, Inc. (NEPSI's) Metal-Enclosed Capacitor Banks are designed for industrial, commercial, and utility power systems requiring medium voltage automatic power factor correction. Standard designs are for placement in outdoor or indoor substations (an enclosure integrity option can be added to allow for placement in publicly accessible areas). NEPSI's standard banks can be modified in any way to meet specific requirements.

Product Scope
Voltages from 2.4kV through 34.5kV Reactive power ratings to 20,000 kVar in a single enclosure Short circuit ratings to 40kA Upto 15 Capacitor Steps in a single bank	Comes fully assembled and ready for interconnection Integral air-disconnect switch or roll-out circuit breaker Integral protection and control system Compliant with ANSI, IEEE, NEC and NESC Standards

Standard Features

Enclosure
Free standing, compartmentalized, all welded, 11 gauge galvanneal steel construction with 3 point pad-lockable latching handles and stainless steel hinges. The enclosure is painted with a corrosion resistant ANSI gray-61 enamel paint. NEMA 3R construction is standard, NEMA 12 and 4X are available as an option. Base of enclosure as well as capacitor supports are formed from C4 structural steel. Door stays and windows are standard.

Load Interrupter Air Disconnect Switch
The externally operated air-disconnect provides the "visible-break" required by the NEC. The switch is located in a separate compartment that allows the main fuses and other components located in the capacitor compartment to be maintained without having to disconnect power to the bus feeding the bank.

Ground Switch
An interlocked ground switch is provided to ground the load-side terminals of the incoming air-disconnect switch and/or capacitors for safety during maintenance.

Main Incoming Fuses
Main incoming fuses provide main bus protection and backup protection for capacitors.

Lightning Arresters
Bank is protected from lightning and switching transients with heavy duty distribution class lightning arresters.

Transient Inrush Rectors
NEPSI's TI-Reactors � are provided on each stage to limit the frequency and magnitude of inrush currents from back-to-back capacitor bank switching.

Vacuum Switches
Each stage is controlled by long life low maintenance vacuum switches or vacuum contactors (for voltage less than 6.6kV).

Individual Capacitor Fusing
Each capacitor is individually fused with 40kA current limiting fuses. Fuses are equipped with blown fuse indicators.

Power Termination
Designed to accept NEMA standard single hole or two hole lugs compression lugs.

Capacitors
Low loss, double bushing capacitors that meet or exceed IEC 871, IEEE 18 and CSA standards. Capacitors are connected ungrounded-wye as standard. Internal discharge resistors reduce the residual voltage to less than 50 volts within 5 minutes of de-energization. The dielectric fluid is environmentally friendly, biodegradable, non PCB, with low toxicity. Internally fused capacitors are available upon request..

Key Interlock System
Key Interlock system that dictates safe operation and entry into the capacitor bank.

Blown Fuse Detection System
Various blown fuse detection systems are provided by NEPSI. Based on NEPSI's experience, the most suitable and cost effective system will be recommended and supplied by NEPSI.

Control Power Transformer
A control power transformer is provided for protection, control and operation.

Ground and Phase Bus
A 1/4" X 2" Tin plated ground bus is provided through the width of the enclosure to assist in grounding during maintenance. All phase bus is Tin plated square edged and rated at a minimum of 135% of the bank nominal current rating.

Automatic Capacitor Bank Controller
Capacitor stages are automatically controlled by one of a variety of controllers that can switch stages on an off based upon current, var load, power factor, temperature, time-of-day, metering pulses, or voltage.

Ancillary Controls
On/Off/Auto Switches are standard with stage on and off indicators. Enclosure lights are provided in the control, main-incoming fuse, and capacitor compartments. A convenience outlet is provided in the control compartment.

Warranty
1-year replacement on the switch and capacitors. See NEPSI's standard warranty statement for more details.

Figure 1 - Typical Two Stage Automatic Capacitor Bank
Showing Location of Isolated Compartments and Bank Features

Optional Accessories

Digital Power Meter
A highly advanced digital power meter, suited to many power and control applications can be supplied as an option. This Intelligent Electronic Device (IED) can take the place of numerous tranducers, meters, and control circuits to meet your power monitoring requirements.

Roof Bushings
Roof Bushings to facilitate connection to over-head bus in substations.

0-Voltage Closing Vacuum Switches
0-Voltage Closing Controls can be provided to reduce capacitor switching transients.

NEMA 12/4X Construction
NEMA 12 or 4X construction can be provided as an option.

Current Transformer
Automatic banks can be shipped with a properly sized medium voltage or low voltage current transformer.

Roll-Out Circuit Breaker
An integral roll-out vacuum circuit breaker can be supplied for disconnecting the capacitor bank from the power system.

Exhaust Fan
An exhaust fan can be supplied for forced ventilation of the enclosure.

Metal-Enclosed Capacitor Bank
Ordering Guide

NEPSI's metal-enclosed capacitor banks are built in accordance with the standard features listed in the above specification and your specific requirements. Feel free to contact NEPSI for a quote or to discuss your specific application. For budgetary pricing, preliminary dimensions, and weights, proceed to the following web page; MV-ACB Preliminary Cost, Dimensions, and Weights

For Voltages or Bank Configurations Not Listed, Contact NEPSI.

Figure 2 - Typical Three-Line Diagram. Number of Stages, Ratings, & Specific Bank Configuration & Components are Dependent Upon Voltage Rating &
Customer requirements

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