Enclosure
Single self-supporting unit designed to meet or exceed the requirements of ANSI C57.12.28 for enclosure integrity. Enclosure is constructed of 11 gauge galvanneal steel and is painted Munsell Green No. 7GY3.29/1.5. The base of the enclosure, as well as the capacitor and switch supports consists of C4 x 5.4 structural steel channel for rigidity and skidding into place. The roof is cross-kinked for added strength and water shedding. Removable lifting plates are provided on each corner of the enclosure for easy placement by a crane. The doors have 3-point pad lockable latching door handles and a recessed penta-head bolt. Rear doors contain tamperproof louvers for ventilation. All doors are equipped with door retainers to secure doors in an open position. Enclosure is marked and labeled in accordance with applicable IEEE and NEMA standards and has a permanently stamped non-corrosive nameplate affixed to the enclosure indicating key equipment data.

Vacuum Switches
Low maintenance, long life,  group operated vacuum switches (oil switches are available upon request) are provided to switch the bank on and off.  The vacuum switches have a 200 amp capacitive switching current rating.

Control Power Transformer
A line-to-ground connected control power transformer is supplied with each bank for internal controls of the capacitor bank (i.e. heaters, convenience outlet, switches, etc.) and power factor, var, and voltage sensing.

Fisher Pierce Meter Socket
Each capacitor bank is equipped with a four or six terminal Meter Socket  for accepting standard socket style capacitor bank controllers for var, temperature, voltage, current, and time controllers.  Many of these controllers can be supplied, pre-wired and configured by NEPSI.

Transient Inrush Reactors
Transient inrush reactors can be supplied reduce the high frequency inrush currents associated with back-to-back capacitor bank switching.  The reactors are rated to carry 135% of the bank's nominal current.  They are epoxy impregnated and consist of Copper Magnet Wire. The reactors are typically purchased when other banks are installed in close proximity.

Surge Arresters
Heavy Duty Distribution Class Lightning Arresters can be provided for transient voltage protection of the capacitor bank.

Thermostatically Controlled Fan
A thermostatically controlled fan can be provided for ambient control of the capacitor bank.

Zero Voltage Capacitor Switching Controls
A zero-voltage closing control can be provided to switch the capacitors on at 0-voltage.  This control will virtually eliminate switching transients associated with capacitor energization.  These controls are recommended when the bank is installed near sensitive loads.

Convenience Outlet
A 15 amp GFI convenience outlet can be provided in the control compartment for local power.

Var, Voltage, Temperature, Current Controller
A Fisher Pierce Series 4400 POWERFLEX AutoCap™ Adaptive Capacitor Bank Controller (contact NEPSI for other types and manufacturers) can be installed in the pad-mounted capacitor bank prior to shipment. This controller will automatically switch the bank based on var, temperature, time, voltage, and current.

Blown Fuse Detection System
Each bank can be equipped with a blown fuse detection system (also known as neutral voltage/current unbalance detection system) that will alert plant personnel of a blown fuse.  It consists of a over voltage/current relay and a neutral voltage/current sensor.  The relay has an adjustable set point to trip or alarm upon detection of a blown fuse.

Enclosure Lights
Enclosure lights can be provided for high visibility during maintenance, and to allow for viewing of fuses through the hinged Lexan window.

Other Options:
Stainless steel or aluminum construction, special finishes, single stage or multi-stage, insulated bus, mimic bus, deadfront or livefront design, air-disconnect switch, hinged compartment barriers, ground switch.