Fully customized, free standing, welded steel construction enclosurewith 12 gauge galvanneal sheet skins, 3-point pad-lockable latching handles and stainless steel hinges. The enclosure is painted with a corrosion resistant epoxy base paint and a polyurethane top coat.
Key Interlock System
Key interlock system has a 5-minute integrated timer to allow for discharge of power capacitor units, safe operation and entry into capacitor bank.
Main Disconnect Switch and Main GroundSwitch
Mechanically interlocked, externally operated, manual chain driven, main disconnect switch and main ground switch. The switches are located in a separate compartment that allows components located within the capacitor compartment to be maintained without having to disconnect power to the bus feeding the bank.
Control Power Transformer
A control power transformer is provided for control, protection and operation of the bank.
Bank is protected from lightning and switching transients with heavy duty distribution class surge arresters.
Copper bus bar rated isfor 1,000 Amperes per inch squared.
Fuse Operation Detection System
Castle Power Solutions uses SIBA fuse operation detectors in conjunction with either pilot lights or a human machine interface (HMI).Unless otherwise requested, every stage receives its own blown fuse detections system which allows for the highest level of reliability.
Power Capacitor Units
Double bushing power capacitor units meet or exceed IEEE-18 and IEC 871 standards; and have a loss of less than 0.2 watts per kVAR. Internal discharge resistors reduce the residual voltage to less than 50 Volts DC within 5 minutes of de-energization. The dielectric fluid is biodegradable, non-PCB, with low toxicity. Power capacitor units are available in a wide variety of kVAR and can be internally fused upon request.
Transient Inrush Reactors
Castle Power Solutions transient inrush air-core reactors are provided on each stage to limit the frequency and magnitude of inrush currents from back to back capacitor bank switching.
Vacuum Switches or Contactors
Each stage is controlled by long life low maintenance vacuum switches or vacuum contactors.
Automatic Capacitor Bank Controller
Capacitor stages are automatically controlled by the SATEC. It can switch stages on and off based on current, voltage, power factor, total harmonic distortion, and temperature.