 Johnson Mechanical Services introduces our very own line of power factor correction capacitor banks and harmonic filters. Power factor correction capacitors and harmonic filters are an essential part of modern electric power systems. Power factor correction capacitors are the simplest and most economical means of increasing the capacity of any power system, minimizing energy losses and correcting load power factor. In addition, power factor penalties can be reduced and power quality can be greatly enhanced.
There are several reasons to correct poor power factor. The first is to reduce or eliminate a power factor penalty charged by the utility. Another reason is that your existing transformer is, or shortly will be, at full capacity and installing power factor correction capacitors can be a very cost-effective solution to installing a brand new service. Depending on the amount of power factor correction (kvar that needs to be injected into the electrical system to improve the power factor) and the dynamic nature of the load, a switched capacitor bank may be the best solution. When capacity becomes a problem, the choice of a solution will be dependent upon the size of the increase needed. Like all power quality solutions, there are many factors that need to be considered when determining which solution will be best to solve your power factor problem. Let Johnson Mechanical Services help you to explore and understand your options.
Series 300 Panel Mounted Automatically Switched Capacitor Bank
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Configuration
- Cabinet: Wall mounting 12 gauge steel with ANSI 61 gray, NEMA 1 (gasketed).
- Power line interconnect: Rugged, power distribution block connection.
- Optional Door interlock: Door interlock automatically disengages capacitors. Power continues to be provided to the unit until the disconnect is open.
- Exhaust fan: Provides ventilation; dust filtering optional.
- Safety: Personnel ground fault interruption provides protection in case of accidental contact with control power and ground.
Contactor
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Fully rated for capacitor switching up to 60 kvar at 600 V.
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Integral pre-charge/pre-insertion module standard. The contactor reduces damaging switching transients. This provides safety and durability for the system:
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UL/CSA recognized.
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Controller
- Visual indication of incorrect CT polarity.
- Digital display of power factor and number of energized banks.
- Automatic setting of c/k value (sensitivity based on CT ratio and kvar available).
- Alarm on failed step.
- Visual indication of insufficient kvar to reach target power factor.
- Capacitors disabled in steps within 35 milliseconds of main power interruption.
- Automatic sensing of kvar values per step.
- Optional communications capable (RS-485/ModbusT) from controller.
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Series 300 units availible from 25 to 300 kVAR, 208-240/480VAC. Larger (up to 1000kVAR) and custom configurations including; Internal Molded Case Circuit Breaker, Static Zero State Switching (as opposed to contactor switching), and harmonic filter banks are available as well. Please contact us for further information.
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