(AVR) Automatic Voltage Regulators: Accessories

Power Factor Controller

Controls and maintains a required power factor condition whilst running in parallel with a mains supply. This unit also incorporates a voltage matching facility for use with basic automatic synchronising equipment.
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APM Alternator Protection Module

Detects under and over voltage without current transformers. The relay output can be used to trip main circuit breaker, de-excite the alternator or stop the engine.
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DFD Diode Failure Detector

Protects the machine against damage caused by failure of the rotating rectifier diodes.
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Dual AVR Automatic Voltage Regulator

Two hard wired MX321 AVRs with a manual change over switch. Reduces down-time in the event of AVR failure.
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MVR Manual Voltage Regulator

Allows manual control of the machines excitation and therefore the output available from the main terminals. Provides manual control of output voltage.
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FDM Frequency Detection Module

Adjustable upper and lower speed limits, a reliable method of disconnecting an engine starter and providing over speed protection.
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ELM Excitation Loss Module

Monitors the excitation to the generator. On loss of excitation an output relay is energised, can be used to initiate alarm or protective device.
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RCI Remote Control Interface

Allows the remote control of AVR’s or PFC’s using industry standard control signals.
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