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Introduction and Functional Description
Caution: Read This Installation
Manual Carefully and Entirely!
Warning: Do not use digital equipment to read voltage, Hz, or amperage
during this installation. Use only Analog sensing equipment! Failure to do so
may result in damage to equipment or in personal injury!
ALWAYS perform all setup procedures off-line
ALWAYS wear eye protection
ALWAYS strip wire insulation properly or use insulated connectors
ALWAYS use analog metering equipment when setting up the regulator
ALWAYS ensure the static exciter receives ample airflow
ALWAYS use adequate fusing
NEVER hold the static exciter in your hand or lap when energized
NEVER install the static exciter in a place it can be exposed to the elements or moisture
NEVER mount the static exciter over a screw, bolt, rivet, seam, or other fastener
NEVER remove the regulator cover while the unit is in operation
NEVER insert a screwdriver or other object under the regulator cover
NEVER touch any exposed part of the PC300B during operation
NEVER install a switch in the DC portion of the static exciter’s wiring
NEVER USE A DIGITAL FREQUENCY METER (It can give a false reading!)
Functional Description
The PC300B Phase Control is the result of over 30 years of engineering efforts and offers high-
demand features at a competitive price point. The PC300B is a proven design and is engineered
to greatly simplify setup while offering extreme reliability. When properly installed, the PC300B
Phase Control is designed to provide a lifetime of service.
An automatic phase control has several automated tasks it must perform in order to provide
reliable, clean, and regulated electricity. It must maintain a preset setpoint and protect both itself
and the connected load should a fault situation arise.
The PC300B uses field-replaceable cartridge fuses to protect its internal circuitry should a fault
occur and the load current exceeds what the phase control is capable of delivering. It also
contains reliable circuitry that is designed to maintain a setpoint regardless of outside influences
or ambient temperature.
Due to its extreme simplicity, the PC300B Phase Control is uncommonly reliable and offers
features and accuracy usually only offered by much more complicated and often much more
expensive phase controls.
