Single Phase Step voltage Regulators

FHS Zoom, FR-8 Single Phase Step voltage Regulators are tap-changing autotransformers. They regulate  distribution line voltages from 10% raise (boost) to 10% lower (buck) in 32 Steps of approximately 5/8% each. Voltage ratings are available from 2400 volts (60KV BIL) for 60 and 50 Hz systems.

Features

• Tested per ANSI C57.15 standard
• 1,000,000 times Electrical and mechanical operation
• Tap changer with motor and power supply
• SEL-2431 Voltage Regulator control known for its exceptional precision.
• Programmable without a Laptop
• IEEE C37.118 Synchrophasor Protocol
• Oil drain valve with sampling device
• High-creep porcelain bushings
• Control cabinet with removable front panel
• Conformally coated circuit boards
• MOV-type external series arresters