Introduction; Receiving; Shipping Damage; Storage - GE prolec VR-1 Installation, Operation And Maintenance Manual

1. INTRODUCTION

The Prolec GE Type VR-1 step voltage regulator (Figure 1.) is essentially a single-phase, regulating autotransformer. A
tapped series winding and motor-operated, tap-selector switch afford dependable voltage regulation from 10 percent above
to 10 percent below line voltage in thirty-two, 5/8 percent steps.
The VR-1 Regulator is automatically controlled by the Prolec GE VRC GE-2011 or customer specified control module, which
responds to changes in the system voltage to initiate the desired tap change.
To help maintain dependable service with minimum maintenance, read these instructions carefully before installing or
operating your Prolec GE step voltage regulator.

2. RECEIVING

2.1 Shipping Damage

Immediately upon receipt of the regulator, carefully examine the outside of the equipment to determine any damage or
shortage that might have been incurred during transit. If injury or rough handling is evident, file damage claim with the
transportation company immediately and notify your Prolec GE respresentative or GE account manager promptly.
2.2 Storing
If the regulator is not installed immediately, store in a clean, dry place.

2.3 Warranty

Your Prolec GE VR-1 regulator warranty shall expire twelve (12) months from the date of energization or eighteen (18)
months from date of shipment, whichever occurs first and provided written notice upon discovery of defect.

3. INSTALLATION

3.1 Inspecting

3.1.1 General

Each regulator is shipped completely assembled and filled with the correct amount of oil. The switching mechanism is in the
neutral position, and the voltage bandcenter is set for a normal voltage of 120 volts and a 1.5-volt bandwidth.
Carefully inspect the regulator, particularly the porcelain bushings. If there is any evidence or suspicion that moisture has
entered the tank, dry the regulator and filter the oil before putting the unit in service. After drying, clean off any dirt or dust
inside the tank with dry insulation oil under pressure.
Avoid the use of cottonwaste or similar material, which may become caught in the mechanism. Oil should be visible in the
sight gauge at all times.
Warning: Static charges can be developed when oil flows in pipes, hoses, and tanks. Oil Leaving a filter press may be
charged to over fifty thousand volts (50,000 V). To accelerate dissipation of the charge in the oil, ground the filter press,
the tanka nd all the windings (if accessible). Conduction through oil is slow; therefore, it is desirable to maintain these
grounds for at least one (1) hour after the oil flow has stopped. Remove explosive gas mixtures from any container into
prolec.energy/prolecge
GEH-7299A: Installation, Operation and Maintenance Manual
for Type VR1™ Single-Phase, Step Type Regulators
6