GE prolec VR-1 Installation, Operation And Maintenance Manual

Also see for VR-1: Installation operation & maintenance

GEH-7299A: Installation, Operation and Maintenance Manualfor Type VR1™ Single-Phase, Step Type Regulatorsprolec.energy/prolecge94. Using the UP, DOWN and ENTER buttons: press the UP button until the display indicates ‘BIAS VOLTAGE’– TEST MODE – Press the ENTER button. Press the UP button to simulate increasing the voltage input until theLOWER indicator LED comes on. After a couple tap changes, place the MOTOR CONTROL switch to AUTO andafter the time delay expires the regulator should then start operating to lower the voltage. Return the MOTORCONTROL switch to MANUAL. Press the DOWN button to simulate increasing the voltage input until the RAISEindicator comes on. Place the MOTOR CONTROL switch to AUTO and after the time delay expires the regulatorshould then start operating to lower the voltage. After a couple tap changes, place the MOTOR CONTROL switchto MANUAL.5. Press the ENTER button to cancel the BIAS VOLTAGE and return to the BIAS VOLTAGE screen in the menu.6. Place the Motor control switch in the “MANUAL” position and engage the Raise/Lower switch to the “LOWER”position and run the Regulator to the Neutral position.7. Once the Regulator reaches the Neutral position, the Neutral Light on the adapter panel will illuminate. The yellowpointer on the position indicator should point to “0”.3.3 Exciting the Regulator High Voltage Windings from an External SupplyIf it is desired to test the regulator internally in all positions withan external high voltage power supply, an exciting transformerof suitable size should be used. When a transformer with too lowkVA rating is used, a noticeable voltage drop may occur in thesupply circuit for odd-numbered positions of the regulator. Thisis caused by the additional exciting current required to excite thereactor in the bridging position. This voltage drop does not indicateany fault within the regulator. If a small exciting transformer mustbe used as a source of voltage, the correct ratio can be obtained bysimultaneously reading the input and output voltage. For checkingthe voltage ratio, excite the S-SL bushing with 120 volts. Read theoutput on the L-SL. The exciting current at this level will not causeregulation of the supply.3.4 MountingMount the regulator on a pole or platform. If the control cabinet is to be separately mounted, run control cable betweenthe indicator plug and the control cabinet. A kit is available for mounting the control cabinet at the base of the pole. Forinformation, consult your Prolec GE representative or GE account manager.Regulators can be connected into a live circuit if suitable devices, as indicated in Fig. 5, are in the circuit. If they are notprovided, de-energize the line before proceeding with the installation.Thoroughly ground the regulator tank. If the control cabinet is mounted separately, ground it by means of the cabinet groundstud. Connect the bushing terminals to the line in accordance with the applicable arrangement in Fig. 2 and 3. Allow sufficientflexibility in the lead connections to prevent mechanical strains, due to expansions or contractions, which might break theporcelain.Figure 2. GE 2011 External Power