GE Entelli-Switch 250 manual Testing, Introduction, Test Options, Auto Position, Test Position

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Testing

CAUTION

Due to hazardous voltage and current, GE Zenith recommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch.

WARNING

Both power sources must be disconnected before manual operation of the switch.

Introduction

A manual operator handle is provided with the transfer switch for maintenance purposes only. Manual operation of the switch must be checked before it is operated electrically. Both power sources must be

disconnected before manual operation of the

switch. Insert the handle and operate the transfer switch between the Source 1 and Source 2 positions. The transfer switch should operate smoothly without binding. Return the switch to the Source 1 position, remove the handle, and return it to the holder provided.

After completing the inspection, cleaning and servicing of the transfer switch, reinstall the switch cover, and close and lock the cabinet door. Reclose the circuit breakers feeding the utility and generator sources to the switch.

Initiate the electrical transfer test by activating the test switch. P timer will time out and the microcon- troller will send an engine start signal. When

the W time has elapsed, the switch will complete its transfer by closing into the Source 2.

Deactivating the test switch will start retransfer to Source 1. The switch will complete its retransfer to Source 1 after the time delay of the T timer. The U engine overrun timer allows the engine generator to run unloaded for a preset cool down period.

Test Options

The ATS can be tested in either of two positions:

1)“Auto Position”

Full Transfer Test - This test checks the complete operation of the ATS by transferring the load’s power source from Source 1 to Source 2.

2)“Test Position”

This procedure is recommended for Preventive Maintenance (PM) of ATS without interrupting the Load thru the BYPASS/ISOLATION SWITCH.

NOTE: A periodic test of the transfer switch under load conditions is recommended to insure proper operation. (See National Electric Code articles 700 and 701).

WARNING

When performing a hi-pot or dielectric test on the power section, DISCONNECT the control panel plugs from the microprocessor to avoid potential damage.

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Entelli-Switch 250 Operation and Maintenance Manual (71R-2000)

GE Zenith Controls ■

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Contents GE Zenith Controls Introduction Authorized ServiceTable of Contents Final Equipment Inspection Safety / InstallationEquipment Inspection and Storage Initial Energization Installation cont’dEngine Start Control Connections Initial Energization cont’d R E T E S TInstallation cont’d Entelli-Switch 250 Controller Entelli-Switch 250 ControllerEntelli-Switch 250 Controller cont’d LCD & KeypadUser Setting for Voltage & Frequency Accessory Group Packages Stds Exes Cons Sens Spes PsgsCalibrate Accessory DefinitionsA62 Accessory Definitions cont’d Approximate out of phase degrees S12PS13P S14How to Set the System Clock Press More and scroll to SET System Clock using the More keyCDT One Event Timer Exerciser Press Exer Cancl Press Start Timer TestPress Bypass Exer Press Cancl BpassCDP Clock Exerciser Load / No-Load Clock ExerciserEntelli-Switch 250 User Setup CFG Menu Turn options on or OFF via keypad through the CFG menuEntelli-Switch 250 User Setup SET Menu Change adjustable values through the SET menuEntelli-Switch 250 User Setup System Info View System DataTesting IntroductionTest Options Auto PositionTesting cont’d ATS TestingDelayed Transition Standard TransitionRe-Transfer with Closed Transition Closed TransitionInitiating a Closed Transition Test Location Emergency Service Procedure for Extended Parallel TimeAuto Location Sequence of Operation ATS TypeSequence of Operation cont’d Amp Molded Power Section Transformer Usage see Figure Relay/Transformer R/T BoxDelayed / Closed Transition Relay/Transformer R/T Box cont’dStandard Transition R/T Box Schematic Delayed / Closed Transition R/T Box SchematicTroubleshooting and Diagnostics General TroubleshootingMaintenance and Testing Inspection and CleaningTesting ServicingPage GE Zenith Controls
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