GE Entelli-Switch 250 manual Accessory Definitions cont’d

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Accessory Definitions (cont’d)

M1

Single Phase Amp Meter

M2

Three Phase Amp Meter

M80

3000 Digital Power Monitor

M82

5200 Digital Power Meter

M83A

EPM 5300 Digital Power Meter with Modbus Port

M83B

EPM 5350 Digital Power Meter with Ethernet Port

M84

7430 Digital Power Meter , Wye or Delta

M85A

EPM 9450 Digital Power Meter, Ethernet

M85B

EPM 9450 Digital Power Meter with Internal 56K Mod.

M86A

EPM 9650 Digital Power Meter, Wye or Delta, RS232 or RS485

M86B

EPM 9650 Digital Power Meter, Wye or Delta, RS232 or RS485

N1

Running Time Meter, Door mount

N2

Operation Counter, Door Mount

P1

Time Delay Source 2 Start. Adjustable 0-10 seconds. Standard setting is 3 seconds.

Adjust via SET menu (see page 18)

P2

Time Delay S2 Start. Adjustable 1/6 to 300 seconds.

Q2

Remote Peak Shave or Area Protection Circuit. Energize Q2 to simulate Source 1 Line failure causing the Generator to start and transfer the load to Source 2. Should Emergency fail during this operation, Transfer Switch will retransfer back to Source 1.

Q3

Remote inhibit transfer to Source 2 circuit. Energize Q3 input to allow transfer to Source 2. To enable Q3 option, engage Q3 jumper.

Q7

Inhibit transfer to Source 1 circuit. Energize Q7 input to prevent transfer to Source 1.

R1-1/R1-3

Source 1 Over Voltage sensing for single and three phase systems.

Source 1 Over Voltage "Fail" Factory Default: 110%

This adjustment determines the maximum acceptable over voltage. Adjust via the SET menu. Range is 105% to 110% in 1% increments (see page 18).

Once exceeded, the P timer begins timing to signal the Generator to start.

Source 1 Over Voltage "Restore" Factory Default: 105%

This adjustment determines the minimum acceptable over Voltage threshold at which the Transfer Switch is allowed to automatically transfer to Source 1. Adjust via SET menu. Range is 103% to 108% in 1% increments. "Restore" must be a minimum of 2% below "Fail" setting (see page 18).

R15/R15D

Load Shed

Should Source 2 become overloaded, a signal

can be given to switch to the dead or Mid position.

R16

Phase Rotation Sensing

Can be turned on or off via CFG menu (see page 17). Factory Default is on.

This feature prevents Line Source to Line Source trans- fers from occurring between dissimilar phase sequences. This condition is primarily caused by an installation error. Connections from Source 1 and Source 2 need be verified, compared, and corrected to remedy the inconsistent phase rotation between the sources. WARNING: Turning off this feature can cause

severe damage to loads.

R26

Interruptable Power Rate Provisions.

Allow transfer out of Source 1 position to Source 2 or dead Source 2. Alarm and Pre-Signal circuit included.

R50

In Phase Monitor this feature restricts Live to Live Source Transfers to occur unless both Sources are within 7 electrical degrees or less of each other. (live Source to live Source transfers usually occur during transfer back to Source 1 or during Testing). R50 does not change the operation of the Automatic Transfer Switch in a power failure mode. After all timer functions have elapsed, the CHECKING FOR SOURCE SYNCHRO- NISM will be displayed as well as the direction of transfer (S1-S2 for example denotes transfer from Source 1 to Source2). When synchronism is accomplished, transfer will take place.

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

GE Zenith Controls ■

Page 11 Page 13
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Page 11 Page 13
Contents GE Zenith Controls Authorized Service Table of ContentsIntroduction Safety / Installation Equipment Inspection and StorageFinal Equipment Inspection Installation cont’d Engine Start Control ConnectionsInitial Energization 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 PsgsAccessory Definitions A62Calibrate 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 TransitionClosed Transition Initiating a Closed TransitionRe-Transfer with Closed Transition Emergency Service Procedure for Extended Parallel Time Auto LocationTest 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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