GE Entelli-Switch 250 manual User Setting for Voltage & Frequency

Page 9

User Setting for Voltage & Frequency

Standard 3-Phase Sensing on 3 and 4 Pole Units

Source 1

Under Voltage "Restore"

Factory Default: 90%

This adjustment determines the minimum acceptable voltage required to transfer to Source 1.

Adjust via the SET menu. Range is 85% to 100% in 1% increments (see page 18).

Once satisfied, the T timer will begin timing to transfer to Source 1.

Under Voltage "Fail"

Factory Default: 80%

This adjustment determines the low voltage threshold. Adjust via the SET menu. Range is 75% to 98% in 1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once voltage falls below threshold, P timer begins timing to signal Source 2 Generator to start.

Under Frequency "Restore"

Factory Default: 95%

This adjustment determines the minimum acceptable frequency required to transfer to Source 1.

Adjust via the SET menu. Range is 90% to 100% in 1% increments (see page 18).

Once satisfied, the T timer will begin timing to transfer to Source 1.

Under Frequency "Fail"

Factory Default: 90%

This adjustment determines the low frequency threshold. Adjust via the SET menu. Range is 88% to 98% in 1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once satisfied, the T timer will begin timing to transfer to Source 1.

Over Frequency "Restore"

Factory Default: 102%

This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re-transfer to Source 1.

Adjust via the SET menu. Range is 102% to 104% in 1% increments (see page 18). “Restore” must be a minimum of 1% below “Fail” setting.

Over Frequency "Fail"

Factory Default: 105%

This adjustment determines the maximum acceptable Over Frequency.

Adjust via the SET menu. Range is 103% to 105% in 1% increments (see page 18).Once exceeded, the P timer begins timing to signal the generator to start.

Source 2

Under Voltage "Restore"

Factory Default: 90%

This adjustment determines the minimum acceptable voltage required to transfer to Source 2.

Adjust via the SET menu. Range is 85% to 100% in 1% increments (see page 18).

Once satisfied, the W timer will begin timing to transfer to Source 2.

Under Voltage "Fail"

Factory Default: 80%

This adjustment determines the low voltage threshold. Adjust via the SET menu. Range is 75% to 98% in 1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once voltage falls below threshold, T timer will be bypassed to expedite the transfer to 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 exceed- ed, the T timer will be bypassed to expedite the transfer to 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 transfer to Source 2. Adjust via the SET menu. Range is 103% to 105% in 1% increments (see page 18). “Restore” must be a minimum of

2% below “Fail” setting.

Under Frequency "Restore"

Factory Default: 95%

This adjustment determines the minimum acceptable frequency required to transfer to Source 2.

Adjust via the SET menu. Range is 90% to 100% in 1% increments (see page 18).

Once satisfied, the W timer will begin timing to transfer to Source 2.

Under Frequency "Fail"

Factory Default: 90%

This adjustment determines the low frequency threshold. Adjust via the SET menu. Range is 88% to 98% in 1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once satisfied, the W timer will begin timing to transfer to Source 2.

Over Frequency "Fail"

Factory Default: 105%

This adjustment determines the maximum acceptable Over Frequency. Adjust via the SET menu. Range is 103% to 105% in 1% increments (see page 18). Once exceeded, the T timer will be bypassed to expedite the transfer to Source 1.

Over Frequency "Restore"

Factory Default: 102%

This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re-transfer to Source 2. Adjust via the SET menu. Range is 102% to 104% in 1% increments

(see page 18). “Restore” must be a minimum of 1% below “Fail” setting.

■ GE Zenith Controls

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

9 ■

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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 R E T E S T Initial Energization cont’dInstallation cont’d Entelli-Switch 250 Controller Entelli-Switch 250 ControllerLCD & Keypad Entelli-Switch 250 Controller cont’dUser Setting for Voltage & Frequency Stds Exes Cons Sens Spes Psgs Accessory Group PackagesAccessory Definitions A62Calibrate Accessory Definitions cont’d S12P Approximate out of phase degreesS13P S14Press More and scroll to SET System Clock using the More key How to Set the System ClockPress Exer Cancl Press Start Timer Test CDT One Event Timer ExerciserPress Bypass Exer Press Cancl BpassLoad / No-Load Clock Exerciser CDP Clock ExerciserTurn options on or OFF via keypad through the CFG menu Entelli-Switch 250 User Setup CFG MenuChange adjustable values through the SET menu Entelli-Switch 250 User Setup SET MenuView System Data Entelli-Switch 250 User Setup System InfoIntroduction TestingTest Options Auto PositionATS Testing Testing cont’dDelayed Transition Standard TransitionClosed Transition Initiating a Closed TransitionRe-Transfer with Closed Transition Emergency Service Procedure for Extended Parallel Time Auto LocationTest Location ATS Type Sequence of OperationSequence of Operation cont’d Relay/Transformer R/T Box Amp Molded Power Section Transformer Usage see FigureRelay/Transformer R/T Box cont’d Delayed / Closed TransitionDelayed / Closed Transition R/T Box Schematic Standard Transition R/T Box SchematicGeneral Troubleshooting Troubleshooting and DiagnosticsInspection and Cleaning Maintenance and TestingTesting ServicingPage GE Zenith Controls
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