GE ZTSCT Relay/Transformer (R/T Box)

C.V. SCR-N CONTROL VOLTAGE (SOURCE 1)

C.V. SCR-E CONTROL VOLTAGE (SOURCE 2)

C.V. SCR-EO CONTROL VOLTAGE (OPEN SOURCE 2)

C.V. SCR-NO CONTROL VOLTAGE (OPEN SOURCE 1)

SCR-NO

908

C.V. SCR-E

C.V.

901

908

808

SCR-EO

C.V.

JC 801

SCR-N

C.V. GND

907

903

902

801

901

807

804

803

904

905

906

805

806

GROUND

COMMON

24V 10V 11V 10V24V 10V 11V 10V

XN1 XN2

20 21 22

XN1 -

XN2 -

XE1 -

XE2 -

SOURCE 1 CONTROL TRANSFORMER

SOURCE 1 3 PHASE SENSING

TRANSFORMER

SOURCE 2 CONTROL TRANSFORMER

SOURCE 2 3 PHASE SENSING

TRANSFORMER

SINGLE PHASE SOURCE 2 SENSING

3-PHASE SOURCE 1 SENSING

SOURCE 1 CONTROL POWER

SOURCE 2 CONTROL POWER

800

902

804

803

805

806

804

807

900

902

904

903

905

906

904

907

800

900 SOURCE 2 24V OUTPUT

SOURCE 1 24V OUTPUT

(18)

(1)

908

808

XE1

XE2

31 32

3-PHASE SOURCE 2 SENSING

30 GE Zenith Controls ■

ZTSCT / ZBTSCT Operation and Maintenance Manual (71R-5000A)

Relay/Transformer (R/T Box) (cont’d)

Figure 16

Closed Transition CPS Schematic

Contents

Main Table of Contents Page Authorized Service For GE parts and service, call: 773 299-6600 Introduction Safety Mounting Equipment Inspection and Storage Final Equipment Inspection Installation Power Connections Engine Start Power Connections: Screw Type Terminals for External Power Connections GE Zenith Controls E CAUTIONS Initial Energization Page Entelli-Switch 250 Controller Entelli-Switch 250 Controller Entelli-Switch 250 Controller LCD & Keypad * E * Entelli-Switch 250 S1 OK 01: 50 FRI 31 MAY 2003 User Setting for Voltage & Frequency Standard 3-Phase Sensing on 3 and 4 Pole Units Source 1 Source 2 Accessory Group Packages ** Accessory Definitions Page R50 S5P S12P S13P S14 How to Set the System Clock How to Set the System Clock Set System Clock, time and date Setting the System Clock CDT One Event Timer Exerciser Load / No-Load How to CONFIGURE (CFG) and Set (SET) the Timer Exerciser Set (SET) the Exerciser: How to Initiate CDT Exerciser and to start an exercise cycle every 1, 7, 14, or 28 days CDP Clock Exerciser Load / No-Load Clock Exerciser How to Configure (CFG) the Exerciser How to set (SET) the DAILY Exerciser How to Bypass (Cancel) an exercise during an exercise cycle Entelli-Switch 250 User Setup - CFG Menu TM Turn options ON or OFF via keypad through the CFG menu 1 Engine Start Relay (De-Energized) Entelli-Switch 250 User Setup - SET Menu TM Change adjustable values through the SET menu. 1 Engine Start Relay (De-Energized) Entelli-Switch 250 User Setup - System Info TM View System Data 1 Engine Start Relay (De-Energized) Testing Introduction Test Options ATS Testing Open Transition NOTICE Emergency Service Procedure for Extended Parallel Time ZTSCT Transfer Switch ZBTSCT Transfer/Bypass Switch Sequence of Operation Open Transition Timer Designations as they appear in the SET menu Page Bypass-Isolation Operation 100-400 AMP 600-1200 AMP 1600-4000 AMP Controls Power Supply (CPS) 30 GE Zenith Controls Relay/Transformer (R/T Box) Closed Transition CPS Schematic Figure 16 Troubleshooting and Diagnostics Table 4 Symptom Annunciation Possible Cause(s) Corrective Action General Troubleshooting NOTE: When you use the troubleshooting charts, Maintenance and Testing Inspection and Cleaning Servicing Testing Page GE Zenith Controls