Related Manuals for ABB Zenith ZTSCT Series
Summary of Contents for ABB Zenith ZTSCT Series
- Page 1 — O P E R A T I O N A N D M A I N T E N A N C E M A N U A L Zenith ZTSCT and ZBTSCT series Closed Transition and Bypass Isolation Closed Transition Automatic Transfer Switches, 100-4000 A...
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Page 2: Table Of Contents
Introduction ABB Zenith Transfer Switches are used to provide a continuous source of power for lighting and other critical loads by automatically transferring from Source 1 power to Source 2 power in the event that source 1 voltage falls below preset limits. -
Page 3: Safety
(Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. The safe operation of your switch is ABB Zenith’s focus. Check engine start connections. The proper storage, installation, operation and maintenance Verify the correct connection of all control wires. -
Page 4: Installation
Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Power Connections SPREADER BAR ABB Zenith transfer switches are supplied with UL listed 45° solderless screw type terminals as standard for the Source 1, Source 2 and Load power connections. -
Page 5: Initial Energization
10. Shut down the generator’s engine. 11. Place the starting control in the Automatic position. 12. Complete the visual inspection of the transfer switch. 13. Close the enclosure. 14. Lock the enclosure. Figure 3 (Typical) ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... - Page 6 Open the enclosure. Place the Disconnect Switch in the Inhibit. This step is only performed if the NOTE “DS” Option was purchased. ABB Zenith Close the external (up-stream) Source 1 circuit breaker. NOTES : Source 1 Available and Source 1...
- Page 7 The engine start control wires connect to the engine start start control wires. relay terminals located to the left of the microprocessor. Figure 6 shows the location of these terminals. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith...
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Page 8: Entelli-Switch 250 Microprocessor Controller
S 1 O K 2 1 : 5 6 M O N 2 3 A P R 2 0 0 8 M O R E T E S T Figure 8 ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 9: Lcd & Keypad
Figure 9 ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 10: User Setting For Voltage & Frequency
SET menu. Range is 85% to 100% in 1% increments “Restore” must be a minimum of 1% below “Fail” setting. (see page 17). Once satisfied, the W timer will begin timing to transfer to Source 2. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 11: Accessory Group Packages
Optional Accessory. Can not be used with accessory having the same symbol. Denotes an Accessory with 2 circuits as a standard. Optional for 40-400 Amp Denotes an Accessory with 3 circuits as a standard. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 12: Accessory Definitions
L4 Indicates Source 2 available. start Generator and run under load. Can be configured by end user for 1, 7, 14, 28, 365 day cycle. (See page 16) ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... - Page 13 Transfer Switch will retransfer back to Source 1. Remote inhibit transfer to Source 2 circuit. Energize Q3 input to allow transfer to Source 2. To enable Q3 option, engage Q3 jumper. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith...
- Page 14 Source 2 fails. 5 minutes. Adjust via SET menu (see page 18) In “Manual”, retransfer to Source 1 is upon depression of BYPASS DELAY button YEN or if Source 2 fails. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith...
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Page 15: How To Set The System Clock
8. Press SAVE (this will enter this value and move cursor to minutes). 9. Use the up and down keys to change the minutes. 10. Press SAVE (this will enter this value and move cursor to month). ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 16: Cdt One Event Timer Exerciser
From S1 screen (ATS in S2 position)= CDT (Exerciser) 1) Press TEST timing period +T (S1 stable Timer) timing period. 2) Press MORE 3) Press START TEST TIMER (to initiate Test). ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 17: Cdp Clock Exerciser
28-DAY and 365-DAY Exerciser Use to change values. (24 Hour System) To save value and to Figure 10 To previous field move cursor to next or to exit screen. field to be changed. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 18: User Setup - Cfg Menu
PROG 1 J2/J4 PROG 2 Inputs GRD (Input Sink) LS OUT Controller Outputs have Limited Source Capacity. NIA OUT Use only ABB Zenith-specified Output Modules. ELEV. PRE. OUT ALARM OUT STE OUT MOTOR DISC. OUT Output Contacts TMS IN INHIB.>S1 INHIB.>S2... -
Page 19: User Setup - Set Menu
PROG 1 J2/J4 PROG 2 Inputs GRD (Input Sink) LS OUT Controller Outputs have Limited Source Capacity. NIA OUT Use only ABB Zenith-specified Output Modules. ELEV. PRE. OUT ALARM OUT STE OUT MOTOR DISC. OUT Output Contacts TMS IN INHIB.>S1 INHIB.>S2... -
Page 20: User Setup - System Info
PROG 1 J2/J4 PROG 2 Inputs GRD (Input Sink) LS OUT Controller Outputs have Limited Source Capacity. NIA OUT Use only ABB Zenith-specified Output Modules. ELEV. PRE. OUT ALARM OUT STE OUT MOTOR DISC. OUT Output Contacts TMS IN INHIB.>S1 INHIB.>S2... -
Page 21: Introduction
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 pre- set cool down period. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 22: Ats Testing
Upon completion of the (U) timing cycle, the controller sends an Engine stop signal. To test lamps, press TEST then scroll through MORE, then press LAMP TEST. To cancel LAMP TEST press MORE. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 23: Closed Transition
A periodic test of the transfer switch under load conditions is recommended to insure proper operation. (See National Electric Code articles 700 and 701) Closed Transition ABB Zenith Closed Transition Transfer Switches are designed If while in Closed Transition Mode, the ATS fails to open to Transfer the Load between two available sources without the source it is attempting to “transfer out of ”... -
Page 24: Emergency Service Procedure For Extended Parallel Time
11)Re-connect the transfer switch to AUTO.* * As described in the following Sequence of Operation in this manual. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 25: Sequence Of Operation
S2 Stop Transition S2 Start S2 Stable Time to S2 S1 Stable Time to S1 Delay Source 1 Transfer to Source 2 Transfer to Source 1 Engine Source 1 Fails Cooldown Returns ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 26: Closed Transition
Sequence of Operation (cont’d) Closed Transition ABB Zenith Closed Transition Transfer Switches are designed A signal will be provided (STE) to Shunt Trip the Generator to Transfer the Load between two available sources with Circuit Breaker if the Transfer Switch remains closed into both Sources for more than 325 milliseconds. -
Page 27: Bypass-Isolation Operation
WARNING While the bypass switch is out of the AUTO position/mode, the ATS is INHIBITED from automatic operation. Make certain the ATS is left in automatic after completion of any service. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 28: 100-400 Amp
5. To operate Bypass Switch when ATS is in Test or Isolate, position MBH to available power source. Legend: 1. BP - Bypass switch (indicated by contacts BN/BE) is a three position switch. 2. ATS - Automatic Transfer Switch. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 29: 600-1200 Amp
Move MBH upward to close into selected power source. Legend: 1. BP - Bypass switch (indicated by contacts BN/BE) is a three position switch. 2. ATS - Automatic Transfer Switch. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 30: 1600-4000 Amp
Move MBH upward to close into selected power source. Legend: 1. BP - Bypass switch (indicated by contacts BN/BE) is a three position switch. 2. ATS - Automatic Transfer Switch. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 31: 1600-3000 Amp Horizontal Bypass
Move MBH upward to close into selected power source. Legend: 1. BP - Bypass switch (indicated by contacts BN/BE) is a three position switch. 2. ATS - Automatic Transfer Switch. ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... -
Page 32: Controls Power Supply (Cps)
Assembly Board at 50/60 Hz Part No. 120V 50P-1224 50P-1200 208-220V 50P-1225 50P-1201 230-240V 50P-1226 50P-1202 277V 50P-1227 50P-1203 380-400V 50P-1228 50P-1204 416-440V 50P-1229 50P-1205 460-480V 50P-1230 50P-1206 575-600V 50P-1231 50P-1207 ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith... - Page 33 C.V. SCR-E CONTROL VOLTAGE (SOURCE 2) C.V. SCR-N CONTROL VOLTAGE (SOURCE 1) COMMON SINGLE PHASE SOURCE 2 SENSING 3-PHASE SOURCE 1 SENSING SOURCE 1 CONTROL POWER SOURCE 2 CONTROL POWER Figure 18 ZTSCT / ZBTSCT Operation & Maintenance Manual ABB Zenith...
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Page 34: Troubleshooting & Diagnostics
Troubleshooting and Diagnostics DANGER HAZARDOUS VOLTAGES CAN CAUSE SEVERE INJURY OR DEATH. These charts may indicate problems that require authorized ABB Zenith service personnel. Hazardous voltages may exist on termination plugs other than those that go into the Entelli-Switch 250. General Troubleshooting... -
Page 35: Maintenance And Testing
Electric Code articles 700 and 701). Servicing WARNING All worn or inoperative parts must be replaced using ABB Zenith recommended replacement parts. Please refer to When performing a hi-pot or dielectric test the Replacement Parts manual for specific part information on the power section, DISCONNECT the and ordering procedures. - Page 36 Commitment to the Customer All team members at ABB are aware of the critical situations in which our products are called upon to perform. With that understanding comes an obligation beyond merely fulfilling an order or turning out a product.