e GE Zenith Controls ZTX Series Automatic Transfer Switches 40-400 Amps 72 R -10 0 0 9/05 Operation and Maintenance Manual
Authorized Service For GE parts and service, call: 773 299-6600 Table of Contents Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1ii Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Equipment Inspection and Storage . . . . . . . . .11 Final Equipment Inspection . . . . . . . . . . . . . . .11 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Power Connections . . . . . . . . . . . . . . . . . . . . . .
Installation DANGER HAZARDOUS VOLTAGE (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 GE Zenith’s focus. The proper storage, installation, operation and maintenance will help increase the life of the switch.
Installation (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Connect the Normal, Emergency, and Load conductors to the clearly marked terminals on the transfer switch. Remove surface oxides from cables by cleaning with a wire brush. Verify that all connections are correct before tightening the lugs.
Installation (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Control Connections Note: N = Utility Position E = Generator Position Connecting Engine Start may cause Generator to start. Before connecting, turn Generator OFF. With the Generator breaker open and the Generator control switch off, install the Generator start connections.
Installation (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. ATTENTION! This applies only to the switches with the RM4-CAT exerciser option: Only after ATS installation, connect a commercial-grade alkaline 9V battery to the MX60 controller via the harness connected to the controller. The battery should be placed in the holder installed just above the controller.
Installation (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Functional Test Functional testing of the automatic transfer switch (ATS) is described in this section. Before proceeding, read and understand all instructions and review the operation of all accessories provided. To begin the test, close the Utility source circuit breaker.
Installation (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. System Voltage Settings Voltage / Frequency Selection Jumper Settings ZTX controller boards are preconfigured to the system voltages specified at the time of order.
Control Interface DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Indicator LEDs A S1 (Utility) Available Green LED. When on, indicates source is acceptable. B S1 (Utility) Position Green LED. When on, indicates ATS is connected to Utility C S2 (Generator) Available Red LED. When on, indicates source is acceptable. D S2 (Generator) Position Red LED.
Control Interface (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Using the Keypad Controls TEST KEY TIMER BYPASS The TEST KEY initiates a transfer sequence to S2 and holds the ATS in that mode until either the CANCEL key is pressed or, a situation arises to cause the ATS to go back to S1(ie, S2 actually fails).
Control Interface (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Automatic Generator Exerciser The ZTX automatic generator Exerciser can perform a pre-scheduled repeating test of the generator and/or the ATS mechanism depending on which jumpers are selected on the controller board. Additionally, the ATS can be preset to perform the exercise every 7, 14, 21 or 28 days.
Control Interface (cont’d) DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. In-Phase Monitor ZTX ATS senses when the sources are as far out as 2 Hz or as close as .01Hz in frequency differential of each other and transfers the load to and from either source in-phase.
Example Systems Partial Coverage System Loads Figure 9 Transfer Switch Utility Source Circuit Breaker Generator Source Utility Panel Loads Distribution Panel Total Coverage System Figure 10 Transfer Switch Utility Source Circuit Breaker Circuit Breaker Generator Source Main Breaker Panel All Loads ■ GE Zenith Controls ZTX Operation and Maintenance Manual (72R-1000) 11 ■
Typical Diagrams Power Circuit Schematic 40-240 Amps Figure 11 Power Panel Layout Interconnect Plug 5 1 CCN SN SCOM SE E2 N1 N2 CCE E1 10 6 OPTIONAL 3 4 2 Figure 12 ■ 12 ZTX Operation and Maintenance Manual (72R-1000) N2 E3 N3 E2 3 1 Figure 13 GE Zenith Controls ■
Replacement Parts Standard Transition — 40 to 200 Amps BR SN A4 CN/CE SP+L SE A3 SCN/SCE Figure 14 TAG CN/CE DESCRIPTION Solenoid Solenoid Plunger and Link VOLTAGE 120 208 220 240 380/416 440/480 ALL 40 TO 200 AMPS K-2207 K-2208 K-2208 K-2228 K-2212 K-2209 57P-1030 SCN/SCE Coil Cutout Switch 120-480V L-3078 SCN/SCE Coil Cutout Switch 600V L-4027 Rectifier ALL PS-5076 BR A3/A4 Auxiliary Contacts L-3078 Table 7 ■ GE Zenith Controls ZTX Operation and Maintenance Manual (72R-1000)
Replacement Parts (cont’d) Standard Transition - 225 to 400 Amps BR T1 T2 T3 TN N1 N2 N3 NN CN/CE SN A4 SE A3 E1 E2 E3 EN Figure 15 Tag N 1,2,3 N E 1,2,3 N T 1,2,3 N Recommended as Spares Description Cable Connection Lug Wire Size Stock Numbers by Amperage 225, 250* 260, 300* 400 S-2701 S-2701 S-2701 #6-250 MCM #4-600 MCM #4-600 MCM Coil Volts CN/CE Solenoid SN/SE Position Sense Limit Switch A3/A4 Auxiliary Contacts BR Rectifier * 208/220/240 K-2246B L-3078 * PS-5076
Troubleshooting DANGER HAZARDOUS VOLTAGE (Can Cause Severe Injury or Death) Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components. Service must be performed by qualified personnel.
g GE Zenith Controls A Product of GE Consumer & Industrial General Electric Company 830 West 40 th Street, Chicago, IL 60609 USA 773 299-6600, Fax: 773 247-7805 www.geelectrical.
