Page 2 - Table of Contents
Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Equipment Inspection and Storage . . . . . . . . 1 3 Final Equipment Inspection . . . . . . . . . . . . . . 1 3 Installation . . . . . . ...
Page 3 - Safety / Installation; DA N G E R; HAZARDOUS VOLTAGE; C AU T I O N; W A R N I N G
■ GE Zenith Controls 3 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Each GE Zenith transfer switch is factory wired and tested. A complete information package is furnishedwith each switch which includes: a. Sequence of operation. b. Description and operation of all accessories ...
Page 4 - Installation; Initial Energization; C AU T I O N S; GE Zenith Controls
■ 4 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Installation (cont’d) Engine Start Control Connections The engine-start terminals are clearly identified by alabel on the microcontroller backplate. In the case ofmanual transfer switches, or in other applicati...
Page 6 - Control Connections
■ 6 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Installation (cont’d) A complete information package is furnished witheach transfer switch including a complete connectiondiagram and schematic which details all necessarycontrol circuit field connections. The ...
Page 7 - Entelli-Switch 250 Controller; Microprocessor
Entelli-Switch 250 ■ GE Zenith Controls 7 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Entelli-Switch 250 Controller Entelli-Switch 250 Controller Consists of two major assemblies: I. The Microprocessor contains the following: A. Entelli-Switch 250 Board - Customer Inputand Out...
Page 8 - S 1 O K; M O R E C F G T E S T S E T
■ 8 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Entelli-Switch 250 Controller (cont’d) Figure 8 LCD & Keypad These options are accessible through the LCD andkeypad (see figure below). To become familiar with theoptions loaded into a particular unit, scro...
Page 9 - User Setting for Voltage & Frequency; Source 1
■ GE Zenith Controls 9 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) User Setting for Voltage & Frequency Standard 3-Phase Sensingon 3 and 4 Pole Units Source 1 Under Voltage "Restore"Factory Default: 90%This adjustment determines the minimum acceptablevoltage requir...
Page 10 - Accessory Group Packages; Accessories
■ 10 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Accessory Group Packages Accessories 6PA1A1EA3A4CalibrateCDTCDP**DS*DT*DWEEL/PK/PL1L2L3L4*LNP1Q2Q3Q7R1-1R1-3R15*R15DR16R50S5PS12PS13PTT3/W3UUMDVIWYEN STDS EXES CONS SENS SPES PSGS 2 2 2 2 2 2 2 2 3 3 2 2 2 2 2...
Page 11 - Accessory Definitions; LNP
■ GE Zenith Controls 11 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Accessory Definitions 6P Test Switch, Momentary 6A Test Switch, Maintained Auto/Momentary Test 6AP Test Switch, Maintained/Momentary utilizing keypad 6B Test Switch, Maintained - Auto / Momentary - Test, Key O...
Page 13 - - If S2 Frequency is greater than S1 Frequency,; UMD
■ GE Zenith Controls 13 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Accessory Definitions (cont’d) Notes: - If S2 Frequency is less than S1 Frequency, display will show a series of (- - - - -…..) symbols. - If S2 Frequency is greater than S1 Frequency, display will show a seri...
Page 14 - How to Set the System Clock; Set System Clock, time and date; Press SAVE (This will enter this value and complete; YEN
■ 14 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) How to Set the System Clock How to Set the System Clock Set System Clock, time and date · If the clock is not set, the display will show SET SYSTEM CLOCK on the second line of the S1 OK screen. · The S1 OK scr...
Page 15 - EXERCISER; How to initiate a new exercise start time; CDT One Event Timer Exerciser
■ GE Zenith Controls 15 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Load or No-Load One event Exerciser with adjustable Timer. Exerciseduration can be set between 5 and 60 minutes in1 minute increments. Can be configured to run every1,7,14, or 28 days. Factory default is 20 mi...
Page 16 - CDP Clock Exerciser; How to check the next exercise event
■ 16 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) S E T E X E R C I S E R 0 0 : 0 0 To save value and to move cursor to next field to be changed. Indicates # ofExercise Periods B A C K ^ v S AV E Indicates type of Exerciser DAILY, WEEKLY, 14-DAY, 28-DAY or 36...
Page 17 - Enter six digit access code
■ GE Zenith Controls 17 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Entelli-Switch 250 User Setup - CFG Menu —TIMER EXERCISER (CDT) 1, 7, 14, 28 Day (pg. 11 & 15) —CLOCK EXERCISER LOAD OR NO LOAD (CDP) 1, 7, 14, 28, 365 Day (pg. 11 & 16) —TEST KEY (6) Maintained/Moment...
Page 19 - Entelli-Switch 250 User Setup - System Info; View System Data
■ GE Zenith Controls 19 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Entelli-Switch 250 User Setup - System Info —PHASE TO PHASE VOLTAGE, S1 & S2 —FREQUENCY INDICATION FOR S1 & S2 (K/P) (pg.11) —PLANT EXERCISER: Next Impending Exerciser (shows only if set) —SYSTEM INFO:...
Page 20 - Testing; Introduction; Test Options
■ 20 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Testing Introduction A manual operator handle is provided with thetransfer switch for maintenance purposes only. Manualoperation of the switch must be checked before it isoperated electrically. Both power sour...
Page 21 - N OT I C E; ATS Testing; Standard Transition; Restoration of Source 1 Power:; Delayed Transition; Source 1 Power Failure:
■ GE Zenith Controls 21 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Entelli-Switch 250 Testing (cont’d) N OT I C E A periodic test of the transfer switch under load conditions is recommended to insure proper operation. (See National Electric Code articles 700 and 701) ATS Test...
Page 22 - Closed Transition
■ 22 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Testing (cont’d) N OT I C E 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 GE Zenith...
Page 23 - ZTSCT Transfer Switch
■ GE Zenith Controls 23 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Testing (cont’d) Emergency Service Procedure for Extended Parallel Time ZTSCT Transfer Switch If Source 2 breaker shunt trip was triggered after an extended parallel time (malfunction) occurred. Follow these s...
Page 24 - Sequence of Operation; Timer Designations as they appear in the SET menu; ATS Type
■ 24 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Sequence of Operation Standard Transition Source 1 Power Failure: When Source 1 voltage or frequency has fallen belowthe preset "Fail" values, the controller initiates the TimeDelay Source 2 Start Time...
Page 26 - Transformer Usage; Bill of Material; Bill of Material
■ 26 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Standard Transition Each MX250 microprocessor based ATS controllerrequires a relay/transformer box to apply line voltage tothe ATS operator via coil control relays. Also required ispower for the MX150 printed ...
Page 27 - Delayed / Closed Transition
■ GE Zenith Controls 27 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Delayed / Closed Transition Relay/Transformer (R/T Box) (cont’d) R/T Box Primary 1 VA 25 VA Assembly Voltage XFMR XFMR Part No. at 50/60 Hz Part No. Part No. 50P-1034 120V K-3216 K-3224 50P-1035 208-220V K-321...
Page 28 - Standard Transition R/T Box Schematic
■ 28 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Relay/Transformer (R/T Box) (cont’d) 20 21 22 31 30 GND 903 902 801 901 807 804 803 904 905 906 805 806 (BLANK)(BLANK)GROUNDCCE - COIL CONTROL RELAY (SOURCE 2)CCN - COIL CONTROL RELAY (SOURCE 1)COMMON J5 24V 1...
Page 29 - Troubleshooting and Diagnostics; Symptom; General Troubleshooting
■ GE Zenith Controls 29 ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Troubleshooting and Diagnostics HAZARDOUS VOLTAGES CAN CAUSE SEVERE INJURY OR DEATH. These charts may indicate problems that require authorized GE Zenith service personnel. Hazardous voltages may exist on term...
Page 30 - Maintenance and Testing; Inspection and Cleaning; Insert the handle and operate the
■ 30 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71 R -2000) Maintenance and Testing A preventive maintenance program will insure highreliability and long life for the transfer switch. Thepreventive maintenance program for the transferswitch should include the following...
Page 32 - USA
A Product of GE Industrial Systems General Electric Company 830 West 40 th Street, Chicago, IL 60609 USA 773 299-6600 , Fax: 773 247-7805 www.geindustrial.com g GE Zenith Controls
