Eaton NTCEC2X20400WRU Manuals

IB01602046E For more information visit: www.eaton.com O & M Manual for 2-Position Contactor Based Non-Automatic Transfer Switch Instruction Booklet     Description Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Receiving, Handling, and Storage . . . . . . . . . . . . . . . . . . . 6 Equipment Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Installation and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Testing and Problem Solving . . . . . . . . . . . . . . . . . . . . . . .17 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Renewal Parts Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Non-Automatic Transfer Switch Quick Start Instructions . . .20 For more information visit: www.eaton.com IB01602046E Instruction Booklet Page 2 Effective: July 2010 2-Position Contactor Based Non-Automatic Transfer Switch READ AND UNDERSTAND THE INSTRUCTIONS CONTAINED HEREIN- AFTER BEFORE ATTEMPTING TO UNPACK, ASSEMBLE, OPERATE, OR MAINTAIN THIS EQUIPMENT. HAZARDOUS VOLTAGES ARE PRESENT INSIDE TRANSFER SWITCH ENCLOSURES THAT CAN CAUSE DEATH OR SEVERE PERSONAL INJURY. FOLLOW PROPER INSTALLATION, OPERATION, AND MAIN- TENANCE PROCEDURES TO AVOID THESE VOLTAGES. TRANSFER SWITCH EQUIPMENT COVERED BY THIS INSTRUCTION BOOK IS DESIGNED AND TESTED TO OPERATE WITHIN ITS NAME- PLATE RATINGS. OPERATION OUTSIDE OF THESE RATINGS MAY CAUSE THE EQUIPMENT TO FAIL RESULTING IN DEATH, SERIOUS BODILY INJURY, AND/OR PROPERTY DAMAGE. ALL RESPONSIBLE PERSONNEL SHOULD LOCATE THE DOOR MOUNTED EQUIPMENT NAMEPLATE AND BE FAMILIAR WITH THE INFORMATION PROVIDED ON THE NAMEPLATE. A TYPICAL EQUIPMENT NAMEPLATE IS SHOWN IN FIGURE 1. Figure 1. Typical Non-Automatic Transfer Switch Equipment Nameplate. All possible contingencies that may arise during installation, oper- ation, or maintenance, and all details and variations of this equip- ment do no purport to be covered by these instructions. If further information is desired by the purchaser regarding a particular installation, operation, or maintenance of particular equipment, please contact an authorized Eaton Sales Representative or the installing contractor. Section 1: Introduction 1.1 Preliminary Comments and Safety Precautions This technical document is intended to cover most aspects asso- ciated with the installation, application, operation, and mainte- nance of the contactor based 2-position non-automatic transfer switch with ratings from 40 through 400 amperes (A). It is pro- vided as a guide for authorized and qualified personnel only. Please refer to the specific WARNING and CAUTION in Section 1.1.2 before proceeding. If further information is required by the purchaser regarding a particular installation, application, or main- tenance activity, please contact an authorized Eaton sales repre- sentative or the installing contractor. 1.1.1 Warranty and Liability Information No warranties, expressed or implied, including warranties of fit- ness for a particular purpose of merchantability, or warranties arising from course of dealing or usage of trade, are made regard- ing the information, recommendations and descriptions contained herein. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or otherwise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capi- tal, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information and descrip- tions contained herein. 1.1.2 Safety Precautions All safety codes, safety standards, and/or regulations must be strictly observed in the installation, operation, and maintenance of this device. THE WARNINGS AND CAUTIONS INCLUDED AS PART OF THE PRO- CEDURAL STEPS IN THIS DOCUMENT ARE FOR PERSONAL SAFETY AND PROTECTION OF EQUIPMENT FROM DAMAGE. AN EXAMPLE OF A TYPICAL WARNING LABEL HEADING IS SHOWN ABOVE TO FAMILIARIZE PERSONNEL WITH THE STYLE OF PRESENTATION. THIS WILL HELP TO INSURE THAT PERSONNEL ARE ALERT TO WARNINGS, WHICH APPEAR THROUGHOUT THE DOCUMENT. IN ADDITION, WARNINGS AND CAUTIONS ARE ALL UPPER CASE AND BOLDFACE. COMPLETELY READ AND UNDERSTAND THE MATERIAL PRESENTED IN THIS DOCUMENT BEFORE ATTEMPTING INSTALLATION, OPERA- TION, OR APPLICATION OF THE EQUIPMENT. IN ADDITION, ONLY QUALIFIED PERSONS SHOULD BE PERMITTED TO PERFORM ANY WORK ASSOCIATED WITH THIS EQUIPMENT. ANY WIRING INSTRUCTIONS PRESENTED IN THIS DOCUMENT MUST BE FOL- LOWED PRECISELY. FAILURE TO DO SO COULD CAUSE PERMANENT EQUIPMENT DAMAGE. WARNING Cat No: NTCEC2X20400WRU Style No: ASSEMBLED IN MEXICO WITH U.S. COMPONENTS 30 - 43465 ITEM: 001 PIECE: 001 CS#: 123456 J050412234 Volts: 240 Poles: 2 Amps: 400 Phase: 1 Hertz: 60 Wire: 3 GO No: ABC0123 OF: 001 WARNING CAUTION IB01602046E For more information visit: www.eaton.com Instruction Booklet Effective: July 2010 Page 3 2-Position Contactor Based  Non-Automatic Transfer Switch 1.2 General Information Transfer switches are used to protect critical electrical loads against loss of power. The load’s Source 1 power source is backed up by a Source 2 power source. A transfer switch is connected to both the Source 1 and Source 2 power sources and supplies the load with power from one of the two sources. In the event that power is lost from Source 1, the transfer switch trans- fers the load to the Source 2 power source. This transfer is non- automatic (electrically operated). Once Source 1 power is restored, the transfer back to the Source 1 power source is non- automatic (electrically operated). See Figure 2. Figure 2. Typical Load Transfer Switch Schematic (Contactor Type). In the event the Source 1 power source fails, non-automatic transfer switch will remain connected to the Source 1 power source. When Source 2 power source with sufficient voltage and frequency appears, transfer switch can be transferred to Source 2 non-automatically (electrical operation). Conversely, if con- nected to Source 2 and Source 2 power source fails, non-auto- matic transfer switch will remain connected to the Source 2 power source. When Source 1 power source with sufficient volt- age and frequency appears, transfer switch can be transferred to Source 1 non-automatically (electrical operation). Non-automatic transfer switches perform the transfer function and include three basic elements: 1. A power contactor to connect and disconnect the load to and from either power source. 2. Solenoids to make the transfer of the main contacts from source to source. 3. Supervisory circuits constantly monitor sources available and source to which the transfer switch is connected.. 1.2.1 Design Configuration The Eaton contactor based non-automatic transfer switch is a compact design that uses a power contactor to transfer essential loads from one power source to another (Figure 3 [100A]). Figure 3. Typical Power Panel for a 100A Model. The Eaton contactor based non-automatic transfer switch is designed with easy installation and simplified maintenance in mind. Three main panels comprise the contactor based non- automatic transfer switch design: 1. Power panel; 2. Voltage selection and transformer panel (if required); and 3. Electromechanical logic panel. Source 1 Source 2 Load