1 O & M Manual for the EATON ATC-300 . Automatic transfer switch controller Instruction Booklet New Information Description Page Introduction .. 2. Hardware Description .. 7. Status Monitoring and Setpoints .. 11. Typical Function of the ATC-300 controller .. 13. Operation .. 15. Programming .. 19. Troubleshooting and Maintenance .. 23. Appendix A: Display Messages for Status and Timers .. 25. Appendix B: Operational Flowcharts .. 26. Appendix C: Display Menu Tree .. 29. Appendix D: Pickup / Dropout Tables .. 35. IB01602009E For more information visit: Instruction Booklet Page 2 Effective: April 2006. ATC- 300 automatic transfer switch controller CAUTION CAUTION. THE ATC-300 controller IS FACTORY PROGRAMMED FOR A SPE- COMPLETELY READ AND UNDERSTAND THE MATERIAL PRESENTED. CIFIC Automatic transfer switch .
2 DO NOT ATTEMPT TO IN THIS DOCUMENT BEFORE ATTEMPTING INSTALLATION, OPERA- INTERCHANGE ATC-300 CONTROL DEVICES WITHOUT CONSULTING TION, OR APPLICATION OF THE EQUIPMENT. IN ADDITION, ONLY. EATON ELECTRICAL. QUALIFIED PERSONS SHOULD BE PERMITTED TO PERFORM ANY. WORK ASSOCIATED WITH THIS EQUIPMENT. ANY WIRING. All possible contingencies that may arise during installation, oper- INSTRUCTIONS PRESENTED IN THIS DOCUMENT MUST BE FOL- ation, or maintenance, and all details and variations of this equip- LOWED PRECISELY. FAILURE TO DO SO COULD CAUSE PERMANENT. ment do no purport to be covered by these instructions. If further EQUIPMENT DAMAGE. information is desired by the purchaser regarding a particular installation, operation, or maintenance of particular equipment, Background please contact an authorized EATON Sales Representative or the transfer switches are used to protect critical electrical loads installing contractor.
3 Against loss of power. The load's Source 1 power source is backed up by a Source 2 power source. A transfer switch is con- nected to both the Source 1 and Source 2 power sources and Section 1: Introduction 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- Preliminary Comments and Safety Precautions fers the load to the Source 2 power source. This transfer can be This technical document is intended to cover most aspects asso- Automatic or Manual , depending upon the type of transfer switch ciated with the installation, application, operation, and mainte- equipment being used. Once Source 1 power is restored, the nance of the Automatic transfer controller (ATC)-300 controller . load is automatically or manually transferred back to the Source 1.
4 It is provided as a guide for authorized and qualified personnel power source, again depending upon the type of transfer equip- only in the selection and application of the ATC-300 controller . ment being used. Please refer to the specific WARNING and CAUTION in Section In Automatic transfer switch (ATS) equipment, the switch 's intel- before proceeding. If further information is required by the ligence system initiates the transfer when the Source 1 power purchaser regarding a particular installation, application, or main- falls below or rises above a preset voltage or frequency. If the tenance activity, please contact an authorized EATON sales rep- Source 2 power source is a standby generator, the ATS initiates resentative or the installing contractor. generator start up then transfers to the Source 2 power source Warranty and Liability Information when sufficient generator voltage is available.
5 When Source 1. power is restored, the ATS automatically transfers back to the No warranties, expressed or implied, including warranties of fit- Source 1 power source and initiates generator engine shutdown. ness for a particular purpose of merchantability, or warranties arising from course of dealing or usage of trade, are made regard- An ATS consist of three basic elements: ing the information, recommendations and descriptions contained herein. In no event will EATON be responsible to the purchaser or 1. Main contacts to connect and disconnect the load to and user in contract, in tort (including negligence), strict liability or from the power sources. otherwise for any special, indirect, incidental or consequential 2. A mechanism to transfer the main contacts from source to damage or loss whatsoever, including but not limited to damage source.
6 Or loss of use of equipment, plant or power system, cost of capi- tal, loss of power, additional expenses in the use of existing 3. Intelligence/supervisory circuits to constantly monitor the power facilities, or claims against the purchaser or user by its condition of the power sources and thus provide the intelli- customers resulting from the use of the information and descrip- gence necessary for the switch and related circuit operation. tions contained herein. This Manual deals with the third basic element of the ATS, the Safety Precautions required intelligence/supervisory circuits. Earlier ATSs were con- All safety codes, safety standards, and/or regulations must be trolled by relay logic type or a solid-state, single board controllers. strictly observed in the installation, operation, and maintenance In either case, the control panel consisted of a number of individ- of this device.
7 Ually mounted and wired devices offering a limited amount of sys- tem flexibility, especially in the case of the relay logic design. The ATC-300 controller advances the application of intelligence, supervisory, and programming capabilities for ATS equipment. WARNING. Product Overview THE WARNINGS AND CAUTIONS INCLUDED AS PART OF THE PRO- The ATC-300 controller is a comprehensive, multi-function, CEDURAL STEPS IN THIS DOCUMENT ARE FOR PERSONNEL SAFETY microprocessor based ATS controller . It is a compact, self-con- AND PROTECTION OF EQUIPMENT FROM DAMAGE. AN EXAMPLE. OF A TYPICAL WARNING LABEL HEADING IS SHOWN ABOVE TO tained, panel mounted device designed to replace traditional relay FAMILIARIZE PERSONNEL WITH THE STYLE OF PRESENTATION. and solid-state logic panels. THIS WILL HELP TO INSURE THAT PERSONNEL ARE ALERT TO.
8 WARNINGS, WHICH APPEAR THROUGHOUT THE DOCUMENT. IN. ADDITION, WARNINGS AND CAUTIONS ARE ALL UPPER CASE AND. BOLDFACE. For more information visit: IB01602009E. Instruction Booklet Effective: April 2006 Page 3. ATC- 300 automatic transfer switch controller Designed to meet the needs of markets worldwide, the Re- transfer ATC-300 controller : Re- transfer is defined as a change of the load connection from the Source 2 to the Source 1. Is a UL Recognized Component Complies with UL 1008/ CSA Source 1. Meets the Intent of UL 991 Source 1 is the primary source (normal source, normal power source, or normal). Meets IEC 1000-4-2, 1000-4-3, 1000-4-4, 1000-4-5, 1000-4- 6, and 1000-4-11 Source 2. Meets CISPR 11, Class A Source 2 is the secondary source (emergency source, emergency Complies with FCC Part 15, Class A power source, emergency, standby, or backup source).
9 Meets European Standards Conformance (CE mark) Source 1: Failed or Fails The ATC-300 controller provides an unmatched degree of pro- Source 1 is defined as failed when it is outside of its undervolt- grammed flexibility to address the needs of any system. It oper- age/overvoltage/ underfrequency/overfrequency (if applicable). ates from all system voltages between 120 and 600 Vac, single- setpoint ranges for the nominal voltage and frequency setting. phase and 3-phase, at 50 or 60 Hz. In addition, a period of no Source 2: Failed or Fails control power operation is provided. The ATC-300 controller Source 2 is defined as failed when it is outside of its undervolt- monitors the condition of the 3-phase line-to-line voltage and fre- age/overvoltage/ underfrequency/overfrequency (if applicable).
10 Quency of both the Source 1 and Source 2 power sources. It can setpoint ranges for the nominal voltage and frequency setting for also be programmed for single-phase operation. The ATC-300 a time exceeding seconds after the TDEF time delay expires. controller provides the necessary intelligence to insure that the switch operates properly through a series of programmed sensing transfer and timing functions. transfer is defined as a change of the load connection from the Source 1 to the Source 2 power source, except when specifically A standard ATC-300 controller will: used as transfer to Neutral . Monitor Source 1 and Source 2 power source voltages and fre- transfer to Neutral quencies; transfer to neutral is defined as when the load circuits are dis- Provide undervoltage monitoring of the Source 1 and Source 2 connect from both the Source 1 and Source 2 power sources.