Clipper Power System (CPS) - Eaton

1 Clipper Power System (CPS). Installation and Operation Manual (This manual applies to all CPS surge protection devices including Retrofit, Integrated, MCC and Busway applications). TABLE OF CONTENTS. PAGE. SECTION 1 INTRODUCTION 2. SECTION 2 INSTALLATION PROCEDURES (for Retrofit, MCC and Busway Applications). Retrofit CPS (mounted externally to 5. panelboards & switchboards). Caseless Suppressor (field integrated CPS installation) 7. MCC & Busway 9. SECTION 3 OPERATING FEATURES FOR ALL CPS UNITS. Internal Fusing and Status Indicator Lights 10.

2 Monitoring Options 10. SECTION 4 TROUBLESHOOTING GUIDE 12. SECTION 5 WARRANTY 12. Retrofit CPS. Integrated CPS. The Industry Leader in Power Protection Clipper Power System -1- IM-CS1-00008, Rev. E. Clipper Power System SECTION 1 INTRODUCTION. Clipper Power System (CPS) surge protection and Introduction filtering units provide clean Power for sensitive electronic loads. It is a common procedure to test distribution equipment with a form of hi-pot (or dielectric or The CPS units shunt high energy induced lightning megger) testing.

3 The hi-pot tester outputs a high surges as well as other forms of transient voltage signal at low current that will shut down if a disturbances. Properly installed CPS units protect short circuit occurs. The principle behind hi-pot critical equipment in hospital, commercial, computer, testing is that the high voltage will find any faults in manufacturing, telecommunication, financial and the distribution System and the low current and fairly military facilities. quick shut down will not damage distribution equipment.

4 Hi-pot testing is usually conduction The CPS removes Power disturbances from electrical phase and neutral to ground. distribution systems using a low impedance shunt path to ground. Surges and electrical line noise are Surge Protective Devices absorbed by the CPS and are prevented from travelling through distribution System wires to A Surge Protective Device (SPD) acts very quickly to sensitive electronic loads. Prior to installing the suppressor high voltages before they can damage Clipper , check the unit's voltage and configuration to sensitive electronics.

5 An SPD normally acts in the verify it matches your System voltage and wiring microsecond range and can withstand tens of configuration. thousands of Amps repeatedly. SPDs are not designed to prevent a continued overvoltage without damage. In order to protect electronics from damage, an SPD must be connected from phase to ground. WARN ING Lightning surges are almost always shunted to ground and the SPD must be connected this way to provide protection. The Problem During a hi-pot test, the SPD will turn on and shunt the Section of this manual details the installation high voltage to ground.

6 The hi-pot tester will continue procedures for retrofit, caseless, MCC and busway to supply current until it internally records the fault applications. Integrated units are factory installed condition. By this time the SPD has been exposed to and require no additional on-site installation. a continuous current that can damage the internal components. It is critical that hi-pot testing not be Section of this manual describes the operating performed on connected SPDs to prevent damage. features for the suppressor.

7 This section is From the installers point of view, it is also important relevant to all Clipper Power System units that SPD are not connected while performing a hi-pot including integrated, retrofit, MCC and busway test since the SPD will always cause the test to fail units. thus defeating the purpose of the test. Tech Note: Surge Protective Disconnecting SPDs / Performing Hi-Pot Testing Devices and Hi-Pot testing The only way to perform a hi-pot test in the presence of an SPD is to disconnect the SPD from the distribution System .

8 If the unit is connected through a circuit breaker, the breaker should be shut off as a first step. This is sufficient for a delta System to remove the SPD. On wye connected systems, the neutral must also be removed so that all paths to ground are isolated. An alternative method is to remove the ground from the SPD before any hi-pot testing is performed. All grounds must be removed, the wired ground, the conduit ground, and even the case ground. Because it is easy to miss a ground connection, it is recommended that the line and The Industry Leader in Power Protection Clipper Power System -2- IM-CS1-00008, Rev.

9 E. neutral connection are removed rather then the Additional tests should not be required. Due to the ground connection. possible damage that can occur, all integrated SPDs have a caution label applied warning against hi-pot Integrated SPDs testing of the assembly. We recommend that hi-pot testing not be done on distribution equipment with An integrated SPDs has unique problems of its own. SPD already mounted, either retrofit or integrated It is typically hard wired or permanently bus connected devices. If hi-pot testing is still going to be done, it can to the distribution System .

10 This will still require be accomplished by following the above instruction removal of all phase and neutral or the ground and removing the phases and neutral from the SPD. connections. These types of connections are usually Alternatively, for both integrated and retrofit models, if harder to remove and more care must be taken to the unit has a black thermoplastic box with bolts prevent damage. sticking out from it, the ground connection can be removed. The terminal is label Ground' and has a Cutler-Hammer Specific Instructions short wire connecting it to the metal case.