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Instruction Manual C -102

hIgh RESISTANCE
gROUNDINg SYSTEM

g E M I N I

the power to protect

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Summary of Contents for IPC GEMINI

Page 1: ...Instruction Manual C 102 high RESISTANCE GROUNDING SYSTEM Gemini the power to protect...

Page 2: ...compromising of the resistor integrity the patented twin resistance paths in combination with the integrity monitoring relay form the heart of the Gemini system Limiting any ground fault to predetermi...

Page 3: ...rounding 9 5 2 Definitions and Applicable Standards 9 6 Additional Information 12 7 Instruction Manuals ibc Table of Figures Figure 1 Close up of Front Panel 3 Figure 2 Wiring Diagram for Gemini 4 Fig...

Page 4: ...ocate and isolate the fault without interrupting or opening circuit breakers This allows for the uninterrupted operation of process equipment Faults are indicated by front panel lights The TRIP lamp l...

Page 5: ...or severe personal injury Catalogue Numbers for the Gemini are GS 480 5 for 480V and GS 600 5 for 600V 5A resistor units Please ensure before installation of the unit that the correct version has bee...

Page 6: ...T G SYSTEM HEALTHY A TRIP INDICATING LIGHTS FAULT CURRENT RESISTOR FAULT GROUND FAULT R A Figure 2 Wiring Diagram for Gemini Figure 3 Outside Dimensions CONTACT OPENS AT 110 C AND CLOSES AT 102 C 301...

Page 7: ...ified as N 10 on terminal block and the system ground to the point identified as G 11 on terminal block Both the Canadian Electrical Code and the National Electrical Code require a minimum size of 8 A...

Page 8: ...e potential between the system neutral and ground will increase causing the meter to display the fault level which may be any value between 0 and 100 of 5A This current is also being monitored by the...

Page 9: ...50 IGMAX 8 UP 9 UP 10 UP CURRENT 5A 1000 1 CT 1 DOWN 2 DOWN 3 DOWN 4 DOWN 5 DOWN 6 DOWN Figure 6 GFR RM Dipswitch 4 MAINTENANCE Gemini is designed and constructed to operate properly with minimal mai...

Page 10: ...system DANGER Hazard of Electrical Shock Burn or Explosion Qualified personnel must perform testing referred to in this manual All power should be disconnected prior to making any connections or disco...

Page 11: ...rs cables and rotating machines 2 To reduce mechanical stresses in circuits and apparatus carrying fault currents 3 To reduce electric shock hazards to personnel caused by stray ground fault currents...

Page 12: ...current rating of the grounding impedance In no case shall the neutral conductor be smaller than No 8 copper or No 6 aluminum or copper clad aluminum c System Neutral Connection The system neutral con...

Page 13: ...ing of the protective device on the system 4 Neutral grounding devices shall have insulation voltages at least equal to the line to neutral voltage 10 1106 Location of Neutral Grounding Devices and Wa...

Page 14: ...hrough a resistor at the power source to limit the prospective ground fault current to 25 A or less b A grounding circuit shall originate at the grounded side of the resistor and extend along with the...

Page 15: ...M SIGMA Resistor Monitoring and Ground Fault Relay C 322 MGFR Ground Fault Relay Manual C 409 DSP OHMNI High Resistance Grounding System Manual C 102 Gemini High Resistance Grounding System Manual C 1...

Page 16: ...7615 Kimbel St Unit 1 Mississauga Ontario Canada L5S 1A8 Phone 905 673 1553 Toll Free 1 800 737 4787 Fax 905 673 8472 e mail sales i gard com www i gard com the power to protect...

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