I-Gard mGARD-100 Quick Start Manual Download | Manualshive

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C-419EM Instruction Manual, March 2015

Ground fault relay

microprocessor-based relay

mGARD-100

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Summary of Contents for mGARD-100

Page 1: ...C 419EM Instruction Manual March 2015 Ground fault relay microprocessor based relay mGARD 100...

Page 2: ...mer service and technical leadership We build on this foundation by investing in developing new products in electrical safety education including EFC scholarship program by actively participating in t...

Page 3: ...safe 4 Manual Rreset 4 3 2 Dipswitch Settings 4 3 3 Indication 6 mGard Sym Remote Indicator 6 3 4 Reset 7 3 5 Ground Fault Test 7 4 Installation Instructions 8 4 1 Mounting 8 4 2 Built In Current Tran...

Page 4: ...nate false tripping when using the relay on systems with variable frequency drives With the harmonic filter disabled the relay will accurately respond to AC currents between 25 and 400Hz By using an i...

Page 5: ...mpere for all relays and coordinating between upstream and downstream relays by selecting different time delays 3 operation 3 1 Operation and Glossary of Terms Auto Reset After a trip the relay will a...

Page 6: ...s set to trip the relay contacts change their state Time Delay Intentional period of time programmed to elapse before the tripping operation of the relay It should not be confused with the breaking op...

Page 7: ...L R R R R L L R R L R R R R L R R R R 30 40 60 90 150 250 400 600 900 1500 2500 4 6 9 10 12 3 4 6 9 15 25 40 60 90 150 250 400 600 900 1000 1200 30 40 60 90 150 250 400 600 900 150 250 4000 6000 9000...

Page 8: ...t Trip LED Steady On Control voltage too low or mGARD 100 defective MGARD SYM REMOTE INDICATOR The mGARD SYM is a remote display indicator that is used in conjunction with I Gard relays The indicator...

Page 9: ...t is NOT necessary to press the remote test reset button after the ground fault has been cleared when the mGARD 100 is set in the pulsed trip auto reset mode In this mode the relay will reset automati...

Page 10: ...ing current sensor keep the distance between the relay and the sensor as short as possible Use twisted cable and increase the gauge of the conductor as per the table below Table 4 0 ZSCS secondary wir...

Page 11: ...4 Cables in form factor 2 42 mm 0 3 0 34 0 43 0 59 0 75 0 87 1 02 7 74 8 7 11 15 19 22 26 6 7 Cables in form factor 3 0 mm 0 37 0 43 0 54 0 73 0 93 1 07 1 26 9 6 10 8 14 18 24 27 32 9 10 Cablse in fo...

Page 12: ...phase and neutral conductors through the window of the interposing zero sequence current sensor Note that the relay is located downstream from the neutral ground point Position the cable in the centre...

Page 13: ...shows an mGARD 100 relay operating in non failsafe mode The relay is monitoring the neutral conductor in a resistance grounded system Figure 4 3 shows a system with several mGARD 100 relays monitoring...

Page 14: ...listed below in Table 5 1 Table 5 1 mGARD 100 DC control voltage options 12V 9 18 VDC 12DCV mGARD 100 12DCV 24V 18 36 VDC 24DCV mGARD 100 24DCV dc voltage range catalogue number suffix example 6 serv...

Page 15: ...ts Main Trip Relay Type Form Z N O and N C pair Rating 10A 250V AC resistive 10A 30V DC resistive Terminal Contact Material Clamping screw nickel plated brass Plug contacts tin plated bronze Physical...

Page 16: ...I GARD RESERVES THE RIGHT TO CHANGE SPECIFICATIONS OF ITS PRODUCTS WITHOUT NOTICE 8 dimensional drawings Figure 8 0 mGARD 100 dimensions in millimetres inches...

Page 17: ...Notes...

Page 18: ...www i gard com Phone 905 673 1553 Toll Free 1 888 737 4787 Fax 905 673 8472 sales i gard com...

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