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Summary of Contents for I-Gard SENTINEL
- Page 1 SENTINEL HIGH RESISTANCE GROUNDING C-107EM Instruction Manual, January 2015...
- Page 2 ABOUT I-GARD I-Gard’s commitment to electrical safety provides both industrial and commercial customers with the products needed to protect their electrical equipment and the people that operate them. As the only electrical-safety focused company whose product portfolio includes neutral grounding resistors, high-resistance grounding systems and optical arc mitigation, we take pride in our technologies that reduce the frequency and impact of electrical hazards, such as arc flash and ground faults.
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Page 3: Table Of Contents
5. Operation/Set-Up ........................11 6. Additional Information ......................11 FIGURES Figure 1: Interior View ........................6 Figure 2: Sentinel Schematic Delta Connection ................6 Figure 3: Mounting Holes Dimensional Details ................7 Figure 4: Knock-Out Locations ....................8 Figure 5: Preferred Feeder Module DSP-DFM Wiring ...............9 Figure 6: Alternative Sensor Wiring ...................10... -
Page 4: General Description
The Sentinel system can assist in locating the fault with pulsing circuitry. In the event of a second ground fault, the Sentinel acts quickly to prevent the loss of two feeders by selectively tripping the lower priority feeder only. -
Page 5: High-Resistance Grounding
1000VAC where the ground fault current is limited to 5A or less. These new changes to the electrical code allow users of the I-Gard Sentinel to maintain a ground fault current of 5A or less on their electrical distribution system without interruptions caused by a single ground fault, thereby avoiding unscheduled shutdowns and production interruptions. -
Page 6: Installation
Figure 1: Interior View 3. INSTALLATION I-Gard Sentinel is housed in a NEMA 3R (IP-33) indoor rated enclosure containing the neutral grounding resistor, ground fault relay and isolation switch. Upon receipt, carefully open the protective shipping carton, remove all packing material and visually inspect the assembly. If the unit is damaged, immediately process a claim with the freight company. - Page 7 Mounting holes are 3/8” or 9.5 mm wide allowing the use of 5/16” or 9 mm diameter fasteners. Mount the I-Gard Sentinel securely to the wall in accordance with local codes. Once the I-Gard Sentinel is securely mounted, proceed to the connections. Electrical access to the interior is provided by means of eight knock out openings (See Figure 4) suitable for ½”...
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Page 8: Dsp Connecting Instructions
Figure 4: Knock-Out Locations 4. DSP CONNECTING INSTRUCTIONS All the wiring is between sensors and modules is 14 AWG or 2.5 size in metric system switchboard wire, which need not be shielded. 4-wire shielded cable should be used for the serial communications. A typical wiring schematic is shown in Figure 5. - Page 9 Always perform a final inspection. All foreign objects must be removed from inside the enclosure. All conductors must be secured in the proper positions before closing the door and energizing the system. DO NOT ENERGIZE the I-Gard Sentinel unless the door is closed and secured by the two bolts provided. DANGER...
- Page 10 Figure 6: Alternative Sensor Wiring Figure 7: Typical 4-wire Communications Connection...
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Page 11: Operation/Set-Up
For setup instructions please refer to the instructions set out in the C-409 DSP-OHMNI manual. 6. ADDITIONAL INFORMATION If you require any information or direction on how to proceed in ensuring unparalleled protection with your equipment please contact I-Gard customer service. We are here to help Monday to Friday 9:00am - 5:00pm EST. NOTES... - Page 12 Phone: 905-673-1553 Fax: 905-673-8472 Toll Free: 1-888-737-4787 sales@i-gard.com www.i-gard.com...
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