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BENDER GmbH & Co KG
AGH675S-7/AGH675S-7MV15 series

AGH675S-7/AGH675S-7MV15 series

Product catalog summary

Product Description: The AGH675S-7 and AGH675S-7MV15 series coupling devices are designed to extend the nominal voltage range of the ISOMETER® IRDH275BM-7. These devices monitor the insulation resistance of IT medium voltage systems, with the AGH675S-7 supporting up to 7.2 kV and the AGH675S-7MV15 supporting up to 15.5 kV. Proper connection involves linking terminal 5 of the coupling device to terminal AK of the ISOMETER®.

Approvals and Ordering Information: The devices are approved for use with nominal system voltages of AC/DC 0…7.2 kV and 0…15.5 kV, with cable lengths of 500 mm and 2000 mm available. Specific article numbers are provided for ordering.

Wiring and Dimensions: Example wiring diagrams are provided for both the AGH675S-7 and AGH675S-7MV15. Dimensions are detailed in millimeters, ensuring proper installation and integration.

Insulation Coordination: The devices comply with DIN EN 61800-5-1 standards. The AGH675S-7 has a rated insulation voltage of AC 7.2 kV, while the AGH675S-7MV15 is rated at AC 15.5 kV. Various voltage tests, including type and routine tests, are specified to ensure safety and reliability.

Voltage Ranges and Environmental Conditions: The AGH675S-7 supports nominal system voltages of AC, 3(N)AC, DC 0…7.2 kV, and the AGH675S-7MV15 supports up to 15.5 kV. Both devices operate within a frequency range of 0…460 Hz. Environmental conditions for operation, transport, and storage are classified according to IEC 60721 standards.

Connection and Mounting: Connection details include high-voltage cable encapsulation and screw-type terminals. The devices support both rigid and flexible connections. They can be mounted in any position and have a degree of protection rated at IP 64 for internal components and IP 20 for terminals.

Other Technical Data: The devices are resin-encapsulated blocks with a flammability class of UL94 HB. They weigh up to 5100 g and are documented under number D00095.

Catalog excerpts

Coupling devices AGH675S-7/AGH675S-7MV15 series Product description The coupling devices of the AGH675S-7/AGH675S-7MV15 series are used to extend the nominal voltage range of the ISOMETER® IRDH275BM-7 illustrated in the wiring diagram. The ISOMETER® IRDH275BM-7 together with the coupling device AGH675S-7 monitors the insulation resistance of IT medium voltage systems up to 7,2 kV. The ISOMETER® IRDH275BM-7 together with two coupling devices AGH675S-7MV15 monitors the insulation resistance of IT systems up to 15,5 kV. Always two AGH675S-7MV15 together with one IRDH275BM-7 are required. Terminal...

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Coupling devices of the AGH675S-7/AGH675S-7MV15 series Wiring diagram AGH675S-7 (example) Wiring diagram AGH675S-7MV15 (example) DC 15.5 kV The terminals "AK" of the two coupling devices AKs are bridged and connected to terminal AK of the IRDH275BM-7. Dimension diagram Dimensions in mm 220 200 178

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Technical data Rated insulation voltage AGH675S-7MV15 Rated insulation voltage Voltage test according to IEC 61800-5-1 Type test: AC voltage test (basic insulation) AC voltage test (basic insulation) Partial discharge test Impulse voltage test (basic insulation) AC voltage test (basic insulation) Partial discharge test Routine test: Voltage ranges Nominal system voltage Un Nominal frequency fn Internal DC resistance R AGH675S-7MV15 Nominal system voltage Un Nominal frequency fn Internal DC resistance R Operating temperature (normal operation) - 10...+ 60 °C AC 7 2 kV Operating temperature (continuous...

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