Coupling device

Coupling device Intended use In conjunction with an ISOMETER®, the AGH204S-4 coupling device is used for monitoring the insulation of 3AC IT systems (unearthed systems). It is designed to extend the nominal voltage range of the ISOMETER® series shown in the wiring diagram at terminal AK160 up to 3(N)AC 0.. .1650 V, 50.. .400 Hz and DC 0.. .1840 V. At terminal AK80, it extends the range up to 3(N)AC 0.1300 V, 50.400 Hz. Any other use than that described in this manual is regarded as improper. The coupling device AGH204S-4 is used to extend the nominal voltage rangeof the ISOMETER® illustrated...

Wiring diagram In systems with a nominal system voltage of more than 690 V and with overvoltage category III, a fuse for the connection to the system to be monitored must be provided. * 2 A fuses recommended.

Technical data Insulation coordination acc. to DIN EN 61800-5-1 (VDE 0160-105-1) Rated insulation voltage Rated impulse voltage Overvoltage category Connection terminals Connection properties rigid/flexible Tightening torque Conductor sizes (AWG) Length connecting lead (ISOMETER® to AGH) screw type terminals 0.2…4 mm² / 0.2…2.5 mm² 0.5 Nm 24…12 ≤ 0.5 m Voltage test acc. to DIN EN 61800-5-1 (VDE 0160-105-1) Voltage impulse test (basic insulation) AC voltage test (basic insulation) Partial discharge test Voltage ranges Nominal system voltage Un incl. DC-components AK80 AK160 for UL applications...