A-ISOMETERÂ® IRDH375 IRDH375B - Bender

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Commissioning flow chart (threepart)The encircled figures in the flow chart correspond to the figures in the legendto the wiring diagram.Commissioning of the A-ISOMETER® (1)noIs the system to be monitored anunearthed system (IT system)?The IRDH375 is not suitable for thisapplication( contact BENDER).Is the maximum nominal voltageUn AC 793 VorUn DC 650 VnoUn is too high for directconnection. A coupling deviceproviding the respective voltagerange must be connected.Deenergize the installationbefore connecting the device!yesDevice connectionRecommended wire cross section ofconnecting cablesingle wire 0.2...4 mm2flexible 0.2... 2.5 mm2yesOptional deviceconnectionThe two PE connections and KE mustbe connected separately to theequipotential bonding.The terminals L1 and L2 must beconnected to Un of the system to bemonitored according to the wiring diagram.Connect the supply voltage Usto the terminals A1/+ and A2/-. Considerthe details indicated on the nameplate.623451An external kW measuring instrumentat M+/M- with a display range of10 kW...1000 kW,Scale centre point: 120 kWOutput current IRDH375: 0...400 mAOutput current IRDH375B: 0/4...20 mAExternal TEST button (NO contact) to theterminals T1 and T2External RESET button (NC contact) to theterminals R1 and R2When using the RS485 interface, take carethat a 120 W resistor is connected at 11the beginning and the end of the network.Terminate IRDH...: S1 = ONThe output contacts of the alarm relaysSystem fault (31-32-34)Alarm 1 (11-12-14)Alarm 2 (21-22-24)22 TGH1352en/11.2004
Commissioning flow chart (threepart)Commissioning of the A-ISOMETER® (2)Connect the supplyvoltage USConnect the voltage Un of theIT system to be monitoredThe A-ISOMETER carries out aself test. The display indicatesthe insulation value after finishingthe measurement.Only IRDH375B:set the clockShall the basic settingbe changed?Alarm1 = 40 kWAlarm2 = 10 kWK1/K2 = N/O operationMemory = offnoyesSelect ISO SETUP(see chapter operation and setting)Does one of the alarm LEDslight up?noyesThe insulation value of the systembeing monitored is below the presetresponse value. Change the responsevalue or improve the insulationcondition of the system.TGH1352en/11.200423
Page 1 and 2: Operating ManualInsulationR =010KWf
Page 3 and 4: Table of Contents1. Safety informat
Page 5 and 6: Table of Contents5.6.1 Bus address
Page 7 and 8: 1. Safety information1.1 Use for th
Page 9 and 10: Safety information1.2.4 Inspection,
Page 11 and 12: Safety information1.4 Directions fo
Page 13 and 14: 2. Function2.1 Common characteristi
Page 15 and 16: Functionmessage, provided that the
Page 17 and 18: Function2.5 Additional functions IR
Page 19 and 20: FunctionISOnet Function (COM SETUP)
Page 21: 3. Commissioning flow chart (threep
Page 25 and 26: 4. Connection4.1 WiringIRDH375(B) h
Page 27 and 28: ConnectionLegend to wiring diagram:
Page 29 and 30: Connection4.2.2 Connection with AGH
Page 31 and 32: ConnectionIn case of current-contro
Page 33 and 34: 5. Operation and setting5.1 Operati
Page 35 and 36: Operation and setting5.1.3 Function
Page 37 and 38: Operation and settingTGH1352en/11.2
Page 39 and 40: Operation and setting5.2.1 Diagram
Page 43 and 44: Operation and settingDiagram ISO SE
Page 45 and 46: Operation and setting5.5 Menu ISO A
Page 51 and 52: Operation and setting5.8 Menu LANGU
Page 53 and 54: 6. Serial interfacesThe A-ISOMETERs
Page 55 and 56: Serial interfaces6.2 RS485 interfac
Page 57 and 58: Serial interfaces6.4 BMS protocol (
Page 59 and 60: Serial interfacesThe following tabl
Page 61 and 62: 7. Technical data IRDH375(B)7.1 Dat
Page 63 and 64: Technical data IRDH375(B)General da
Page 65 and 66: Technical data IRDH375(B)7.3 Charac
Page 67 and 68: Technical data IRDH375(B)Current ou
Page 69 and 70: Technical data IRDH375(B)Current ou
Page 71 and 72: Technical data IRDH375(B)Dimension
Page 73 and 74:
Technical data IRDH375(B)7.4.3 Coup
Page 75 and 76:
INDEXAAGH... 28Alarm LED 1 33Alarm
Page 77 and 78:
INDEX77 TGH1352en/11.2004
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A-ISOMETERÂ® IRDH375 IRDH375B - Bender

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