Bender ISOMETER iso685-D-P, ISOMETER iso685W-D-P, ISOMETER iso685-S-P, ISOMETER iso685W-S-P User Manual

EN

Manual

ISOMETER® iso685-D-P

iso685W-D-P
iso685-S-P
iso685W-S-P

Insulation Monitoring Device
with integrated locating current injector
for IT AC systems
with galvanically connected rectifiers and inverters
and for IT DC systems

iso685-D-P_D00170_00_M_XXEN/06.2016

PLEASE READ THIS MANUAL AND ANY ACCOMPANYING DOCUMENTS CAREFULLY
AND KEEP THEM IN A SECURE PLACE FOR FUTURE REFERENCE.

Bender GmbH & Co. KG

Postfach 1161 • 35301 Gruenberg • Germany
Londorfer Straße 65 • 35305 Gruenberg • Germany

Tel.: [phone]
Fax: [phone]

E-Mail: [e-mail]
Web: www.bender.de

Customer service
Service-Hotline: 0700-BenderHelp (Telephone and Fax)
Carl-Benz-Straße 8 • 35305 Gruenberg • Germany

Tel.:[phone]
Fax:[phone]

E-Mail:[e-mail]

© Bender GmbH & Co. KG

All rights reserved.

Reproduction only with permission

of the publisher.

Subject to change.

Table of contents

1. Important information .................................................................... 8

1.1 How to use this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2 Technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2.1 First level support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2.2 Repair service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2.3 Field service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Training courses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4 Delivery conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.5 Inspection, transport and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.6 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.7 Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2. Safety instructions .......................................................................... 10

2.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2 Work activities on electrical installations. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.3 Device-specific safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3. Function ........................................................................................... 11

3.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.1 Features ISOMETER® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.2 Features EDS44… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2.1 General product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2.2 Special characteristics of ISOMETER® iso685-S-P with front panel 12

3.3 Function description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.4 Insulation fault location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.5 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.6 Self test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.7 Compatibility with EDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4. Device overview ..............................................................................15

4.1 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

4.2 Device variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

4.3 Connections and panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

4.4 Display elements and device buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

5. Mounting .......................................................................................... 19

5.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

5.2 Screw mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.3 DIN rail mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6. Connection ....................................................................................... 20

6.1 Connection requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

6.2 Connection to a 3(N)AC system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

6.3 Connection to an AC system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

6.4 Connection to a DC system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

6.5 Connection to the X1 interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

6.6 Connection to the supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

6.7 Connection to the Ethernet interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

6.8 Connection to the relay 1 interface (11 12 14) . . . . . . . . . . . . . . . . . . . . . . 25

6.9 Connection to the relay 2 interface (21 22 24) . . . . . . . . . . . . . . . . . . . . . . 25

6.10 Connection to the BB bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.11 Connecting the EDS to the ISOMETER® . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.11.1 Connection example ISOMETER® to EDS . . . . . . . . . . . . . . . . . . . . . . .27

6.11.2 Connection to a 3(N)AC system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

6.11.3 Connection to an AC system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

6.11.4 Connection to a DC system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

6.11.5 System structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

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iso685-D-P_D00170_00_M_XXDE/04.2016

Table of contents

7. Commissioning ............................................................................... 32

7.1 General initial commissioning process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.2.1 Set language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.2.2 Set time and date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.2.3 Setting system type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.2.4 Set profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.2.5 Setting EDS mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.2.6 Setting EDS current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.2.7 Set response value Ran1 for alarm 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.2.8 Set response value Ran2 for alarm 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.3 Recommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

7.4 Commissioning EDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8. Display .............................................................................................. 36

8.1 Standard display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.2 Fault display (active) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.3 Fault display (inactive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

8.4 Acknowledging a fault message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

8.5 Data - isoGraph. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

8.6 History memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.7 Insulation fault location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.8 Initial measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

9. Menu ................................................................................................. 41

9.1 Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

9.2 Operating and navigating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.2.1 Easy operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.2.2 Multiple selection in the device menu . . . . . . . . . . . . . . . . . . . . . . . . . . 43

10. Settings........................................................................................... 44

10.1 Settings in the device menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

10.1 1. Alarm settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.1 Insulation alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.1.1 Alarm 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.1.2 Alarm 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.1.3 Fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.2 DC alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.2.1 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.2.2 U(DC-E). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 1.3 Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.4 System type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.5 ISOnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.5.1 ISOnet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.5.2 Number of devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.6 Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.7 T(Start) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.8 Coupling monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.1 1.9 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10.1 1.9.1 Digital 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10.1 1.9.1.1 Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10.1 1.9.1.2 t(on). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10.1 1.9.1.3 t(off) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10.1 1.9.1.4 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.9.2 Digital 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.9.3 Digital 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.10 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.10.1 Relay 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.10.1.1 TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.10.1.2 Relay operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.10.1.3 Function 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.1 1.10.1.4 Function 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

10.1 1.10.1.5 Function 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

10.1 1.10.2 Relay 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

10.1 1.10.3 Digital 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

10.1 1.10.3.1 TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.3.2 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.3.3 Function 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.3.4 Function 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

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10.1 1.10.3.5 Function 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.4 Digital 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.5 Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.5.1 TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.5.2 Function 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.5.3 Function 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.5.4 Function 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

10.1 1.10.6 Analogue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

10.1 1.10.6.1 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

10.1 1.10.6.2 Midscale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

10.1 1.10.6.3 TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

10.1 1.10.6.4 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

10.1 2. EDS (insulation fault location) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

10.1 2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

10.1 2.1.1 Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

10.1 2.1.2 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

10.1 2.1.3 Using a portable EDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

10.1 2.2 Scanning channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

10.1 2.3 Activating channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

10.1 2.4 Group settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

10.1 2.4.1 Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

10.1 2.4.1.1 Current transformer (CT) . . . . . . . . . . . . . . . . . . . . . . . . . 53

10.1 2.4.1.2 CT monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

10.1 2.4.1.3 I∆L Response value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

10.1 2.4.1.4 I∆n Response value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

10.1 2.4.2 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

10.1 2.4.2.1 Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

10.1 2.4.2.2 Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

10.1 2.4.2.3 Digital output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

10.1 2.4.2.4 Function 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.2.5 Function 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.2.6 Function 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.3 Dig. input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.3.1 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.3.2 t(on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.3.3 t(off) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.3.4 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.4 Device settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

10.1 2.4.4.1 System type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

10.1 2.4.4.2 Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

10.1 2.4.4.3 Trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

10.1 2.4.4.4 Fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

10.1 2.5 Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

10.1 2.5.1 Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

10.1 2.5.2 Current transformer monitoring . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.5.3 Response value I∆L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.5.4 Response value I∆n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.1 Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.1.1 TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.1.2 Operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.1.3 Function 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.1.4 Function 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.1.5 Function 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.2 Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.2.1 TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.2.2 Function 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.2.3 Function 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.2.4 Function 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.3 Digital output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.3.1 TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.3.2 Function 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.3.3 Function 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.6.3.4 Function 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.7 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.7.1 Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.7.2 t(on). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.7.3 t(off). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.7.4 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 2.8 Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.1 2.8.1 Trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.1 2.8.2 Fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.1 2.9 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.1 3. Data measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.1 4. Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

10.1 5. History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.1 6. Device settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

10.1 6.1 Language. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

10.1 6.2 Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.2.1 Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5

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10.1 6.2.2 Format (time). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.2.3 Summer time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.2.4 Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.2.5 Format (date). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.2.6 NTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.2.7 NTP server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.2.8 UTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.3 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.1 6.3.1 Write access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.2 Ethernet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.2.1 DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.2.2 IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.2.3 SN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.2.4 Std. GW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.2.5 DNS server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.2.6 Domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.3 BCOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.3.1 System name. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.3.2 Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.3.3 Device address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.3.4 Timeout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.3.5 TTL for subscription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.4 Modbus TCP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1 6.3.4.1 Port 502. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.3.5 BS bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.3.5.1 Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.4 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.4.1 Brightness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.5 Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.5.1 Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.5.2 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.7 Data backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 6.8 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 7. Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.2 Factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

11. Device communication ................................................................64

11.1 Ethernet interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

11.2 BCOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

11.3 Modbus TCP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

11.4 Web server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

11.5 BS bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

12. Insulation fault location ..............................................................69

12.1 General description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

12.2 Required settings for insulation fault location . . . . . . . . . . . . . . . . . . . . . 69

12.3 Indication on the display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

12.4 Starting and stopping the insulation fault location. . . . . . . . . . . . . . . . .69

13. Special functions for coupled IT systems .................................70

13.1 Particularities when monitoring coupled IT systems . . . . . . . . . . . . . . . 70

13.2 System isolation via digital input with two coupled systems . . . . . . .70

13.3 System isolation via ISOnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

14. Device profiles ............................................................................... 73

15. Diagrams ........................................................................................ 74

15.1 Response time profile power circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

15.2 Response time profile control circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

15.3 Response time profile generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

15.4 Response time profile high capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . .75

15.5 Response time profile inverter > 10 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

15.6 Response time profile inverter < 10 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

15.7 Relative uncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

16. Alarm messages ............................................................................78

16.1 Alarm messages of the ISOMETER® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

16.2 Alarm messages of the EDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

6

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17. Technical data ............................................................................... 81

17.1 Tabular data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

17.2 Option W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

17.3 Standards and certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

17.4 Ordering details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

18. Glossary .......................................................................................... 86

Index ....................................................................................................... 87

7

iso685-D-P_D00170_00_M_XXDE/04.2016

1. Important information

DANGER

WARNING

CAUTION

Important information

1.1 How to use this manual

This manual is intended for qualified personnel working in electrical en­gineering and electronics!

Always keep this manual within easy reach for future reference.

To make it easier for you to understand and revisit certain sections in this manual, we
have used symbols to identify important instructions and information. The meaning of
these symbols is explained below:

This signal word indicates that there is a high risk of danger that will re­sult in electrocution or serious injury if not avoided.

This signal word indicates a medium risk of danger that can lead to
death or serious injury if not avoided.

1.2 Technical support

For commissioning and troubleshooting Bender offers you:

1.2.1 First level support

Technical support by phone or e-mail for all Bender products

• Questions concerning specific customer applications

• Commissioning

• Troubleshooting

Telephone: [phone]*
Fax: [phone]

In Germany only: 0700BenderHelp (Tel. and Fax)
E-mail: [e-mail]

1.2.2 Repair service

Repair, calibration, update and replacement service for Bender products

• Repairing, calibrating, testing and analysing Bender products

• Hardware and software update for Bender devices

• Delivery of replacement devices in the event of faulty or incorrectly delivered
Bender devices

• Extended guarantee for Bender devices, which includes an in-house repair service or
replacement devices at no extra cost

This signal word indicates a low level risk that can result in minor or
moderate injury or damage to property if not avoided.

This symbol denotes information intended to assist the user in making
optimum use of the product.

8

Telephone: [phone]** (technical issues)

[phone]**, -785** (sales)

Fax: [phone]
E-mail: [e-mail]

Please send the devices for repair to the following address:

Bender GmbH, Repair-Service,
Londorfer Strasse 65,
35305 Grünberg

iso685-D-P_D00170_00_M_XXDE/06.2016

Important informationImportant information

1.2.3 Field service

On-site service for all Bender products

• Commissioning, parameter setting, maintenance, troubleshooting for Bender products

• Analysis of the electrical installation in the building (power quality test, EMC test,
thermography)

• Training courses for customers

Telephone: [phone]**, -762 **(technical issues)

[phone]** (sales)

Fax: [phone]
E-mail: [e-mail]
Internet: www.bender-de.com

*Available from 7.00 a.m. to 8.00 p.m. 365 days a year (CET/UTC+1)
**Mo-Thu 7.00 a.m. - 8.00 p.m., Fr 7.00 a.m. - 13.00 p.m.

1.3 Training courses

Bender is happy to provide training regarding the use of test equipment.
The dates of training courses and workshops can be found on the Internet at
www.bender-de.com -> Know-how -> Seminars.

1.4 Delivery conditions

Bender sale and delivery conditions apply.
For software products the "Softwareklausel zur Überlassung von Standard-Software als
Teil von Lieferungen, Ergänzung und Änderung der Allgemeinen Lieferbedingungen für
Erzeugnisse und Leistungen der Elektroindustrie" (software clause in respect of the li­censing of standard software as part of deliveries, modifications and changes to general
delivery conditions for products and services in the electrical industry) set out by the ZVEI
(Zentralverband Elektrotechnik- und Elektronikindustrie e. V.) (German Electrical and
Electronic Manufacturer's Association) also applies.
Sale and delivery conditions can be obtained from Bender in printed or electronic format.

1.5 Inspection, transport and storage

Inspect the dispatch and equipment packaging for damage, and compare the contents
of the package with the delivery documents. In the event of damage in transit, please
contact Bender immediately. The devices must only be stored in areas where they are
protected from dust, damp, and spray and dripping water, and in which the specified
storage temperatures can be ensured.

1.6 Warranty and liability

Warranty and liability claims in the event of injury to persons or damage to property are
excluded if they can be attributed to one or more of the following causes:

• Improper use of the device.

• Incorrect mounting, commissioning, operation and maintenance of the device.

• Failure to observe the instructions in this operating manual regarding transport,
commissioning, operation and maintenance of the device.

• Unauthorised changes to the device made by parties other than the manufacturer.

• Non-observance of technical data.

• Repairs carried out incorrectly and the use of replacement parts or accessories not
approved by the manufacturer.

• Catastrophes caused by external influences and force majeure.

• Mounting and installation with device combinations not recommended by the man­ufacturer.

This operating manual, especially the safety instructions, must be observed by all person­nel working on the device. Furthermore, the rules and regulations that apply for accident
prevention at the place of use must be observed.

1.7 Disposal

Abide by the national regulations and laws governing the disposal of this device. Ask
your supplier if you are not sure how to dispose of the old equipment.
The directive on waste electrical and electronic equipment (WEEE directive) and the di­rective on the restriction of certain hazardous substances in electrical and electronic
equipment (RoHS directive) apply in the European Community. In Germany, these poli­cies are implemented through the "Electrical and Electronic Equipment Act" (ElektroG).
According to this, the following applies:

• Electrical and electronic equipment are not part of household waste.

• Batteries and accumulators are not part of household waste and must be disposed
of in accordance with the regulations.

• Old electrical and electronic equipment from users other than private households
which was introduced to the market after 13 August 2005 must be taken back by the
manufacturer and disposed of properly.

For more information on the disposal of Bender devices, refer to our homepage at
www.bender-de.com -> Service & support.

9

iso685-D-P_D00170_00_M_XXDE/06.2016

2. Safety instructions

DANGER

WARNING

CAUTION

Safety instructions

2.1 General safety instructions

Part of the device documentation in addition to this manual is the enclosed "Safety in­structions for Bender products".

2.2 Work activities on electrical installations.

Only qualified personnel are permitted to carry out the work necessary
to install, commission and run a device or system.

Risk of electrocution due to electric shock!

Touching live parts of the system carries the risk of:

• An electric shock

• Damage to the electrical installation

• Destruction of the device

Before installing and connecting the device, make sure that the in­stallation has been de-energised. Observe the rules for working on elec-

trical installations.

If the device is used outside the Federal Republic of Germany, the applicable local stand­ards and regulations must be complied with. The European standard EN 50110 can be
used as a guide.

2.3 Device-specific safety information

Make sure that the basic settings meet the requirements of the IT system.
Children and unauthorised persons must not have access to or contact
with the ISOMETER®.

Make sure that the operating voltage is correct!

Prior to insulation and voltage tests, the ISOMETER® must be disconnected
from the IT system for the duration of the test. In order to check the correct
connection of the device, a functional test has to be carried out before start­ing the system.

In the event of an alarm message of the ISOMETER®, the insulation fault
should be eliminated as quickly as possible.

If the ISOMETER® is installed inside a control cabinet, the insulation fault
message must be audible and/or visible to attract attention.

10

When using ISOMETER®s in IT systems, make sure that only one active
ISOMETER® is connected in each interconnected system. If IT systems are
interconnected via coupling switches, make sure that ISOMETER®s not
currently used are disconnected from the IT system and deactivated. IT
systems coupled via diodes or capacitances may also influence the insu­lation monitoring process so that a central control of the different
ISOMETER®s is required.

The ISOMETER®s are built in accordance with state-of-the-art technology and accepted
recognised safety regulations. However, the use of such devices may introduce risks to
the life and limb of the user or third parties and/or result in damage to the ISOMETER® or
other property.

iso685-D-P_D00170_00_M_XXDE/06.2016

Function

*

3. Function

Only use the ISOMETER®:

• As intended

• In perfect working order
Immediately rectify any faults that may endanger safety. Do not make any unauthorised

changes and only purchase spare parts and optional accessories recommended by the
manufacturer of the devices. Failure to observe this requirement can result in fire, electric
shock and injury.
Unauthorised persons must not have access to or contact with the ISOMETER®.
Reference signs must always be clearly legible. Replace damaged or illegible signs imme­diately.

2.4 Intended use

The ISOMETER® monitors the insulation resistance of unearthed AC/DC main circuits (IT
systems) with mains voltages of AC 0…690 V or DC 0…1000 V.
DC components existing in AC/DC systems do not influence the operating characteristics.
A separate supply voltage allows de-energised systems to be monitored too. The maxi­mum permissible system leakage capacitance is 0…1000 µF, depending on the profile.
In combination with an insulation fault locator (EDS), the ISOMETER® can be used for in­sulation fault location. By means of measuring current transformers, the EDS detects the
locating current pulses generated by the ISOMETER® in unearthed DC, AC and three­phase power supplies (IT systems) and evaluates them.

Intended use also implies:

• The observation of all information in the operating manual

• Compliance with test intervals

In order to meet the requirements of applicable standards, customised parameter set­tings must be made on the equipment in order to adapt it to local equipment and oper­ating conditions. Please heed the limits of the area of application indicated in the
technical specifications.

Any other use than that described in this manual is regarded as improper.

3.1 Features

3.1.1 Features ISOMETER®

• ISOMETER® for IT AC systems with galvanically connected rectifiers or inverters and
for IT DC systems (IT = unearthed systems)

• Automatic adaptation to the existing system leakage capacitance

• Combination of and other profile-specific measurement methods

• Two separately adjustable response value ranges of 1 kΩ…10 MΩ for alarm 1 and
alarm 2

• High-resolution graphic LC display for excellent readability and recording of the
device status

• Connection monitoring (monitoring of the measuring lines)

• Automatic device self test

• Graphical representation of the insulation resistance over time (isoGraph)

• History memory with real-time clock (buffer for three days) for storing 1023 alarm
messages with date and time

• Current or voltage output 0(4)…20 mA, 0…400 µA, 0…10 V, 2…10 V (galvanically
separated), which is analogous to the measured insulation value of the system

• Freely programmable digital inputs and outputs

• Remote setting of certain parameters via the Internet
(Option; COMTRAXX® gateway)

• Worldwide remote diagnosis via the Internet (made available by Bender Service
only)

• RS-485/BS (Bender sensor bus) for communication with other Bender devices

• ISOnet: Internal separation of the ISOMETER® from the IT system to be monitored
(e.g. if several IT systems are interconnected)

• BCOM, Modbus TCP and web server

• Locating current injection for selective insulation fault location

• Indication of the insulation faults selectively located by the EDS system

• Parameter setting of EDS systems

• Customer-specific texts for each measuring channel

11

iso685-D-P_D00170_00_M_XXDE/06.2016

FunctionFunction

3.1.2 Features EDS44…

• Insulation fault location in AC, 3AC and DC IT systems
(AC 24…690 V,

• Up to 12 measuring current transformers of the W…, WR…, WS… measuring cur­rent transformer series can be connected

• Response sensitivity insulation fault location:
EDS440 2…10 mA
EDS441 0.2…1 mA

• Response sensitivity residual current measurement:
EDS440 100 mA…10 A
EDS441 100 mA…1 A

• Communication of the components via BS bus (RS-485) or BB bus

DC 24…500 V

)

3.2 Product description

3.2.1 General product description

The ISOMETER® is an insulation monitoring device for IT systems in accordance with IEC
61557-8 and IEC 61557-9. It is universally applicable in AC, 3(N)AC, AC/DC and DC sys­tems. AC systems may include extensive DC-supplied loads (such as rectifiers, inverters,
variable-speed drives).

3.2.2 Special characteristics of ISOMETER® iso685-S-P with front panel

The ISOMETER® iso685-D-P and iso685W-D-P are devices of the iso685 device family with
integrated display. This manual applies in full to these ISOMETER®s.
The ISOMETER® iso685-S-P and iso685W-S-P are sensor variants of the iso685 device fam­ily without display. The only difference between these variants and the ISOMETER®s
iso685-D-P and iso685W-D-P is that they do not feature a display. The ISOMETER®s
iso685-S-P and iso685W-S-P must be used in combination with a front panel because the
devices are operated via the front panel. The operation of the front panel is equal to the
operation of the ISOMETER®s with integrated display, which is described in this manual.

Hereafter, the ISOMETER®s with integrated display are described. This description is sim­ilar to the combination of ISOMETER® sensor variants and the front panel FP200. The de­vices to which this manual applies will be referred to as ISOMETER®s hereafter.

3.3 Function description

The insulation monitoring device continuously monitors the entire insulation resistance
of an IT system during operation and triggers an alarm when the value falls below a pre­set response value. To obtain a measurement, the device has to be connected between
the IT system (unearthed system) and the protective earth conductor (PE). A measuring
current in the µA range is superimposed onto the system which is recorded and evaluat­ed by a microcontrolled measuring circuit. The measuring time depends on the selected
measurement profiles, the system leakage capacitance, the insulation resistance and
possible system-related disturbances.

The response values and other parameters are set using a commissioning wizard or via
different setup menus using the device buttons and a high-resolution graphic LC display.
The selected settings are stored in a permanent fail-safe memory. Different languages
can be selected for the setup menus and the messages indicated on the display. The de­vice utilises a clock for storing fault messages and events in a history memory with time
and date stamp. The settings can be protected against unauthorised modifications by a
password. To ensure proper functioning of the connection monitoring, the system type
3AC, AC or DC must be set and the appropriate terminals L1/+, L2, L3/- must be
connected.

12

Only the sensor variant (ISOMETER® iso685-S-P or iso685W-S-P) can be
connected to the front panel. Connection to the display variant
(ISOMETER® iso685-D-P or iso685W-D-P) is not possible.

iso685-D-P_D00170_00_M_XXDE/06.2016

FunctionFunction

CAUTION

The ISOMETER® is able to measure the insulation resistance reliably and precisely in all
common IT systems (unearthed systems). Due to various applications, system types, op­erating conditions, application of variable-speed drives, high system leakage capacitanc­es etc., the measurement technique must be able to meet varying requirements in order
to ensure an optimised response time and an optimised relative uncertainty. Different
measurement profiles which can be selected from a setup menu allow optimum adapta­tion of the measurement technique to the specific application.
If the preset response value falls below the value of alarm 1 and/or alarm 2, the associated
alarm relays switch, the LEDs ALARM 1 or ALARM 2 light and the measured value is shown
on the LC display (in case of insulation faults in DC systems, a trend graph for the faulty
conductor L+/L- is displayed). If the fault memory is activated, the fault message will be
stored. Pressing the RESET button resets the insulation fault message, provided that the
insulation resistance is at least 25 % above the preset response value. As additional Infor­mation, the quality of the measuring signal and the time required to update the meas­ured value are shown on the display. A poor signal quality (1-2 bars) may be an indication
that the wrong measurement profile has been selected.
The ISOMETER® has an internal system isolating switch, which makes it possible to oper­ate several ISOMETER®s in coupled IT systems. For this purpose, the ISOMETER®s are con­nected via an Ethernet bus. The integrated ISOnet function ensures that only one
ISOMETER® is actively measuring at a time, while the other devices are completely isolat­ed from the system and waiting in standby mode for measuring permission.

3.4 Insulation fault location

An additional function of the ISOMETER® in combination with the EDS is the selective in­sulation fault location. Therefore, the ISOMETER® generates a periodic locating current af­ter the values has fallen below the set response value R
system conductors are alternately connected to earth via a defined resistance. The result­ing locating current depends on the size of the existing insulation fault and the system
voltage. It is limited by the ISOMETER® depending on the settings. The insulation fault is
selectively located by means of the EDS and the measuring current transformer connect­ed to it. The locating current flows from the locating current injector via the live lines to
the insulation fault position taking the shortest way. From there, it flows through the in­sulation fault and the conductor PE back to the ISOMETER®. This locating current pulse is
detected by the measuring current transformer on the insulation fault path and signalled
by the connected EDS.
For the duration of the insulation fault location, the function of the insulation monitoring
device is deactivated. If during the insulation fault location the locating current falls be­low the value measurable by the EDS, the insulation fault location is ended by the
ISOMETER®.

Risk of malfunctions due to excessive locating current on sensitive
system parts!

The locating current flowing between the IT system and earth can cause
controller faults in sensitive parts of the system, such as the PLC or relay.
Ensure that the level of the locating current is compatible with the system
to be monitored.

(LED ALARM 2). Thereby, the

an2

13

3.5 Interfaces

• Communication protocol Modbus TCP

• BCOM for Bender device communication via Ethernet

• BS bus for communication of Bender devices (RS-485)

• BB bus for communication of Bender devices (Bender-internal device bus)

• Integrated web server for reading out measured values and for parameter setting

iso685-D-P_D00170_00_M_XXDE/06.2016

FunctionFunction

√

3.6 Self test

After switching on the supply voltage, the ISOMETER automatically and continuously
checks all internal measuring functions, the components of the process control such as
the data and parameter memory, as well as the connections to the IT system and earth.
Additionally, all EDS devices connected to the ISOMETER® are tested.

The self test can also be activated manually by means of the test button to check the func­tions of the relays (depending on the configuration) or it can be selected via the "Control"
menu (refer to page 59).

The progress of the manual self test is shown on the LC display by a bar graph. Depending
on the conditions in the IT system being monitored, the self test is completed after
15…20 seconds. The device then returns to the standard mode (measurement mode)
and the actual measured value will be displayed after the measuring time has expired.
The display shows the message

Initial measurement

ured (refer to “Initial measurement” on page 40).

If a fault is detected during the self test, the respective LEDs of the device light (refer to

“Alarm messages” on page 78). In addition, the respective message will be indicated on

the display and a previously programmed output will provide the respective signal.

TEST

√ Messtechnik

Ankopplung
Anschluss Erde
Ausgänge

33 %

until the first valid value is meas-

3.7 Compatibility with EDS

Device Notes

iso685-x-P

EDS440-L

EDS440-S

EDS441-L

EDS441-S

EDS441-LAB

EDS460/490L

EDS460/490D

EDS461/491L

EDS461/491D

EDS150

EDS151

I

O

I

O

I

I

I

I

I

–

–

EDS440-L
EDS440W-L

EDS440-S
EDS440W-S

EDS441-L
EDS441W-L

EDS441-S
EDS441W-S

EDS441-LAB
EDS441W-LAB

Not recommended for new systems

Not recommended for new systems

Not recommended for new systems

Not recommended for new systems

EDS150 B9108 0103

EDS151 B9108 0101

B91080202
B91080202W

B91080201
B91080201W

B91080205
B91080205W

B91080204
B91080204W

B91080207
B91080207W

14

The test has been run and the result was positive.

The test has been run and the result was negative.

The test is not available and is not carried out
(e.g. due to specific device settings).

The test is running.

EDS195P X EDS195P B91082040

Legend:

X = can be combined

I = can be combined + communication via BS bus

O = can be combined + communication via BB bus

– = limited compatibility + communication via BS bus

No indication of messages on the ISOMETER®.
Parameter setting via the ISOMETER® not possible.
Local fault indication on EDS only.

iso685-D-P_D00170_00_M_XXDE/06.2016

4. Device overview

4.1 Dimensions

108 mm

110 mm

mm 39

15

iso685-D-P_D00170_00_M_XXDE/06.2016

Device overview

ISOMETER® iso685(W)-D-P

ISOMETER® iso685(W)-S-P connected to front panel FP200 via an RJ45 cable

4.2 Device variants

iso685-D-P:

iso685-S-P:

Option "W":

The device variant ISOMETER® iso685-D-P features a high-resolution graphic LC display and operating controls for direct operation of the device functions.
It cannot be combined with an FP200.

The device variant ISOMETER® iso685-S-P features neither a display nor operating controls.
It can only be used in combination with the FP200 and it is operated via this front panel.

The ISOMETER®s with and without integrated display are available with option "W" for extreme climatic and mechanical conditions
(ISOMETER® iso685W-D-P and iso685W-S-P).

16

iso685-D-P_D00170_00_M_XXDE/06.2016

Device overview

A1/+, A2/- Connection to the power supply voltage U

s

L1/+ Connector for the IT system to be monitored
L2 Connector for the IT system to be monitored
L3/- Connector for the IT system to be monitored
KE, E Connection to PE

To p

PGH ON

ON

RESET

DATA

LEDs: PGH ON, SERVICE,
ALARM 1, ALARM 2

MENU
ESC

TEST

INFO
OK

X3

EDS

iso685-D-P

PGH ON

X4

X3 Optional expansion module for Bender devices (e. g. BB-Bus)
X4 REMOTE interface to connect to the FP200

iso685-S-P

Back

Front

ETH

X1 Multifunctional I/O interface (refer to page 23)
ETH Ethernet interface
R Switchable terminating resistor for termination

of the RS-485 interface
11 12 14 Connector for alarm relay 1
21 22 24 Connector for alarm relay 2

Bottom

4.3 Connections and panel

17

iso685-D-P_D00170_00_M_XXDE/06.2016

Device overviewDevice overview

PGH ON

1

7

8

9

10

11

12

2

3

4

5

6

4.4 Display elements and device buttons

Display elements

The LED "ON" lights when the device is turned on.

1ON

2

3PGH ON

4

5

6

SERVICE

ALARM 1

ALARM 2

The LED "ON" flashes during ISOnet operation if the device is active in
the ISOnet interconnection.

The device display shows information regarding the device and the
measurements.
Other information is available in the chapter “Display” from page 36.

The LED "PGH ON" flashes
the locating current for the insulation fault location is generated.

The LED "SERVICE" lights when there is either a device fault or a connec­tion fault, or when the device is in maintenance mode.

The LED "ALARM 1" lights when the insulation resistance of the IT system
falls below the set response value R

The LED "ALARM 2" lights when the insulation resistance of the IT system
falls below the set response value R

during insulation fault location

an1

an2

Device buttons

You can adjust the device settings in the respective menu using the menu buttons.
Depending on the menu entry, one of the options displayed below is assigned to the
buttons.

MENU Opens the device menu.

7

ESC

EDS

8

TEST

9

RESET

10

Info

. It indicates that

11

OK

DATA

12

.

.

Cancels the current process or
navigates one step back in the device menu.

Manually starts the insulation fault location, which runs continuously.
Stops the insulation fault location immediately when it is pressed again.

Navigates up in a list or increases a value.

Starts the device self test.

Navigates forwards (e.g. to the next setting step) or
selects a parameter.

Resets alarms.

Navigates backwards (e.g. to the previous setting step) or
selects a parameter.

Shows information.

Confirms an action or a selection.

Indicates data and values.

Navigates down in a list or reduces a value.

18

iso685-D-P_D00170_00_M_XXDE/06.2016

5. Mounting

DANGER

72 mm

108 mm

54 mm

100 mm

107,3 mm

Mounting

5.1 General instructions

Only qualified personnel are permitted to carry out the work necessary
to install, commission and run a device or system.

Risk of electrocution due to electric shock!

Touching live parts of the system carries the risk of:

• An electric shock

• Damage to the electrical installation

• Destruction of the device

Before installing and connecting the device, make sure that the in­stallation has been de-energised. Observe the rules for working on elec-

trical installations.

5.2 Screw mounting

19. Fix the three mounting clips delivered with the device (two of them packed sepa­rately) manually or using a tool, as illustrated below.

20. Drill the mounting holes for the M4 thread according to the dimensioned drilling
template.

21. Fix the ISOMETER® using three M4 screws.

19

iso685-D-P_D00170_00_M_XXDE/06.2016

Connection

DANGER

DANGER

DANGER

WARNING

6. Connection

5.3 DIN rail mounting

1. Fix the three mounting clips delivered with the device (two of them packed sepa­rately) manually or using a tool, as illustrated below.

2. Snap the ISOMETER® securely onto the DIN rail.

6.1 Connection requirements

Consider the minimum distance to adjacent devices:
lateral 0 mm, top 20 mm, bottom 20 mm.

Only qualified personnel are permitted to carry out the work necessary
to install, commission and run a device or system.

Risk of electrocution due to electric shock!

Touching live parts of the system carries the risk of:

• An electric shock

• Damage to the electrical installation

• Destruction of the device

Before installing and connecting the device, make sure that the in­stallation has been de-energised. Observe the rules for working on elec-

trical installations.

Risk of electric shock!

Nominal voltages up to 1000 V may be present on the terminals L1/+ to
L3/- which can be lethal. Make sure the terminal covers are properly
mounted and clicked in before putting the device into operation.

20

Risk of electric shock!

High voltage is applied at the terminals, which in case of direct contact
can be life-threatening. If the terminals L1/+, L2, L3/- of the device are con­nected to a live IT system, the terminals E and KE must not be disconnected
from the protective conductor (PE).

Warning of insulation monitoring devices that do not work correctly!

Connect the terminals KE and E individually to the protective earth con­ductor PE.

iso685-D-P_D00170_00_M_XXDE/06.2016

ConnectionConnection

CAUTION

CAUTION

CAUTION

CAUTION

CAUTION

Provide line protection!

According to DIN VDE 0100-430, a line protection shall be provided for the
supply voltage.

Risk of injury from sharp-edged terminals!

Risk of lacerations.
Touch the enclosure and the terminals with due care.

Ensure disconnection from the IT system!

When insulation or voltage tests are to be carried out, the device must be
isolated from the system for the test period. Otherwise the device may be
damaged.

Risk of property damage due to unprofessional installation!

If more than one insulation monitoring device is connected to a conduc­tively connected system, the system can be damaged. If several devices
are connected, the device does not function and does not signal insula­tion faults. Make sure that only one insulation monitoring device is con­nected in each conductively connected system.
The ISOMETER® is suited for use in coupled systems. For the required pa­rameter setting, refer to “Special functions for coupled IT systems” from

page 70.

Prevent measurement errors!

When an AC system being monitored contains galvanically coupled DC
circuits, take into consideration that: an insulation fault can only be de­tected correctly when the rectifier valves carry a minimum current of
>10 mA.

For UL applications:

Use 60/70 °C copper lines only!
For UL and CSA applications, the supply voltage must be protected via 5 A
fuses.

21

Risk of property damage due to unprofessional installation!

The connecting lines L1/+, L2, L3/- to the system to be monitored must be
carried out as spur lines. Inadmissible load current can result in damage
to property and personal injury. Do not apply any load current to the ter­minals.

Check proper connection!

Prior to commissioning of the installation, check that the device has been
properly connected and check the device functions. Perform a functional
test using an earth fault via a suitable resistance.

iso685-D-P_D00170_00_M_XXDE/06.2016

ConnectionConnection

WARNING

L1

L2

L3

N

PE

U

S

U

n

WARNING

L1

L2

PE

U

n

U

S

6.2 Connection to a 3(N)AC system

Risk of injury, fire and damage to property due to a short circuit!

According to DIN VDE 0100-430, devices used to protect against a short
circuit when terminals L1/+, L2 und L3/- are coupled to the IT system to be
monitored can be omitted if the wiring is carried out in such a manner as
to reduce the risk of a short circuit to a minimum. Ensure short-circuit­proof and earth-fault-proof wiring.

6.3 Connection to an AC system

Risk of injury, fire and damage to property due to a short circuit!

According to DIN VDE 0100-430, devices used to protect against a short
circuit when terminals L1/+, L2 und L3/- are coupled to the IT system to be
monitored can be omitted if the wiring is carried out in such a manner as
to reduce the risk of a short circuit to a minimum. Ensure short-circuit­proof and earth-fault-proof wiring.

22

Position the terminal cover and click it into place

Position the terminal cover and click it into place

iso685-D-P_D00170_00_M_XXDE/06.2016

ConnectionConnection

WARNING

L+

L-

PE

U

S

U

n

I1
I2
I3

A
B

M+

Q2
Q1

+

Electrical overload protection.
Auto shut-off in the event of a short
circuit and transients (resettable)

Input 1
Input 2
Input 3
RS-485 A
RS-485 B

Ground
Analogue output
Output 2
Output 1
+24 V

6.4 Connection to a DC system

Risk of injury, fire and damage to property due to a short circuit!

According to DIN VDE 0100-430, devices used to protect against a short
circuit when terminals L1/+, L2 und L3/- are coupled to the IT system to be
monitored can be omitted if the wiring is carried out in such a manner as
to reduce the risk of a short circuit to a minimum. Ensure short-circuit­proof and earth-fault-proof wiring.

6.5 Connection to the X1 interface

23

Position the terminal cover and click it into place

For systems > 690 V and with overvoltage category III a fuse for
the connection to the system to be monitored must be provided.
Recommendation: 2 A fuses.

Position the terminal cover and click it into place

iso685-D-P_D00170_00_M_XXDE/06.2016

ConnectionConnection

CAUTION

U

S

6.6 Connection to the supply voltage

Danger of damage to property due to faulty connections!

The device can be damaged if the unit is simultaneously connected to the
supply voltage via the X1 interface, and A1/+ and A2/- terminals. Do not
connect the device simultaneously via X1, and A1/+ and A2/- to different
supply voltages.

6.7 Connection to the Ethernet interface

Position the terminal cover and click it into place

24

iso685-D-P_D00170_00_M_XXDE/06.2016

ConnectionConnection

11
12
14

Relais 1

Gemeinsamer Kontakt

Schließer

21
22
24

Relais 2

Gemeinsamer Kontakt

Schließer

Öffne

6.8 Connection to the relay 1 interface (11 12 14)

Position the terminal cover and click it into place

6.9 Connection to the relay 2 interface (21 22 24)

Position the terminal cover and click it into place

25

iso685-D-P_D00170_00_M_XXDE/06.2016

ConnectionConnection

CAUTION

CAUTION

6.10 Connection to the BB bus

The BB bus is an interface that enables Bender devices to communicate with each other.
The BB bus can be used with an ISOMETER® and one or more EDS44…-S. For this purpose,
the BB bus is installed at the rear side of both devices and afterwards, both devices are
mounted next to each other on the DIN rail. For further information, refer to the quick­start guide enclosed to the BB bus PCBs.

Sensor variant devices that are additionally connected to the ISOMETER®
do not require additional supply voltage when the devices are connected
to the BB bus via X3.

6.11 Connecting the EDS to the ISOMETER®

Risk of malfunctions due to excessive locating current on sensitive
system parts!

The locating current flowing between the IT system and earth can cause
controller faults in sensitive parts of the system, such as the PLC or relay.
Ensure that the level of the locating current is compatible with the system
to be monitored.

Risk of incorrect measurement

The supplied locating current may influence other connected insulation
fault location systems. If they measure the injected locating current, the
measurement might be incorrect.

Insulation monitoring is deactivated
while the insulation fault location is active.

The EDS44…-S must be connected to the ISOMETER® via the BB bus.
The EDS44…-L must be connected to the ISOMETER® via the BS bus.

26

A maximum of two EDS44…-S can be connected to an ISOMETER®.

When the BB bus is installed, the EDS44… must always be mounted on the
right side of the ISOMETER®. In addition, for protection against short cir­cuits, a BB bus end bracket must be mounted to each first and last device
on the DIN rail featuring a BB bus.

iso685-D-P_D00170_00_M_XXDE/06.2016

Connection

6.11.1 Connection example ISOMETER® to EDS

U

n

L1

L2

L3

N

PE

U

S

A1/+ A2/-

PGH ON

X1

L1/+

IT-System

>20

23 s

R(an)

4 0 kΩ/10kΩ

to the loads to the loads

I LI

n

L2

L3/-

O

K

O K

MΩ

MΩ>20

KE E

ISOSCAN®

BB-Bus

EDS440

ON

ON

to the loads to the loads

A1/+ A2/-

EDS440

ISOSCAN®

ON

COM

SERVICE

ALARM

ALARM

EDS440

CHANNELS

1 2 3456

87

5

6

SLAVE ADDRESS

I

∆

L

7

0

I

1

∆

n

ISOSCAN®

X1

ll

iso685-D-P EDS44…-S EDS44…-L

BS-Bus

I LI

n

I

L

TEST

11109

4

5

3

6

2

7

1

8

0

9

RESET

12

3

4

2

1

MUTE

0

27

iso685-D-P_D00170_00_M_XXDE/06.2016