Insulation monitoring
Bender

Insulation monitoring

Our core competence is electrical safety

Insulation monitoring devices (also known as insulation monitors) permanently monitor the insulation resistance of IT systems (unearthed systems) and emit a message if a response value is not reached.


ISOMETER - Insulation monitoring devices

ISOSCAN - Equipment for insulation fault location EDS


Take advantage of our 1A service:

  1. Planning and conceptual design
  2. Device selection and project planning
  3. Commissioning and testing
  4. Operation and maintenance
  5. Expansion and modernization


Main features Applications
  • Optimized maintenance of systems and machines
  • Localization of faulty current paths
  • Remote diagnostics via Internet/Ethernet
  • Monitor areas at risk of fire
  • Avoid cost-intensive system downtimes
  • Providing technological support for investment protection
  • Protection of high-availability systems
  • Permanently monitor systems even when they are at a standstill
  • Increased accident safety in small and medium-sized systems


Type W device version with increased shock and vibration resistance

  • AC, DC or AC/DC main circuits
  • AC/DC main circuits with directly connected direct current components such as power converters, Inverters, controlled drives
  • UPS systems, Battery networks
  • Heaters with phase angle control systems
  • Systems with switching power supplies
  • IT systems with high leakage capacitances



Insulation monitoring in systems with a low insulation level


Application example: Induction furnaces are devices and systems with which metals can be heated and melted by inductive heating. The energy is transferred by means of a current-carrying coil. This heating is made possible by the induction of an eddy current in a metallic conductor, the workpiece to be heated.


This generally results in a very low insulation resistance in the range of several ohms (Ω) to several kilo ohms (kΩ). For this reason, reliable insulation monitoring is very important. It must be able to measure low insulation values at relatively high operating voltages and raise an alarm to prevent dangerous operating situations.


Iso685 High system availability in main circuits

Article no.
Type
LCD graphic display
Built-in control element
Remote control unit
Coupled networks
Test current generator
Panel mounting
DIN top-hat rail
Bender alternative
B.91067010
ISOMETER iso685-D
ISOMETER iso685-D
X
X
-
-
-
-
X
B.91067110 / iso685-S
B.91067210
ISOMETER iso685-S + FP200
ISOMETER iso685-S + FP200
-
-
X
-
-
X
-
B.91067110 / iso685-S
B.91067020
ISOMETER iso685-D-B
ISOMETER iso685-D-B
X
X
-
X
-
-
X
B.91067120 / iso685-S-B
B.91067220
ISOMETER iso685-S-B + FP200
ISOMETER iso685-S-B + FP200
-
-
X
X
-
X
-
B.91067120 / iso685-S-B
B.91067030
ISOMETER iso685-D-P
X
X
-
X
X
-
X
B.91067130 / iso685-S-P
B.91067230
ISOMETER iso685-S-P + FP200
ISOMETER iso685-S-P + FP200
-
-
X
X
X
X
-
B.91067130 / iso685-S-P

Alternative iso685 sensor variants

  • Device version iso685-S without display and without operating unit
  • Can be used in combination with FP200 and is operated indirectly
  • Parameterization can be carried out via the web browser or a COM465
B.91067110
iso685-S insulation monitoring device
iso685-S insulation monitoring device
Alternative to iso685-D, without display
B.91067110W
iso685W-S insulation monitoring device
iso685W-S insulation monitoring device
Alternative to iso685W-D, without display
B.91067120
iso685-S-B insulation monitoring device
iso685-S-B insulation monitoring device
Alternative to iso685-D-B, without display
B.91067120W
iso685W-S-B Insulation monitoring device
iso685W-S-B Insulation monitoring device
Alternative to iso685W-D-B, without display
B.91067130
iso685-S-P insulation monitoring device
iso685-S-P insulation monitoring device
Alternative to iso685-D-P, without display
B.91067130W
iso685W-S-P insulation monitoring device
iso685W-S-P insulation monitoring device
Alternative to iso685W-D-P, without display
B.91067904
FP200 front panel for isometer iso685-S
FP200 front panel for isometer iso685-S
Option for sensor variant
B.91067904W
FP200W front panel for isometer iso685W-S
FP200W front panel for isometer iso685W-S
Option for sensor variant

IRDH275/375/575 High system availability in main circuits

Article no.
Type
Main circuit
Control circuit
Coupled networks
Coupled IT systems
Test current generator
Nominal mains voltage
Supply voltage
Panel mounting
DIN top-hat rail
B.91065100
ISOMETER IRDH275-435
X
-
X
-
-
AC, 3(N)AC 0...793 V DC 0...650 V
AC 88...264 V/DC 77...286 V
-
X
B.91065104
ISOMETER IRDH275-427
X
-
X
-
-
AC, 3(N)AC 0...793 V DC 0...650 V
DC 19.2...72 V
-
X
B.91065101
ISOMETER IRDH275B-435
X
-
X
X
-
AC, 3(N)AC 0...793 V DC 0...650 V
AC 88...264 V/DC 77...286 V
-
X
B.91065105
ISOMETER IRDH275B-42
X
-
X
X
-
AC, 3(N)AC 0...793 V DC 0...650 V
DC 19.2...72 V
-
X
B.91065000
ISOMETER IRDH375-435
X
-
X
-
-
AC, 3(N)AC 0...690 V DC 0...565 V
AC 88...264 V/DC 77...286 V
X
-
B.91065002
ISOMETER IRDH375-427
X
-
X
-
-
AC, 3(N)AC 0...690 V DC 0...565 V
DC 19.2...72 V
X
-
B.91065500
ISOMETER IRDH575B1-435
X
X
X
-
X
AC, 3(N)AC 20...575 V DC 20...575 V
AC 88...264 V/DC 77...286 V
X
-

IR420/425 Optimum operational reliability in control and auxiliary circuits

Article no.
Type
Main circuit
Control circuit
Tensioning system
Reporting contacts
LCD display
Nominal mains voltage
Supply voltage
DIN top-hat rail
B.71016409
ISOMETER IR420-D4-1
ISOMETER IR420-D4-1
-
X
AC
2 changers
X
AC 0...300 V, 42...460 Hz
AC 16...72 V, 42...460 Hz/DC 9.6...94 V
X
B.71016405
ISOMETER IR420-D4-2
ISOMETER IR420-D4-2
-
X
AC
2 changers
X
AC 0...300 V, 42...460 Hz
AC/DC 70...300 V/DC 42...460 Hz
X
B.71036402
ISOMETER IR425-D4-2
ISOMETER IR425-D4-2
-
X
AC/DC
2 changers
X
AC/DC 0...300 V, 15...460 Hz
AC/DC 70...300 V/DC 15...460 Hz

Detecting faults in photovoltaics in good time

Article no.
Type
Main circuit
Control circuit
Tensioning system
Application
Interface
Nominal mains voltage
Supply voltage
DIN top-hat rail
Special feature
B.91065133W
ISOMETER isoPV-335 + AGH-PV
ISOMETER isoPV-335 + AGH-PV
-
X
AC/DC
Photovoltaics
RS485
AC 0...793 V/DC 0...1100 V
AC 88...264 V/DC 77...286 V
X
Robust design
B.71036303
ISOMETER isoPV-425 + AGH420
ISOMETER isoPV-425 + AGH420
X
-
AC/DC
Photovoltaics
RS485
AC 0...690 V / DC 0...1000 V
AC 100...240 V / DC 24...240 V
X
B.91065604
ISOMETER isoPV1685P-425
 ISOMETER isoPV1685P-425
X
-
DC
Photovoltaics
RS485
DC 0...1500 V
DC 18...30 V
-
Test current generator

Special applications for switched-off consumers and mobile power generators / generators

Article no.
Type
Main circuit
Control circuit
Tensioning system
Application
Interface
Nominal mains voltage
Supply voltage
DIN top-hat rail
Special feature
B.71016305
ISOMETER IR423-D4-2
ISOMETER IR423-D4-2
X
-
AC
Mobile generators
-
AC 0...300 V
AC/DC 70...300 V, 30...460 Hz
X
B.71036325
ISOMETER isoGEN423-D4-4
ISOMETER isoGEN423-D4-4
X
-
AC/DC
Mobile generators
RS-485/BMS, Modbus RTU, isoData
3(N)AC, AC 0...400 V/DC 0...400 V
AC 100...240 V/DC 24...240 V
X
Generators application
B.91067024
ISOMETER isoNAV685-D-B
ISOMETER isoNAV685-D-B
X
-
AC
Switched off systems
Web server/Modbus TCP/BCOM (RJ45)
offline
AC/DC 24...240 V
X
Offline monitoring

Special applications in electric mobility EV

Article no.
Type
Main circuit
Control circuit
Tensioning system
Modbus
Nominal mains voltage
Supply voltage
Undervoltage detection
Assembly
B.91068138V4
ISOMETER IR155-3203
ISOMETER IR155-3203
X
-
DC
-
AC 0...1000 V/DC 0...1000 V
DC 10...36 V
300 V
Screw fastening
B.91068139V4
ISOMETER IR155-3204
ISOMETER IR155-3204
X
-
DC
-
AC 0...1000 V/DC 0...1000 V
DC 10...36 V
0 V (inactive)
Screw fastening
B.91068139CV4
ISOMETER IR155-3204
ISOMETER IR155-3204
X
-
DC
-
AC 0...1000 V/DC 0...1000 V
DC 10...36 V
0 to 500 V
Screw fastening
B.71036401
ISOMETER isoEV425-D4 with AGH420
X
-
DC
RTU
AC 0...793 V, 15...460 Hz/DC 0...1100 V
AC 100...240 V, 47...63 Hz/DC 24...240 V
-
DIN top-hat rail

Special applications for rail and rolling stock

Article no.
Type
Main circuit
Control circuit
Tensioning system
Nominal mains voltage
Supply voltage
Web server
Modbus
Assembly
B.71037000W
ISOMETER isoRW425-D4W-4
ISOMETER isoRW425-D4W-4
X
-
AC/DC
3(N)AC, AC/DC 0...400 V
AC 100...240 V/DC 24...240 V
-
RTU
DIN top-hat rail
B.91067012W
ISOMETER isoRW685W-D
X
X
AC/DC
AC 0...690 V, 1...460 Hz/DC 0...1000 V
AC 24...240 V, 50...400 Hz/DC 24...240 V
X
TCP
DIN top-hat rail

ISOMETER with locating current injector for insulation fault location
ISOSCAN for insulation fault location

Article no.
Type
Main circuit
Control circuit
Auxiliary circuit
Tensioning system
Application
Interface
Nominal mains voltage
Supply voltage
DIN top-hat rail
Special feature
B.91065500
ISOMETER IRDH575B1-435
X
-
-
AC/DC
Insulation fault location
BMS
AC 20...575 V, DC 20...575 V
AC 88...264 V/DC 77...286 V
Panel mounting

We can provide you with any available monitoring device on request.
Please do not hesitate to contact us for further clarification.

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