Control voltage circuits must be monitored for electrical safety; after all, an undetected electrical fault is as significant as unexpected system downtime and also significantly increases the fire risk. At the same time, unplanned service interventions can be expensive and time-consuming. Some power plant insurers also demand effective condition monitoring systems. The Bender condition monitoring system gives you a clear overview of all the relevant data for your system.
All kinds of power plant use generators which convert mechanical energy into electrical energy. Therefore, operating them reliably is crucial for a functional energy supply. All insulation in electrical machines is subject to ageing processes. Permanent insulation monitoring can determine the condition of the insulation of your machine. This protects you from surprises. The contacting is either direct (stator) or via collector rings (rotor). Potential problems and risks can easily be recognised. For example, the excitation system is causing high levels of harmonics which generate incorrect readings in many conventional insulation measuring devices. An ISOMETER® from Bender considers these problems during insulation measurement.
Continuous insulation monitoring of de-energised loads plays a decisive role in damage prevention. Crane systems, fire extinguisher pumps, pusher drives, etc. are often only used occasionally or in an emergency - but that is exactly when they need to work flawlessly. Bender offline ISOMETER®s permanently monitor de-energised systems, reporting insulation faults early and thus providing perfect protection against critical situations.
The VMD258 analog voltage relay monitors three phase AC systems for under and over voltages (window function) It’s internals are based on analog technology and omit the use of a microprocessor, which makes this relay suitable for nuclear and some demanding military applications. The auxiliary voltage supply can be derived from the system to be monitored. Both, system and supply are separated by a dual layer of insulation for additional internal safety and reliability. Special filter chokes dampen potential electronic noise stemming from the monitored power system. The response values for under and overvoltage and also for time response delays can be adjusted to varying levels.
| Name | Category | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| Power Quality/Measuring and monitoring relays | Product Overviews | 2.7 MB | EN | 2022/05/2525.05.2022 | |
| Product Overview ISOMETER®/ISOSCAN® | Product Overviews | 5.3 MB | EN | 2024/02/1616.02.2024 | |
| Product Overview - Residual Current Monitoring | Product Overviews | 6.3 MB | EN | 2024/10/2929.10.2024 | |
| Power Quality | Flyer | 468.0 KB | EN | 2022/12/1414.12.2022 | |
| Power Plants | Market Segment Brochures | 5.2 MB | EN | 2024/03/0606.03.2024 | |
| EDS309x | Application note | 1.4 MB | EN | 2019/05/1313.05.2019 | D00012 |
| Insulation Fault Location - Planning and Setup | Technical article | 112.4 KB | EN | 2019/05/1313.05.2019 | |
| Why the IT System is Often the Best Choice for Power Supply Systems of All Types | Technical article | 3.0 MB | EN | 2019/07/1111.07.2019 | |
| Where Residual Current Technology Meets the IT System | Technical article | 353.8 KB | EN | 2019/05/1313.05.2019 | |
| Offline Monitoring | Flyer | 1.7 MB | EN | 2019/05/1313.05.2019 | |
| Electrical Safety in Control and Auxiliary Circuits | Technical article | 632.6 KB | EN | 2023/04/2121.04.2023 |
Products
Undervoltage/overvoltage relay for monitoring three-phase AC systems (window discriminator function)
Insulation monitoring device for unearthed AC/DC control circuits
Insulation monitoring device for inverter applications and large industrial plants
Extension of the nominal voltage range of ISOMETER® iso685 series to AC 0...1150 V, DC 0...1760 V
Extension of the nominal voltage range of ISOMETER® iso685 series to AC, 3(N)AC 0...1650/0...1300 V
Extension of the nominal voltage range of ISOMETER® to AC 0...7200 V
Extension of the nominal voltage range of ISOMETER® iso685.../IR420-D64 series to AC 0...12 kV
Universal measuring device with numerous measured quantities, energy and power measurement with storage, Power Quality Monitoring, limit value monitoring with alarm forwarding
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Four-channel DC, AC and pulse current sensitive residual current monitor for earthed AC, AC/DC and DC systems
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
Insulation fault locator for localisation of insulation faults in control circuits
Insulation fault locator for localisation of insulation faults in main circuits
Portable insulation fault location systems for unearthed and earthed systems (IT and TN systems)
Insulation fault locator with 6 integrated measuring current transformers for localisation of insulation faults in control circuits
Insulation fault locator with 6 integrated measuring current transformers for localisation of insulation faults in main circuits
Undervoltage/overvoltage relay for monitoring three-phase AC systems (window discriminator function)
Insulation monitoring device for unearthed AC/DC control circuits
Insulation monitoring device for inverter applications and large industrial plants
Extension of the nominal voltage range of ISOMETER® iso685 series to AC 0...1150 V, DC 0...1760 V
Extension of the nominal voltage range of ISOMETER® iso685 series to AC, 3(N)AC 0...1650/0...1300 V
Extension of the nominal voltage range of ISOMETER® to AC 0...7200 V
Extension of the nominal voltage range of ISOMETER® iso685.../IR420-D64 series to AC 0...12 kV
Universal measuring device with numerous measured quantities, energy and power measurement with storage, Power Quality Monitoring, limit value monitoring with alarm forwarding
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Four-channel DC, AC and pulse current sensitive residual current monitor for earthed AC, AC/DC and DC systems
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.
Insulation fault locator for localisation of insulation faults in control circuits
Insulation fault locator for localisation of insulation faults in main circuits
Portable insulation fault location systems for unearthed and earthed systems (IT and TN systems)
Insulation fault locator with 6 integrated measuring current transformers for localisation of insulation faults in control circuits
Insulation fault locator with 6 integrated measuring current transformers for localisation of insulation faults in main circuits
Measuring relays and protection equipment - Part 1: Common requirements
Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
Errichten von Niederspannungsanlagen - Teil 7-731: Anforderungen für Betriebsstätten, Räume und Anlagen besonderer Art – Abgeschlossene elektrische Betriebsstätten
Electrical safety in low voltage distribution systems up to 1 000 v a.c. and 1 500 v d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems.
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems
Electrical safety in low voltage distribution systems up to 1000 V ac and 1500 V dc - Equipment for testing, measuring or monitoring of protective measures - Part 15: Functional safety requirements for insulation monitoring devices in IT systems and equipment for insulation fault location in IT systems
