Railway signalling and pole-mounted switch systems are crucial for safe and smooth operation of the whole railway system. The train driver relies on functioning signals. Bender can detect faults in the cabling quickly and cost-effectively during operation using an ISOMETER® insulation monitoring device and locate them automatically by means of insulation fault location systems. Downtimes are minimised and maintenance can be planned.
The points are controlled from the signal box, normally automatically on an electric/electronic basis. If an insulation fault occurs in the connection between the signal box and the points, this can be detected and reported very early by means of a Bender ISOMETER®. Thereby, downtimes can be minimised and the condition of the insulation can be continuously monitored.
Failure of the points into winter leads to unnecessary interruptions to operation and delays. Monitoring the controllers of points heating for faults, energy quality, energy requirements and load currents using measuring and monitoring relays enables smooth operation without disconnection. While the system is out of operation, monitoring is carried out as continuous offline measurement.
Railway crossings are made safe by technical equipment. The train triggers the gates to open or close by driving over sensors. Failure of this safety equipment would bring the train to a stop or block crossing traffic. Securing with fault current monitoring devices or insulation monitoring devices helps avoid these problems.
The automatic train control system (LZB) is a railway system which transfers drive parameters or drive orders to the train driver based on which they are to drive their vehicles. It also allows the monitoring of the driving behaviour of trains, especially at maximum speed. If necessary, it intervenes into the vehicle controller to initiate braking in order to avoid excessive speed. Automatic train control system can also be used for fully automated control of the driving and braking processes of trains. There is inductive data transfer between the vehicle and the travel route by means of a pair of cables laid between the rails (known as the line conductors). The power for each section is supplied via an unearthed AC 750 V system which is monitored using special ISOMETER®s. The power supply of the ETCS along the tracks is also set up as an unearthed system and requires continuous insulation monitoring.
Emergency and safety lighting at passenger train stations as well as track field illumination are operated via unearthed power supplies. Insulation monitoring devices continuously monitor the condition of the insulation. Earthed system parts can be monitored for faults using residual current monitors. Switching to a redundant power supply can be done via the ATICS® product.
| 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 | 8.0 MB | EN | 2025/04/0202.04.2025 | |
| Power Quality | Flyer | 468.0 KB | EN | 2022/12/1414.12.2022 | |
| ATICS® Informationleaflet | Product Brochures | 743.7 KB | EN | 2019/05/1313.05.2019 | D00046, D00080 |
| Railway Technology | Market Segment Brochures | 5.5 MB | EN | 2023/11/1313.11.2023 | |
| 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 | |
| Predict and Protect - Signal Power Fault Detection Systems | Market Segment Brochures | 1.7 MB | EN | 2019/05/1313.05.2019 | |
| New Ideas for Using Data from Insulation Monitoring Devices in the Railway Field | Technical article | 339.3 KB | EN | 2019/05/1313.05.2019 | |
| A Giant on its Way Towards the Future | Technical article | 111.8 KB | EN | 2019/05/1313.05.2019 |
Products
Insulation monitoring device for inverter applications and large industrial plants
Insulation monitoring device tailored to the requirements of railway rolling stock applications
Insulation monitoring device for railway applications up to AC/DC 440 V
Insulation monitoring device for unearthed AC/DC control circuits
Insulation monitoring device for unearthed AC control circuits
Insulation fault locator for localisation of insulation faults in main circuits
Insulation fault locator 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
Insulation fault locator with 6 integrated measuring current transformers for localisation of insulation faults in control circuits
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
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
AC/DC sensitive residual current monitor (type B) with 6 integrated measuring current transformers
Residual current monitor for TN and TT systems (AC and pulsed DC currents)
Automatic transfer switching devices with monitoring functions for unearthed safety power supplies
Current monitoring devices for monitoring 3AC currents by means of measuring current transformers
Insulation monitoring device for inverter applications and large industrial plants
Insulation monitoring device tailored to the requirements of railway rolling stock applications
Insulation monitoring device for railway applications up to AC/DC 440 V
Insulation monitoring device for unearthed AC/DC control circuits
Insulation monitoring device for unearthed AC control circuits
Insulation fault locator for localisation of insulation faults in main circuits
Insulation fault locator 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
Insulation fault locator with 6 integrated measuring current transformers for localisation of insulation faults in control circuits
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
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
AC/DC sensitive residual current monitor (type B) with 6 integrated measuring current transformers
Residual current monitor for TN and TT systems (AC and pulsed DC currents)
Automatic transfer switching devices with monitoring functions for unearthed safety power supplies
Current monitoring devices for monitoring 3AC currents by means of measuring current transformers
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
Lighting applications - Emergency lighting
Richtlinie DB - Beleuchtung, Starkstromanlagen und Brandschutz
Richtlinie DB - Gleisfeldbeleuchtung
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
Safety of machinery - Electrical equipment of machines - Part 1: General requirements
