Working-Platform Voltage Monitoring
This device was developed especially for the monitoring of catenary sections in depots (workshops), and serves to monitor the switching status of isolator S1 (see wiring diagram) and visually display and / or trigger a control function.
Mobile test device for VLD’s Type 8204
This type 8204 mobile tester was specially developed to measure voltage-limiting devices (VLD’s) with a spark gap (e.g. ESN No. 250150). It can be thus used to test all types of VLD elements with a response level of up to DC 600V (earthing switches, VLD’s, Zener diodes, varistors, etc.).
Potential monitoring device Type 8521 as per DIN EN 50122 part 1 / VDE 0115 part 3
As protection from dangerous body currents generated from contact voltages/tapping voltages, maximum voltages have been stipulated depending on the effect time. On exceeding the maximum voltages and effect time, safety measures such as short circuit or switching off have to be initiated.
Potential monitoring device Type 8535
The potential monitoring device Type 8535 monitors potential differences, e.g. between the negative and the grounding conductors in grounded DC railway systems or between the neutral and the grounding conductors to protect against inadmissibly high and dangerous contact voltage.
Adjustable Potential Monitor Type 8537
The adjustable potential monitoring system HR-8537 is used to monitor voltage differences between 2 points (touch potential monitoring; AC and/or DC). The device functions without auxiliary voltage. When the monitored voltage difference is exceeded, an output contact is initiated for further processing.
Adjustable Potential Monitor Type 8537 02
The adjustable potential monitoring system HR-8537 is used to monitor voltage differences between 2 points (touch potential monitoring; DC and/or AC). The device functions without auxiliary voltage. When the monitored voltage difference is exceeded, an output contact is initiated for further processing.
Monitoring device Type 8538 for insulated rail joints, overvoltage protectors, etc.
The potential monitoring device Type 8538 operates as a remote reporting device and monitors the electrical isolation of insulated rail joints, overvoltage protectors and similar devices depending on the voltage.
Monitoring device Type 8538 for insulated rail joints, overvoltage protectors, etc.
The potential monitoring device Type 8538 operates as a remote reporting device and monitors the electrical isolation of insulated rail joints, overvoltage protectors and similar devices depending on the voltage.
Display unit Type 8540 for potential monitoring unit type 8538
The display unit type 8540 serves as a supplement to the potential monitoring system type 8538. With the help of the display unit, the current potential difference that is present at the measuring inputs Kl.12, 14 can be displayed.
Voltage Monitor Type 8539 Standard version
The ESN-8539 voltage monitor is normally used to report or activate switching processes when the pre-set voltage threshold is fallen short of.
Voltage Monitor Type 8539 supply voltage up to DC 110V
The ESN-8539 voltage monitor is normally used to report or activate switching processes when the pre-set voltage threshold is fallen short of.
Voltage monitoring unit Type 8539 EKS version
The voltage monitoring unit part number 230144 is used in earthing short-circuit units to measure the potential difference between the earthing systems applied and to trigger the switching process if the set voltage threshold is exceeded.
Voltage Monitor Type 8539 two limits
The voltage monitor type 8539, part no. 23018x two limits can independently monitor. Due to the high input impedance (about 2 Mohm) and the high over-voltage strength, the device is such as to monitor the voltage of contact line systems.
Voltage monitoring device Type 8539 / DC 1500V
The voltage monitoring device of the type 8539 with the article numbers 23014x and 23016x has been developed exclusively for the voltage level DC 1500 V. All relevant clearances and creepage distances have been so dimensioned that the test voltage amounts to DC 9.5 kV for all measurements.
Voltage monitoring device Type 8539 / DC 1500V
The voltage monitoring device of the type 8539 with the article numbers 23014x and 23016x has been developed exclusively for the voltage level DC 1500 V. All relevant clearances and creepage distances have been so dimensioned that the test voltage amounts to DC 9.5 kV for all measurements.
Voltage Signal Relay Type 8591 insulation group F acc. to DIN 57115
The voltage signal relay of the type 8591 has been developed particularly for the detection and signalling of the voltage states of DC traction power supply systems. (Auxiliary supply is not needed for the operation of this device.)
Voltage Indicator Relay Type 8591 with magnetic schield
The voltage indicator relay type 8591 was developed specially for the recording and indication of voltages in direct voltage supply equipment in railway installations. It requires no auxiliary supply for operation.
Voltage Signaling Relay Type 8591 for 1500 V DC
The voltage signaling relay of the type 8591 has been developed particularly for the detection and signalling of the voltage states of DC traction power supply systems. (Auxiliary supply is not needed for the operation of this device.)
Voltage signaling relay Type 8591 Double relay design for DC1500 V
The voltage signaling relay of the type 8591 has been developed particularly for the detection and signalling of the voltage states of DC traction power supply systems. (Auxiliary supply is not needed for the operation of this device.)
Voltage Indicator Relay Type 8592 (DC 600/750V)
The type 8592 voltage indicator relay was developed especially for using in switching units (indoor units). Experience in the construction of voltage indicator relays and a commitment to implementation of this knowledge in development led to a small and compact relay.
Potential Protection Device Type 8900 for floating grounds with voltage monitoring (part no. 240100)
Special problems are encountered in DC-operated railways when it comes to contact and corrosion protection. On the one hand, electrical DC should be kept out of contact with the ground as far as possible to avoid corrosion, on the other hand strict electrical separation means that dangerous voltage potentials can arise between the two areas.
Potential Protection Device Type 8900 for floating grounds with voltage monitoring (part no. 240128)
Special problems are encountered in DC-operated railways when it comes to contact and corrosion protection. On the one hand, electrical DC should be kept out of contact with the ground as far as possible to avoid corrosion, on the other hand strict electrical separation means that dangerous voltage potentials can arise between the two areas
Potential Protection Device Type 8901 for floating grounds with current control
Protection from contact voltage and corrosion present a particular problem in the case of DC powered railway vehicles. On the one hand, direct electrical currents should not be connected to ground in order to prevent corrosion, but on the other hand, strict electrical separation can result in hazardous voltage potentials between the two areas.
Potential protection unit Type 8901 with low voltage limiter, surge arrester current monitoring and remote clearing function
There are special problems with railways operating with DC power concerning contact and anti-corrosion protection and overvoltage protection (e.g. lightning). On the one hand, an attempt is made to prevent the DC currents from connecting to earth as far as possible so as to avoid corrosion, while on the other hand there is the problem that dangerous voltage potentials can arise between the two areas if a strict electrical separation is made.
Potential protection unit Type 8901 with SIEMENS low voltage limiter and surge arrester
There are special problems with railways operating with DC power concerning contact and anti-corrosion protection and overvoltage protection (e.g. lightning).
Potential protection unit Type 8901 for open earthing with current monitoring and remote clearing
There are special problems with railways operating with DC power concerning contact and anti-corrosion protection. On the one hand, an attempt is made to prevent the DC currents from connecting to earth as far as possible so as to avoid corrosion, while on the other hand there is the problem that dangerous voltage potentials can arise between the two areas if a strict electrical separation is made.
Potential Protection Device Type 8901 for floating grounds with current control and LED indicator
Protection from contact voltage and corrosion present a particular problem in the case of DC powered railway vehicles. On the one hand, direct electrical currents should not be connected to ground in order to prevent corrosion, but on the other hand, strict electrical separation can result in hazardous voltage potentials between the two areas.
Voltage fuse Type 8961
The type 8961 voltage fuse is suitable for limiting contact voltages in direct current powered rail operations. This product is a class 1 VLD in accordance to EN 50526-2:2014. In conformity with DIN EN 50122-1:2011-09 (VDE 0115-3:2011-09), the threshold of the voltage fuse type 8961 is < DC 150V (see technical data).
Voltage Limiting Device Type 8962
The voltage limiting device (LVD) type 8962 is suitable for the potential limitation in the direct current rail operations. The sparkover voltages are 200V to 600V (depending on the fuse). The housing is suitable for voltage fuse links with / without spark gap (diameter 24mm, height 16mm).
Over Voltage Protector Type PSNP 8963
The overvoltage protector PSNP is a combination of a mechanical switching element with manual reset and a bipolar thyristor stage. The PSNP is used like a voltage-limiting device to protect against inadmissibly high contact voltages.
R/C combination Type 8970 for residual current devices(RCD) in DC railway power systems, in accordance with VDV 509 10/08
The triggering behaviour of the RCD protective switches can be affected by possible compensation DC currents and the earth conductor (PE) and neutral conductor (N) placed at risk.
Earthing device Type 8971 for telecommunication cables as per VÖV 04.04.1 / supplement
In order to comply with the maximum values for the voltage that are specified in VDE 0228, suitable measures are to be taken concerning the earthing of telecommunication cables, both below ground and above ground.
Information Sheet concerning Reed Contacts
Contrary to inductive loads the inrush currents are increased in case of capacitive loads and lamp loads. These inrush currents can cause failures – up to contact welding.