- Sensors
- Temperature monitor TW 50/60
- Temperature monitor TW 03 S – Type 8432
- Electronic temperature monitor – Type 8433
- PT100 thermo sensor – Type 8433
- Electronic thermostat – Type 8434
- PT100 thermosensor – Type 8434
- Electronic thermostat in cable form – Type 8434
- PT100 thermosensor 2-wire and 3-wire cable connection – Type 8434
- Non-contact magnetic switch – Type 8441
- Current sensor – Type 8442
- Non-contact overhead wire contact TLC 4 – Type 8474
- Precipitation sensor – Type 8921
- Precipitation sensor – Type 8921
- Potential monitoring/-protection
- Mobile adjustment and test device – Type 8204
- Potential monitoring devices
- Display unit – Type 8540
- Voltage Monitors
- Voltage Signal Relays
- Potential Protection Devices
- for floating grounds with voltage monitoring – Type 8900
- for floating grounds with voltage monitoring – Type 8900
- for floating grounds with current control – Type 8901
- with low voltage limiter, surge arrester current monitoring and remote clearing function – Type 8901
- with SIEMENS low voltage limiter and surge arrester – Type 8901
- for open earthing with current monitoring and remote clearing – Type 8901
- for floating grounds with current control and LED indicator – Type 8901
- Voltage fuse – Type 8961
- Voltage Limiting Device – Type 8962
- Over Voltage Protector Type PSNP – Type 8963
- R/C combination – Type 8970
- Earthing device – Type 8971
- Special relays
- Switching amplifier
- Temperature monitoring – Type 8435-PT100
- Evaluation unit – Type KAG2
- Evaluation unit – Type 8480
- Evaluation unit – Type KAV1
- Switching amplifier – Type 8582
- Switching amplifier – Type 8582DCW
- Isolating switching amplifier – Type 8583
- Switching amplifier – Type 8586
- Mobile Test Device for non-contact overhead contact line switch
- Cable Monitoring Devices
- Points Heating Systems
- Current Monitoring/-supply
- Cabinets
- Accessories
- Individual Solutions
Description
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.)
Due to the special design the big voltage tolerances occurring during rail operation are unproblematic for the voltage signal relay of the type 8591.
This relay stands out due to its fully encapsulated construction. It is connected to the contact line and the return conductor or the voltage source via firmly connected cable ends.
The output contacts (1 or 2 change-over contacts) are encapsulated hermetically and therefore protected against corrosion.
The encapsulation offers the best possible protection of the output side against surges of atmospheric origin. This also applies to the separation of the contacts, change-over contact against change-over contact.
According to section 60 of VDE 0100 concerning auxiliary circuits short-circuit protection is not required for a voltage signal relay if the connecting cables have been laid in a short-circuit proof way.
If the coil current exceeds 5 A, the current path inside the relay is interrupted.
In the so-called “big design” the customer can fit additional terminal blocks in the terminal housing of the relay. Assembly costs can be saved with the so-called “double design”, which includes two relays in one housing.
The output contacts are designed as reed contacts. Under no circumstances shall the limit values be exceeded for this kind of contact. Particularly the capacitive inrush currents and the lamp loads have to be considered (see information sheet concerning reed contacts).
Information about further relays is found in our complete brochure folder.
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