LINETRAXX® VMD258
- Pure analogue technology for safety applications
- For nominal system voltages up to 690 V
- Undervoltage and overvoltage monitoring for 3 AC systems
The voltage relay VMD258 monitors three-phase AC systems for undervoltage and overvoltage (window function). Neutral conductor connection is not required, therefore it is suitable for 3AC systems.
The voltage to supply the electronics is taken from the system to be monitored. The supply of the electronics, the relays and the connection for the external energy storage device are isolated from the system by means of double isolation. Special input transformers attenuate interferences from the system.
The response values for undervoltage and overvoltage as well as the response delays are continuously adjustable.
Replaces the SUR35x series.
- Features
- Applications
- Accessories
- Ordering information
- Downloads
- Undervoltage and overvoltage monitoring for 3AC systems
- No separate supply voltage required
- Separate alarm relays for undervoltage and overvoltage with two potential-free changeover contacts
- Adjustable response value: 0.7…0.95 x Un/1.05…1.3 x Un
- Nominal system voltages: 3AC 690/500/480/440/400/230/110/100 V
- Adjustable response delay: 0…5 s
- LEDs for operation, overvoltage, undervoltage
- Monitoring of the power supply of machines and electrical installations
- Monitoring of loads
- Switching electrical systems on and off at a certain voltage level
- Monitoring of stand-by and emergency supply systems
- Supply voltage monitoring of portable loads
Optional accessories for LINETRAXX® VMD258
| Type designation | Art. No. |
|---|---|
| Additional mounting clips (screw mounting) | B98060008 |
| External energy storage ES258 | B93010068 |
Variants of LINETRAXX® VMD258
| Type | Connection | Art. No. |
|---|---|---|
| VMD258 3AC 100 V | 3AC, 100 V | B93010060 |
| VMD258 3AC 110 V | 3AC, 110 V | B93010061 |
| VMD258 3AC 230 V | 3AC, 230 V | B93010062 |
| VMD258 3AC 400 V | 3AC, 400 V | B93010063 |
| VMD258 3AC 440 V | 3AC, 440 V | B93010064 |
| VMD258 3AC 480 V | 3AC, 480 V | B93010065 |
| VMD258 3AC 500 V | 3AC, 500 V | B93010066 |
| VMD258 3AC 690 V | 3AC, 690 V | B93010067 |
Downloads for LINETRAXX® VMD258
| Category | Prodotto | Language | Size | Download |
|---|