LBW 81 Functionality
The solution for large systems covering up to:
Inputs: 28 optical sensor + 7 current + 1 voltage inputs
Outputs: 5 relay + 8 MOSFET + 4 optical outputs – all freely programmable
Very short tripping time, even <1 ms
- Fast MOSFET-outputs with varistor surge protection
- Fixed cycle time 0,5 ms
- Total Fault Clearing time depends on primary side switching device
Communication
- TCP/IP (Ethernet) communication
- Modbus TCP/IP or IEC61850 with Goose commands
- Fast Disturbance Recorder sample time of 2000 Hz (0,5 ms)
- Event log included. It can also be read by a web server
Touch screen colour display with screen saver
- Multi-languages (Unicode) with ver-satile set of fonts/languages
- Operator-safe read-only front display
- All necessary information shown automatically
- Simple control logic for the display
Wide range of time and current settings
- Current input: 5 A 1 A and 2 A possible
Fully optical cables and sensors
- Safe technology does not conduct arc plasma (HV) into the relay
- If the arc destroys the optical cable, operation is still guaranteed
- Sensors can be installed into the HV live parts taking into account the adequate creepage distance
Adjustable light sensitivity for each light input (1-50 kLUX)
- Easy to install and retrofit
- Either DIN rail or door mounting
- Removable front panel frame
Power supply 24 - 48VDC (18-72VDC) with PoE or external power supply
- Redundant power supply is possible with PoE
Programming with MS Excel matrix
- Microsoft Excel file => No need for separate configuration programs
- No special training required
- All features are visible and printable
- Free user programmable names for messages events, alarms etc.
Includes optional multi-functional protection relay features.