Condition monitoring
- Provision of all voltages, currents, powers, power factors every 10/12 cycles
- Extended reactive power analysis
- Variance of system variables with time reference
Energy flow analysis
- Power mean-values with trend-analysis for preventing load-peaks
- Load profile storage with fluctuation range (min/max) per interval
- Active energy class 0.2S, Reactive energy class 0.5S (HT/LT, demand/delivery), configurable resolution
- Further mean-values and meters with selectable base quantity
Power quality analysis
- Harmonic analysis acc. IEC 61000-4-7
- Assessment of voltage and current imbalance
- Phasor and phase sequence display for connection check
- Waveform display
- Optional disturbance recorder for PQ events (voltage dip, swell, interruption) acc. IEC 61000-4-30 Ed.3 with RMS1/2 and waveform recordings
Hardware options
Up to 4 modular extensions: Analog outputs ±20mA (2/4), Relay outputs (2), Digital inputs (4) active / passive, GPS time synchronization, Fault-current monitoring (residual or earth current), temperature monitoring (Pt100, PTC), IEC61850, Profinet I/O
Communication
- Ethernet (Modbus/TCP, http/https, NTP, SFTP, SYSLOG)
- Optional: IEC61850, Profinet I/O, Modbus/RTU
- Scheduled data export to SFTP server
Security
- Flexible Role Based Access Control
- Encrypted communication via HTTPS
- Audit Log records all security related procedures, support for SYSLOG for transfer to central network monitoring server
- Client whitelist: IP address list for restricting authorized computers
- Digital firmware signature: Prevents that manipulated firmware gets into the device via update
Further features
- 4 current and 4 voltage channels with 0.1% accuracy, direct measurement or via transformers
- Measurement category 600V, CAT III (voltage), 300V,CAT III (current)
- Standard IOs: 1 digital input, 2 digital outputs
- Optional UPS (5x3 minutes)
- Data logger with16 GB data memory (option)
- Sampling rate: 18kHz
- Monitoring and alarming via limit values and monitoring functions
- For panel mounting 144x144mm
- Identical operation as devices of the PQ/CU/DM series