Documentation and Downloads
Overview
SNA-L70 is an innovative instrument for measurement of the electrical parameters. It is particularly suitable for consumption analysis and control, with an excellent quality/price ratio.
For the version with Rogowski coils (RGW model), connections are very quick and easy, very useful for retrofitting applications on existing switchboards or for energy audit.
SNA-L70 is the ideal instrument to establish the measurement points on the plant.
The instrument can communicate through the RS-485 serial port by MODBUS RTU/ASCII protocol.
Features
- 4 DIN modules compact version
- Fully bi-directional four quadrants measurements for all energies and powers
- Main electrical parameters measured and displayed for a cost-effective consumption analysis
- Version for 1 or 5A CT, for direct connection up to 6A or 80A or for Rogowski coils
- 3 current measurement scales for Rogowski model
- Possibility to connect by PT
- MODBUS RTU/ASCII communication by RS-485 port
Technical Details
Inputs – voltage range: self-powered model: 3 x 180/310 ÷ 3 x 285/495 VAC; auxiliary power supply (AUX) model: 3 x 10/17 ÷ 3 x 285/495 VAC; current: 6A (SNA-L70-111), 80A (SNA-L70-211), 3 selectable scales, 500/4000/20000A, Rogowski coils (RGW SNA-L70-511); digital: active optoisolated, voltage range for DMD synchronisation: 80 ÷ 276 VAC
Power supply – self-powered model: 180 ÷ 285V AC, 50/60 Hz; auxiliary power supply (AUX) model: 85 ÷ 265V AC, 50/60 Hz
Power consumption – self-powered model: 3,5 VA ÷ 1 W for each phase; auxiliary power supply (AUX) model: 1,6 VA ÷ 1 W
Outputs – digital: passive optoisolated; self-powered model: 250 VAC/DC – 100 mA; auxiliary power supply (AUX) model: 27 VDC – 27 mA
Protection class – IP 51 (frontal part), IP 20 (terminals)
Operating temperature – -25°C ÷ +55°C
Display – backlighted LCD, 3 rows, 4 digits + symbols
Weight – max. 436 g
Communication interface – RS-485 optoisolated, Modbus RTU/ASCII
Accuracy – voltage: ±0,2% reading in 10% FS…FS range; current: ±0,4% reading in 5% FS…FS range; power: ±0,5% reading ±0,1% FS (PF=1); frequency: ±0,1% reading ±1 digit in 45…65 Hz range; active energy: Class 1 according to IEC/EN 62053-21; reactive energy: Class 2 according to IEC/EN 62053-23
Storage temperature – -25°C ÷ +75°C
Case dimensions – 72 x 90 x 65 mm
Case – DIN TS-35 mounting
Relative humidity – 80% max without condensation
