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WFET-1000 Electrical Load Management Instrument

General introduction:
WFET-1000 electrical load management instrument is an important part of modernization management, which achieves the user's electric energy information acquisition including AC analog acquisition, electric energy meter data acquisition, switching value and pulse data acquisition. In addition, our data logger realizes electric energy metering of equipment condition and power quality monitoring, customer electrical load and energy monitoring, as well as management and transmission of the acquired data.

Items Indicators
Standard Q/GDW 1374.1-2013, Q/GDW 1375.1-2013, Q/GDW 129-2005, 
Q/CSG 1209007-2015, Q/CSG 00009006-2013
Communication protocol Uplink: Q/GDW 1376.1-2013 , DL/T698.45, Q/CSG 11109004-2013
Downlink: DL/T645-1997 DL/T645-2007, Red Phase, Landis+Gyr
Communication mode Remote: GPRS/CDMA/3G/4G, and Ethernet is standardly configured
Local: 2 channel RS-485, 1 channel far infrared, 1 channel RS-232
Power supply Three-phase three-wire system, 3×100V±30%
Three-phase four-wire system, 3×220/380V±30%, 3×57.7/100V±30% work normally with two-phase missing
Working environment Normal working temperature: -40℃~+75℃; relative humidity: 10%~95%; air pressure: 66~106kPa
Overall power consumption Non-transmission state overall active power consumption ≤5W apparent power consumption ≤10VA
Input interface 2~4 channel teleindication/ pulse input passive contact access mode
Output interface Active, reactive pulse output; 2~4 channel telecontrol e contact output (normally open normally closed contacts are provided on each channel),1 channel normally open alarm contact.
Relay adopts brand long-life relay (open and close 100 million times), the capacity is 250V/5A
telecontrol/alarm maloperation rate: ≤10-9, telecontrol/alarm rejection rate:≤10-6
Storage capacity 128MB FLASH
Metering accuracy class Active: class 0.5s, reactive: class 2.0
Clock Clock error ≤0.5s/d, power-off continuous operation for 10 years
Reliability MTBF≥7.6×104h
Structure length×width×height:290mm×180mm×95mm

Main features
1. The working power supply range is wide, reaching up to ±30% of the rated voltage.
2. High reliability.
3. A large number of electric meters(8~16) can be connected.
4. The electric meter protocol library is rich, which supports common electric meters at home and abroad and permits protocol customization

WILLFAR as a professional electrical load management instrument manufacturer, mainly manufacture meter data management instrument, there are main products like electrical power data logger, data concentrator, data collector, power quality analyzer, applied for precision data logging, electric power monitoring, data management and data transmission. To serve daily life much better, WILLFAR company also provides custom electrical meter data management and energy management solutions in client demands.

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