Advanced software and high-performance hardware design,SMT technique.Single phase multi-rate KWH meter,power meter,energy meter
Port: Shanghai/Ningbo
Minimum Order Quantity: 100 Piece/Pieces
Supply Ability: 20000 Piece/Pieces per Month
Payment Terms: L/C,T/T,Western Union,MoneyGram
Contact SupplierPackaging Detail: Standard export carton
Delivery Detail: 7-15 days after order confirmation
Single phase electronic multi-rate kilowatt-hour meter,power meter,energy meter
DDSF870 Single phase electronic multi-rate kilowatt-hour meter is one product of those multi-rate meter series,which is developed according with national related standards.this meter adopt advanced software design, high-performance hardware design and SMT manufacturing technique, so that it is ideal product for Electricity Board to measure electricity time sharing. Though RS485 communication network or hand-hold unit, the meter can do point to point Protocol or one trunk with multi-branch Protocol,which all conform to the requirements of DL/T645-1997.besides, physical interface layer, communications link and metering performance are all according to the requirements of DL/T645-1997GB/T17215-2002. This meter has LCD and LED display,which can be selected. It also has many advantages,such as long service lifehigh accuracygood overloadlow consume and small volume.
2. Specifications and types
Specifications and types | Reference voltageV | Rated frequencyHz | Rated current A | Meter constantimp/kw.h |
DDSF870 | 220 | 50 | 1.5(6) --- 20(80) | As shown in nameplate |
3.Technical parameter
3.1 Electrical required
Accuracy ratingclass 1.0,class 2.0
Normal working voltage0.9Un~1.1Un
Limiting working voltage0.7Un~1.3Un
Voltage consumptionactive power≤2.0W,apparent power ≤5VA
Current consumptionactive power≤1.8VA
3.2 Environment requirements
Normal working temperature25-+60(three phase)
Limiting working voltage40+70
Transportation and Storage temperature45+70
Relative humidity (RH): less than 95%
3.3 Working parameter
Clock accuracy≤0.5S/d (23)
Battery voltage3.6V
Battery capacity≥1.2AH
Battery life10 years
Optical coupling output interface: pulse width80±20ms
Designed life10 years
Standard: GB/T17215-2002,DL/T645-1997
4. Main function
4.1 Measurement function:can measure positive and reversed direction active energy.
4.2 Measured by different time segment
Can set up four rates(tine,peak,level,off-peak),eight period of time,the minimal time interval should be 5 minute
Can save the rates of 12 months including this month
Date of automatic meter reading is at 0~23 on 1~28
4.3 Measured by different time segment in reversed direction
Power direction can be identify automatically, reversed power can be saved automatically, at the same time it can be accumulated into positive power counter, automatically record reversed power, reversed starting time and reversed runtime
Have function of reversed pulse testing and indication
4.4 Communications
Have one RS485 communications port and one infrared communications port
RS485 communication port and internal meter electrical isolation,it also have lightning protection circuit.
Two directions of modulating infrared communications port
4.6 Other function
Adopt two-stage protection of password and Code Switch, when reading meter automatically recording last time program and programing times
Adopt clock circuit of hardware
Backup battery adopts imported green environmental disposable
Can set meter number, office number, period of time,rate,date,password, the content of display in a cycle and starting power.
Have function of marking backup battery detecting low voltage indication ,meter state of hardware. state of clock,meter direction.state of check.state of present.
Mark of can be read though RS485 or handheld PC
When press blue botton on the box,we can check electricity parameter customers have chose.