Application:
The prepayment watt-hour meter is a new kind product by our company, which is based on excellent pre-paid special chip which has multifunction, such as electrical energy calculation, load control and users information management. The product setting charge and adjusting load state in the electric network.
Specifications:
Accuracy |
Class 1.0 |
Rated Voltage |
240V |
Op. Voltage |
70% Un~120%Un |
Nominated Current |
5 (20) A, 10 (60) A, 15(60)A, 20(80)A |
Frequency Range |
50 Hz ¡À 5% |
LED or LCD Display |
4-digital LED,
6-digital LCD |
Meter Constant |
-imp/kWh (according with the tender requirements) |
Operating Temp. |
-25¡æ¡«+55¡æ |
Average Relative humidity |
< 75% |
Storage/Transport Temp. |
-50¡æ¡«+70¡æ |
Power Loss |
Voltage circuit:¡Ü 2W, 10VA |
Surge Test |
4 kV |
Current circuit:¡Ü 2.5VA |
ESD |
8 kV |
Impulse Test |
6 kV |
Dimension (mm) |
168¡Á110¡Á61 |
Starting Current |
0.4% Ib |
Weight |
0.65Kg |
Features:
- Large LCD display with comprehensive icons
- Optimum prepay management under proprietary system software
- Configuration card for parameter initialization / update
- User card for credit transfer, reissue mechanism if missed
- Retrieve card for meter retrofit
- Huge ROM card for utility field survey
- Advanced anti -tamper features, Compartment wise tamper logging with snap shot:
- Immunity to mobile phone disturbance
- Cover open detection
- Current reversal
- Earth load
- Advanced anti- fraud of IC card port attack,
- IC card contacts shorten by metal sheet
- Electrical spark (like motor starter)/ ESD attack on IC card contacts;
- AC/DC or high frequency signal injection on IC card contacts;
- 400Vac attack on IC card contacts
- Pre-alarm when out of credit, LCD flash display, Beeping (optional)
- High-reliable magnetic latching relay, ON/OFF 5000 times with Imax current;
- Cut-off user supply for overload protection, resume after 5 minutes (programmable)
- Highly security transaction upon encrypted data & password mechanism
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