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In addition to variable parameter measurement, the DDS238-2 ZN single phase energy meter is also ideal for measurement of single phase two-wire AC active energy with time of use (TOU) function. That is, it can be applied to measure the power flow during different periods of time, such as the peal time, mid-peak time, off-peak time, and super off-peak time.
The product offers technical requirements conforming to IEC61036 standard. Meanwhile, its data communication rules are designed as per requirements of DL/T645 or MODBUS-RTU. Owing to its good performance in stability, overload capability and power loss, the small-sized meter can be used for a long time.
Basic Function
1. The LCD display of the product comes with a backlight and backup battery against power failure.
2. Besides the measurement of bi-directional total active energy and TOU active energy, the single phase energy meter can also realize the measure of reverse active energy in the total active energy.
3. In addition to real time and date, the device also supports display of realtime voltage, current, power, power factor and frequency.
4. The meter supports measuring power flow during peak time, mid-peak time, off-peak time, and super off-peak time. According to application demands, it can be programmed as single tariff, double tariff, triple tariff and quadruple tariff modes.
5. The device can be programmed to offer 14 time intervals to facilitate TOU tariffs. The shortest time interval can be 1 minute.
6. The meter can automatically switch calendar.
7. With data save function, the product can save the daily energy consumption data for continuous 30 days and the monthly energy consumption data for continuous 12 months.
8. Infrared and RS485 communication port are available.
9. Pulse LED indicators are installed to indicate the device working status. The pulse output is available with optical coupling isolation.
10. Event log is available.
11. The single phase energy meter adopts 35mm DIN-rail installation method.
Optional Function
1. The measure and display of total forward/reverse active energy is allowable.
2. Accumulative working time display and reset energy function. Meanwhile, these two data can be reset to zero via keypad.
| Rated voltage | 110V, 120V, 220V, 230V, 240V |
| Working voltage range | 0.8~1.2Un |
| Rated current | 5(65)A, 5(30)A, 10(40)A, 5(60)A or other as required |
| Rated frequency | 50Hz or 60Hz |
| Connection mode | Direct type |
| Display | LCD |
| Accuracy class | Class 1 |
| Power consumption | <2W/10VA |
| Start current | 0.004Ib |
| Constant | 800~3200 IMP/KWh |
| Clock accuracy | <0.5s/day (23℃) |
| Pulse output | Passive pulse, pulse width is 80+5 ms |
| Communication port | RS485 port, baud rate 1200~9600 bps, default is 4800bps |
| Infrared port | |
| Executive standard | IEC62053-21, DL/T645-2007 or MODBUS-RTU |
| Working temperature | -30℃~70℃ |
| Outline dimension LXMXH | 90×35×60mm |
| Weight | Approx 0.14kg |
Wire connection
Outline dimension
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