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Digital Power meter with RS-485
    Publish time 2017-08-10 08:42    

1. energy meter measure kWh consumption, voltage, current, power, power factor, Hz. 
2. Multi-tariff energy 
3. RS485/ Modbus

Company profile:

ChongQing TongYang Electrical Equipment Co.,ltd(CTEC) is specialized in small and meduim hydropower Projectsthe team has professional knowledge,rich practices&expreience in this especial area more than 10 years.CTEC main study ,design ,product ,install,debug intergated automatic control cabinet,power plant computer(mobile phone) monitoring,governors.hydroturbine,electrical control cabinet.

Technical data:


1. energy meter measure kWh consumption, voltage, current, power, power factor, Hz. 
2. Multi-tariff energy 
3. RS485/ Modbus

PMAC905 Digital Power Meter with Profibus Features:

1. Suit for LV/ HV voltage system

2. CT and PT programmable

3. kWh accuracy class 0.5S

4. Panel size: 96 x 96mm

5. Pluggable terminals, easy to install

6. Large high-contrast LCD

7. User-friendly and easy handing

8. Two pulse output

9. Password protect

PMAC905 Digital Power Meter with Profibus Basic Function: 

Measures and display real-time parameters:

1. Voltage—Ua, Ub, Uc, Uab, Ubc,  Uca,

2. Current—Ia, Ib, Ic, In

3. Active power – Pa, Pb, Pc, ∑P

4. Reactive power –Qa, Qb, Qc, ∑Q

5. Apparent power –Sa, Sb, Sc, ∑Q

6. Power factor—PFa, PFb, PFc, ∑PF

7. Frequency

8. Active energy—4 quadrant kWh 

9. Reactive energy– 4 quadrant kvarh 

PMAC905 Digital Power Meter with Profibus Optional Function:

1. Statistics of multi-tariff energy: 8 periods of time, 4 different tariff

2. Record historical energy value: (kWh & kvarh) data of the past 31 days/ 12 months

3. One RS485 communication port: support Modbus-RTU protocol


Parameter Accuracy
Voltage 0.2%
Current 0.2%
Power 0.5%
Power factor 0.5%
Frequency 0.01
Active energy 0.5%
Reactive energy 2.0%




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