NPM Series
Intelligent Power Meter
（LCD type in Chinese, LCD type, Digital type）
Intelligent
Efficient
Safe
Comprehensive
NPM Series
Intelligent Power Meter
（LCD type in Chinese, LCD type, Digital type）
NPM series intelligent power meter can realize the measurement of all electric parameters of electric load. It features modular design, high protection level, multiple display modes, standard RS485 communication interface and support for Modbus-RTU and DL/T645 communication protocols, which can be connected to all kinds of power monitoring systems and energy management systems to help customers realize data sharing and comprehensive management. It’s widely used in industrial, commercial, residential and infrastructure fields to realize intelligent control and management.
It can quickly detect anomalies and faults in the system, such as overloads and voltage fluctuations, and timely send alarm signals to reduce the potential risk of system failure.
It is capable of displaying accurate readings of a wide range of electrical parameters, including voltage, current, power and power factor, which helps to have a deeper understanding of the operating conditions of the power system.
Supports multiple communication protocols to connect with the upper-level equipment, and the operation and maintenance personnel can remotely monitor and control the status of the power system through the back-end system, so as to quickly respond to and deal with the problems.
Equipped with data recording function, which can store historical data and is convenient for long-term data analysis and trend prediction.
| Function | Parameter | |
| Power supply | Power supply range | AC/DC 85~265V |
| Power consumption | ≤5VA | |
| Measurement display | Frequency | 40~65Hz， accuracy 0.05Hz |
| Power | Active, reactive, apparent power， accuracy grade 0.5 | |
| Electricity | Four-quadrant metering, active accuracy grade C, reactive power accuracy grade 1.0 | |
| Display | LCD display in Chinese, programmable settings and the information can be switched or displayed repeatedly | |
| Input voltage | Network | Single-phase, three-phase four-wire, three-phase three-wire |
| Rated value | AC100V,400V,690V | |
| Overload | Long-term overload 1.2 times; short-term overload 2 times (60s) | |
| Power consumption | ＜0.1VA (per phase) | |
| Impedance | >1.72MΩ | |
| accuracy | True RMS measurement, accuracy grade 0.2 | |
| Input current | Rated value | AC1A,5A |
| Overload | Long-term overload 1.2 times; instantaneous load 10 times (5s) | |
| Power consumption | ＜0.1VA (per phase) | |
| Impedance | ＜20mΩ | |
| accuracy | True RMS measurement, accuracy grade 0.2 | |
| Extended functions | Communication interface | RS485 (MODBUS-RTÚ protocol or DL/T645-2007 protocol) |
| Switch quantity interface | DI passive dry contact input, DO output | |
| Pulse output | 2-channel power pulse output | |
| Transmission output | DC 4~20mA | |
| Environment | Operating environment | -25~60℃，5~95% no condensing |
| Storage environment | -40~85℃ | |
| Safety | Withstand voltage | Between input, output and power supply all greater than 2kV |
| Insulation | Input, output, power supply casing ＞100MΩ | |
| Overall dimensions | Frame | 96*96mm |
| Hole size | 91*91mm | |
| Real-time measurement parameters | Phase and line voltage | Each phase voltage, each line voltage |
| Current | Each phase current, neutral current | |
| Power | Each phase active, reactive and apparent power; three-phase total active, reactive and apparent power | |
| Power factor | Each phase power factor, three-phase total power factor | |
| Load property | Resistive, capacitive, inductive | |
| Frequency | System frequency | |
| Demand | Demand | Four-quadrant active, reactive and apparent power |
| Real-time kilowatt-hour | Active and reactive kilowatt-hour | Bi-directional, absolute and net values |
| Maximum value statistics | Maximum and minimum value statistics (with time scale) | Current, voltage, power, demand, power factor, frequency |
| Time-of-use kilowatt-hour(optional) | Time-of-use active and reactive kilowatt-hour | Three-phase bi-directional active and reactive kilowatt-hour |
| SOE | DI displacement sequence recording | Resolution of 1ms, record 64 items |
| Overlimit alarm | Alarm items | Various real-time measurement parameters |
| Power quality (optional) | Current, voltage harmonic content,distortion rate, asymmetry | Intuitive graphic coordinates inspection, 2nd-51st harmonic histogram display, 2-63 times communication reading |
| Time (optional) | Real-time clock | Year, month, day, hour, minute, second |
| Function | Parameter | |
| Power supply | Power supply range | AC/DC 85~265V |
| Power consumption | ≤5VA | |
| Measurement display | Frequency | 40~65Hz， accuracy 0.05Hz |
| Power | Active, reactive, apparent power， accuracy grade 0.5 | |
| Electricity | Four-quadrant metering, active accuracy grade C, reactive power accuracy grade 1.0 | |
| Display | LCD display in Chinese, programmable settings and the information can be switched or displayed repeatedly. | |
| Input voltage | Network | Single-phase, three-phase four-wire, three-phase three-wire |
| Rated value | AC100V,400V,690V | |
| Overload | Long-term overload 1.2 times; short-term overload 2 times (60s) | |
| Power consumption | ＜0.1VA (per phase) | |
| Impedance | >1.72MΩ | |
| accuracy | True RMS measurement, accuracy grade 0.2 | |
| Input current | Rated value | AC1A,5A |
| Overload | Long-term overload 1.2 times; instantaneous load 10 times (5s) | |
| Power consumption | ＜0.1VA (per phase) | |
| Impedance | ＜20mΩ | |
| accuracy | True RMS measurement, accuracy grade 0.2 | |
| Extended functions | Communication interface | RS485 (MODBUS-RTÚ protocol or DL/T645-2007 protocol) |
| Switch quantity interface | DI passive dry contact input, DO output | |
| Pulse output | 2-channel power pulse output | |
| Transmission output | DC 4~20mA | |
| Environment | Operating environment | -25~60℃，5~95% no condensing |
| Storage environment | -40~85℃ | |
| Safety | Withstand voltage | Between input, output and power supply all greater than 2kV |
| Insulation | Input, output, power supply casing ＞100MΩ | |
| Overall dimensions | Frame | 96*96mm; 72*72mm |
| Hole size | 91*91mm; 67*67mm | |
| Real-time measurement parameters | Phase and line voltage | Each phase voltage, each line voltage |
| Current | Each phase current, neutral current | |
| Power | Each phase active, reactive and apparent power; three-phase total active, reactive and apparent power | |
| Power factor | Each phase power factor, three-phase total power factor | |
| Load property | Resistive, capacitive, inductive | |
| Frequency | System frequency | |
| Demand | Demand | Four-quadrant active, reactive and apparent power |
| Real-time kilowatt-hour | Active and reactive kilowatt-hour | Bi-directional, absolute and net values |
| Maximum value statistics | Maximum and minimum value statistics (with time scale) | Current, voltage, power, demand, power factor, frequency |
| Time-of-use kilowatt-hour(optional) | Time-of-use active and reactive kilowatt-hour | Three-phase bi-directional active and reactive kilowatt-hour |
| SOE | DI displacement sequence recording | Resolution of 1ms, record 64 items |
| Overlimit alarm | Alarm items | Various real-time measurement parameters |
| Power quality (optional) | Current, voltage harmonic content,distortion rate, asymmetry | Intuitive graphic coordinates inspection, 2nd-51st harmonic histogram display, 2-63 times communication reading |
| Time (optional) | Real-time clock | Year, month, day, hour, minute, second |
| NPM96 | ZH | Q | 3 | nDI | R | RJ |
| Product code | Display mode | Function code | Number of phases | Additional features | Standard functions | Additional features |
| NPM96: 96-model Intelligent Power Meter |
ZH:Chinese LCD type Y:LCD type S:Digital type |
A:Current B: Voltage Q: Multi-function S:Multi-function + Harmonics T:Multi-function + Time-of-use energy W:Multi-function + Harmonics + Time-of-use energy |
3: Three-phase 1: Single-phase |
DI: Switch quantity input DO:Relay output M:Analog output P:Pulse output |
R:RS485 communication | RJ:Ethernet function 6T: 6-channel temperature measurement function R:RS485 communication |
• Multi-function includes current, voltage, active power, frequency, reactive power, apparent power, power factor, positive active energy, positive reactive energy.
• Model ZH (limited to 96 size): optional functions include 8DI, 4DO, 2M, 2R, 2P. Due to the number of ports, the maximum function is 8DI/2DO/2P/2M/2R or 8DI/4DO/2M/2R; C touch screen function.
• Model Y: The maximum function is 8DI/2DO/2P/2M/2R/RJ or 8DI/4DO/2M/2R/RJ. When 6T (6-channel temperature measurement) is selected, the maximum function is 4DI/2DO/2P/1R/6T or 4DI/4DO/1R/6T or 4DI/2DO/2M/R/6T.
• When function code A or B is selected, the maximum additional function is 4DI/2DO/1M/R.
• The number of DI can only be selected as 4DI or 8DI, and the number of DO can only be selected as 2DO or 4DO.
| NPM72 | Y | Q | 3 | nDI | R |
| Product code | Display mode | Function code | Number of phases | Additional features | FunctionStandard configuration |
| NPM72: 72-model Intelligent Power Meter |
Y:LCD type S:Digital type |
A:Current B: Voltage Q: Multi-function S:Multi-function + Harmonics T:Multi-function + Time-of-use energy W:Multi-function + Harmonics + Time-of-use energy |
3: Three-phase 1: Single-phase |
DI: Switch quantity input DO:Relay output M:Analog output P:Pulse output |
R:RS485 communication |
• Multi-function includes current, voltage, active power, frequency, reactive power, apparent power, power factor, positive active energy, positive reactive energy.
• 72 models; the maximum additional function is 4DI/2DO/1M/R/2P.
• When function code A or B is selected, the maximum additional function is 4DI/2DO/1M/R.
•The number of DI can only be selected as 4DI or 8DI, and the number of DO can only be selected as 2DO or 4DO.
Power supply：Power supply range：AC/DC 85~265V；Power consumption：≤5VA
Measurement display：Frequency：40~65Hz， accuracy 0.05Hz； Power：Active, reactive, apparent power， accuracy grade 0.5； Electricity：Four-quadrant metering, active accuracy grade C, reactive power accuracy grade 1.0； Display：LCD display in Chinese, programmable settings and the information can be switched or displayed repeatedly；
Input voltage：Network：Single-phase, three-phase four-wire, three-phase three-wire；Rated value：AC100V,400V,690V；Overload：Long-term overload 1.2 times; short-term overload 2 times (60s)；Power consumption：＜0.1VA (per phase)；Impedance：＞1.72MΩ； accuracy ：True RMS measurement, accuracy grade 0.2；
Input current：Rated value：AC1A,5A；Overload ：Long-term overload 1.2 times; instantaneous load 10 times (5s)；Power consumption ：＜0.1VA (per phase)；Impedance：＜20mΩ；； accuracy ：True RMS measurement, accuracy grade 0.2；
Extended functions：Communication interface：RS485 (MODBUS-RTÚ protocol or DL/T645-2007 protocol)； Switch quantity interface ：DI passive dry contact input, DO output；Pulse output： 2-channel power pulse output；Transmission output ： DC 4~20mA；
Environment：Operating environment ：-25~60℃，5~95% no condensing；Storage environment：-40~85℃；
Safety：Withstand voltage：Between input, output and power supply all greater than 2kV；Insulation ：Input, output, power supply casing >100MΩ；
Overall dimensions：Frame：96*96mm；Hole size：91*91mm；
Real-time measurement parameters：Phase and line voltage：Each phase voltage, each line voltage；Current：Each phase current, neutral current；Power：Each phase active, reactive and apparent power; three-phase total active, reactive and apparent power； Power factor：Each phase power factor, three-phase total power factor；Load property：Resistive, capacitive, inductive；Frequency：System frequency；
Demand：Demand：Four-quadrant active, reactive and apparent power；
Real-time kilowatt-hour：Active and reactive kilowatt-hour：Bi-directional, absolute and net values；
Maximum value statistics：Maximum and minimum value statistics (with time scale) ，Current, voltage, power, demand, power factor, frequency；
Time-of-use kilowatt-hour(optional) ：Time-of-use active and reactive kilowatt-hour，Three-phase bi-directional active and reactive kilowatt-hour；
SOE ：DI displacement sequence recording，Resolution of 1ms, record 64 items；
Overlimit alarm ：Alarm items，Various real-time measurement parameters；
Power quality (optional) ：Current, voltage harmonic content,distortion rate, asymmetry；Intuitive graphic coordinates inspection, 2nd-51st harmonic histogram display, 2-63 times communication reading；
Time (optional) ：Real-time clock：Year, month, day, hour, minute, second；
Power supply：Power supply range：AC/DC 85~265V；Power consumption：≤5VA
Measurement display：Frequency：40~65Hz， accuracy 0.05Hz； Power：Active, reactive, apparent power， accuracy grade 0.5； Electricity：Four-quadrant metering, active accuracy grade C, reactive power accuracy grade 1.0； Display：LCD display in Chinese, programmable settings and the information can be switched or displayed repeatedly.；
Input voltage：Network：Single-phase, three-phase four-wire, three-phase three-wire；Rated value：AC100V,400V,690V；Overload：Long-term overload 1.2 times; short-term overload 2 times (60s)；Power consumption：＜0.1VA (per phase)；Impedance：＞1.72MΩ； accuracy ：True RMS measurement, accuracy grade 0.2；
Input current：Rated value：AC1A,5A；Overload ：Long-term overload 1.2 times; instantaneous load 10 times (5s)；Power consumption ：＜0.1VA (per phase)；Impedance：＜20mΩ；； accuracy ：True RMS measurement, accuracy grade 0.2；
Extended functions：Communication interface：RS485 (MODBUS-RTÚ protocol or DL/T645-2007 protocol)； Switch quantity interface ：DI passive dry contact input, DO output；Pulse output： 2-channel power pulse output；Transmission output ： DC 4~20mA；
Environment：Operating environment ：-25~60℃，5~95% no condensing；Storage environment：-40~85℃；
Safety：Withstand voltage：Between input, output and power supply all greater than 2kV；Insulation ：Input, output, power supply casing >100MΩ；
Overall dimensions：Frame：96*96mm; 72*72mm；Hole size：91*91mm; 67*67mm；
Real-time measurement parameters：
Phase and line voltage：Each phase voltage, each line voltage；
Current：Each phase current, neutral current；
Power：Each phase active, reactive and apparent power; three-phase total active, reactive and apparent power；
Power factor：Each phase power factor, three-phase total power factor；
Load property：Resistive, capacitive, inductive；
Frequency：System frequency；
Demand：Demand：Four-quadrant active, reactive and apparent power；
Real-time kilowatt-hour：Active and reactive kilowatt-hour：Bi-directional, absolute and net values；
Maximum value statistics：Maximum and minimum value statistics (with time scale) ，Current, voltage, power, demand, power factor, frequency；
Time-of-use kilowatt-hour(optional) ：Time-of-use active and reactive kilowatt-hour，Three-phase bi-directional active and reactive kilowatt-hour；
SOE ：DI displacement sequence recording，Resolution of 1ms, record 64 items；
Overlimit alarm ：Alarm items，Various real-time measurement parameters；
Power quality (optional) ：Current, voltage harmonic content,distortion rate, asymmetry；Intuitive graphic coordinates inspection, 2nd-51st harmonic histogram display, 2-63 times communication reading；
Time (optional) ：Real-time clock：Year, month, day, hour, minute, second；
Product code ：NPM96：96-model Intelligent Power Meter
Display mode：ZH:Chinese LCD type ；Y:LCD type S:Digital type
Function code：A:Current；B: Voltage ；Q: Multi-function ；S:Multi-function + Harmonics；T:Multi-function + Time-of-use energy；W:Multi-function + Harmonics+分时Electricity；
Number of phases：3: Three-phase ；1: Single-phase；
Additional features：DI: Switch quantity input；DO:Relay output；M:Analog output；P:Pulse output；
Standard functions：R:RS485 communication
Additional features：RJ:Ethernet function ；6T: 6-channel temperature measurement function；R:RS485 communication；
• Multi-function includes current, voltage, active power, frequency, reactive power, apparent power, power factor, positive active energy, positive reactive energy.
• Model ZH (limited to 96 size): optional functions include 8DI, 4DO, 2M, 2R, 2P. Due to the number of ports, the maximum function is 8DI/2DO/2P/2M/2R or 8DI/4DO/2M/2R; C touch screen function.
• Model Y: The maximum function is 8DI/2DO/2P/2M/2R/RJ or 8DI/4DO/2M/2R/RJ. When 6T (6-channel temperature measurement) is selected, the maximum function is 4DI/2DO/2P/1R/6T or 4DI/4DO/1R/6T or 4DI/2DO/2M/R/6T.
•When function code A or B is selected, the maximum additional function is 4DI/2DO/1M/R.
• The number of DI can only be selected as 4DI or 8DI, and the number of DO can only be selected as 2DO or 4DO.
Product code ：NPM72：72-model Intelligent Power Meter<100us
Display mode：Y:LCD type ； S:Digital type
Function code：A:Current；B: Voltage ；Q: Multi-function ；S:Multi-function + Harmonics；T:Multi-function + Time-of-use energy；W:Multi-function + Harmonics + Time-of-use energy；
Number of phases：3: Three-phase ；1: Single-phase；
Additional features：DI: Switch quantity input；DO:Relay output；M:Analog output；P:Pulse output；
Standard functions：R:RS485 communication
• Multi-function includes current, voltage, active power, frequency, reactive power, apparent power, power factor, positive active energy, positive reactive energy.
• 72 models; the maximum additional function is 4DI/2DO/1M/R/2P.
• When function code A or B is selected, the maximum additional function is 4DI/2DO/1M/R.
•The number of DI can only be selected as 4DI or 8DI, and the number of DO can only be selected as 2DO or 4DO.