Panel type multifunction power meter

ac panel three phase multifunction energy meter spm72 right side.png

ac panel three phase multifunction energy meter spm72 front .png

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AC Panel Three Phase Multifunction Energy Meter SPM72

1.Full Electrical Parameter Measurement: Three-phase voltage, current, active power, reactive power, apparent power, power factor, frequency, voltage/current phase angle, voltage/current average value.

2.Fundamental wave measurement: three-phase fundamental wave voltage, fundamental wave current, fundamental wave active power, fundamental wave reactive power, fundamental wave apparent power,fundamental wave power factor.

3.Energy Metering: Bi-directional energy, phase energy, four-quadrant energy; Optional time-of-use (TOU) energy.

4.Demand Function: Real-time demand, predictive demand; Optional daily maximum demand, monthly maximum demand.

5.Power Quality (Optional): 63rd harmonic analysis, voltage/current harmonic content, THD, TOHD, TEHD, zero-sequence/negative-sequence unbalance, current K-factor, voltage crest factor, current TDD.

6.Data Logging (Optional): 10-year/12-month historical energy, daily max demand, monthly max demand, electrical parameter max/min values.

7.Event Logging (Optional): 200 event records.

8.Phase Sequence Adjustment: Software-adjustable CT phase sequence.

9.Alarms: 15 types of alarms including phase overvoltage/undervoltage, line overvoltage/undervoltage, current overcurrent/undercurrent, frequency over/under, power over, phase loss, phase sequence error, digital input 1-4 action, etc.

10.Up to 4 optional active or passive digital inputs.Optional 2 relay outputs.

11.Standard 1 optical pulse output.

12.Optional 1 electrical pulse output.

13.Up to 2 optional RS485 communication ports.

14.Optional 2 channels of 4~20mA DC analog output.

15.Optional 4 channels of temperature measurement.

16.Rated current configurable as 1A/5A.

17.Universal for high/low voltage, compatible with 3×57.7/100V and 3×220/380V.

Main Documents

SPM72 Maintenance/User

Product Introduction

SPM72, the updated version of SPM32, offers the following main functions

The SPM72 Three-Phase Multifunction Power Meter is primarily suitable for high and low voltage distribution systems below 650kV, such as distribution cabinets and switchgear. The meter comes standard with an RS485 industrial bus, supporting Modbus RTU/DLT645 communication protocols for networked management, enabling data acquisition, meter reading, and automatic control by backend systems. The product performance meets the relevant technical requirements for Class D active energy in GB/T 17215.321-2021 and Class 0.5S reactive energy in GB/T 17215.324-2022.

Product Selection

SPM72 - ① - ② - ③
①Model Code (Mandatory,select only one)
E1	1x RS485
E2	2x Active DI + 4x Temperature Input + 1x RS485
E3	2x Active DI + 2x Relay Output + 2x RS485
E7	4x Active DI + 2x Relay Output + 1x RS485,TOU Energy Metering,Historical Energy Storage,Max/Min Values,Event Logging,Demand Functions
E8	4x Passive DI + 2x Relay Output + 1x RS485,TOU Energy Metering,Historical Energy Storage,Max/Min Values,Event Logging,Demand Functions
E9	3x Active DI + 2x Analog Output + 1x RS485
②Model Code (Optional)
Q	Power Quality Functions (Harmonic Analysis,Unbalance,Voltage Crest Factor,Current K-factor,Current TDD Function)
③Model Code (Optional,default is 0.5S Class Active Energy)
L02	0.2S Class Accuracy (Class D) Note 1:Not compatible with L02 option when rated current is 1A.

Specification

Parameter	Range / Performance	Accuracy	Resolution
Rated Operating Parameters
Power Supply	Supply Voltage:AC 85~265V or DC 100~300V Power Consumption:≤2W
Rated Current	5A 、1A
Nominal Voltage	3x57.7/100V 3x220/380V 40Hz~65Hz
Active DI Input	Rated Operation 220V,Open <88V,Closed >154V
Relay Output Contact Rating	AC 250V/5A or DC 30V/5A
Measurement Parameters
Direct Voltage Input	Phase V:10V-400V Line V:10V~690V	0.1%	0.01V
Primary Voltage	Max 650KV	--
Direct Current Input	5mA~6.5A	0.1% (L02) 0.2% (L05)	0.001A
Primary Current	Max 50000A	--
Frequency	40~65Hz	0.1%	0.01Hz
Power Factor	-1.000 ~ +1.000	0.2%	0.001
Active Energy	0~9999999.999kWh	Class D (L02) Class C (L05)	0.001kWh
Reactive Energy	0~9999999.999kvarh	0.5 Class (L02) 1 Class (L05)	0.001kvarh
Active Power	-2,147,483,648W~2,147,483,647W	0.2% (L02) 0.5% (L05)	0.1W
Reactive Power	-2,147,483,648var~2,147,483,647var	0.5% (L02) 1% (L05)	0.1var
Apparent Power	0~4,294,967,295VA	0.2% (L02) 0.5% (L05)	0.1VA
Unbalance	0%~100%	0.5%
Harmonic Ratio	0%~100%	Class B
Analog Output	4~20mA,max load 500Ω	±0.5%FS (@25℃)
Environmental Conditions
Normal Operating Temp.	-25℃ ~ +60℃
Extreme Operating Temp.	-40℃ ~ +75℃
Storage Temp.	-40℃ ~ +75℃
Relative Humidity	5% ~ 95% (non-condensing)
Atmospheric Pressure	70 kPa-106 kPa
Altitude	<3000m
Enclosure Protection	IP50 (Front Panel),IP20 (Rear Cover)
Test Items	Standard Basis	Performance / Severity Level
Insulation Performance
Insulation Resistance	GB/T 13729-2019	≥100MΩ
Power Frequency Withstand Voltage	GB/T 4793.1-2007 (IEC 61010.1:2001)	3000VAC
Impulse Voltage	GB/T 4793.1-2007 (IEC 61010.1:2001)	6000V
EMC Performance
ESD Immunity Test	GB/T 17626.2-2018	Level 4
RF EM Field Rad. Immunity Test	GB/T 17626.3-2023	Level 3
Electrical Fast Transient/Burst Immunity Test	GB/T 17626.4-2018	Level 4
Surge Immunity Test	GB/T 17626.5-2019	Level 4
Conducted RF Immunity Test	GB/T 17626.6-2017	Level 3
EM Emission Limits	GB 4824-2019 (CISPR11:2024)	Class B
Voltage Dips,Sags,Interruptions Immunity Test	GB/T 17626.11-2023	Compliant