The three-phase four wire guide rail electronic energy meter is designed with advanced energy metering chip and mature software technology. The meter meets the relevant technical requirements of GB/T17215.321-2008 Class 1 and Class 2 （China standard）Static AC Active Energy Meters; It can directly or indirectly accurately measure the power consumption of three-phase loads. The 8-bit LCD display shows the functional power consumption. It has the characteristics of good reliability, small size, light weight, beautiful appearance, advanced technology, 35mm DIN standard rail installation, etc.; it also has good anti electromagnetic interference, low self-consumption and power saving, high precision, high overload, high stability, electricity theft prevention, and long life.
The meter is applicable to measuring three-phase AC active electric energy with rated frequency of 50Hz or 60Hz. It is used for fixed installation indoors, and is applicable to the environment temperature not exceeding - 25~+55 ℃, the relative humidity not exceeding 95%, and the air does not contain corrosive gas and avoid the impact of dust, mold, salt fog, condensation, insects, etc.
1. Main technical parameters
1.1 Error limit:
Single phase instrument and multi-phase instrument with balanced load
Current value |
Power factor |
Percent error limit (%) |
DC access |
Connected through transformer | Level 1 | Level 2 |
0.05Ib≤I≤0.1Ib | 0.02In≤I≤0.05In | 1 | ±1.5 | ±2.5 |
0.1Ib≤I≤Imax | 0.05In≤I≤ Imax | 1 | ±1.0 | ±2.0 |
0.1Ib≤I＜0.2Ib | 0.05In≤I＜0.1In | 0.5（inductive） 0.8（capacitive） | ±1.5 ±1.5 | ±2.5 - |
0.2Ib≤I≤Imax | 0.1In≤I≤ Imax | 0.5（inductive） 0.8（capacitive） | ±1.0 ±1.0 | ±2.0 - |
When users have special requirements | 0.25（inductive） 0.5（capacitive） | ±3.5 ±2.5 | - - |
0.2Ib≤I≤Ib | 0.1In≤I≤In |
Multiphase instrument with single-phase load, voltage line plus balanced multi-phase voltage
Current value |
Power factor |
Percent error limit (%) |
DC access |
Connected through transformer |
Level 1 | Level 2 |
0.1Ib≤I≤Imax | 0.05In≤I≤ Imax | 1 | ±2.0 | ±3.0 |
0.2Ib≤I≤Imax | 0.1In≤I≤ Imax | 0.5（inductive） | ±2.0 | ±3.0 |
1.2 Starting
At rated voltage, rated frequency and Under the condition of COS Φ= 1, when the load current of the electric energy meter is the value specified in the following table, the electric energy meter can start and continuously measure electric energy.
Instrument type |
Accuracy Level 1 |
Accuracy Level 2 |
Power factor |
Direct access | 0.004 Ib | 0.005 Ib | 1 |
Connected through transformer | 0.002 In | 0.003 In | 1 |
1.3 Latency
When there is no current in the current circuit of the electric energy meter and the voltage applied to the voltage circuit is 115% of the rated value, the test output of the electric energy meter shall not generate more than one pulse.
1.4 Insulation performance
All lines of the electric energy meter can withstand the waveform of 1.2//50μ s. between the shells. The pulse voltage with a peak value of 6KV shall be tested for 10 times continuously under different polarities without arc discharge or breakdown. All lines of the electric energy meter can withstand an AC voltage of 2KV of 50Hz actual sinusoidal waveform between the meter case or the accessible metal parts outside the meter case, and the test lasts for one minute without breakdown.
1.5 Working voltage limit: 70%~130% Ub
1.6 Power consumption: ≤ 2W and 10VA
1.7 Display: LCD display
1.8 Data storage: after power failure, the data shall be stored for at least 10 years. Specifications of electric energy meter.
