General
The DT862 three-phase four-wire meter is designed to meet the latest IEC60521 standards for measuring active energy in three-phase four-wire alternating current power grids. Connection is direct or by instrument transformers. It has an average service life of 10 years and maximum overload capacity of 600%Ib.

1. Meter case
It meets the protection requirements set by protection class IP53 of IEC60529...
2. Terminals & Terminal block
Terminals:
The connection terminals are made of nickel-plated brass with features of high mechanical strength, good conductivity and corrosion-resistance.
Terminal block:
The terminal block is injection molded of heat- and fire-resistant Bakelite.
3. Rotor
The rotor shaft is turned of high strength aluminum alloy...

Technical data
1 Meter type: DT862
2 Standards: IEC60521. IEC514
3 Accuracy(according to IEC60521)
Transformer operated: Class 1
Direct connected: Class 2
4 Average service life 10 years
Basic current (Maximum current)A: 1.5(6) 3(6) 5(20) 5(40) 10(60) 15(60) 20(80)
5 Rating current of transformer in 5A direct connection
6 Reference voltage Un 3X57.7/100V, 3X220/380V, 3X230/400V
7 Reference frequency: 50 Hz. 60 Hz
8 Non-running with no-load: 0.9~1.1Un
9 Starting current: 0.4%Ib 0.5%Ib
10 Mean temperature coefficient: From 0.1Ib to Imax at unity PF From 0.2Ib to Imax at unity 0.5 lagging <0.08%/0C<0.12%/0C
11 Insulation level: Withstand A. C. Voltage for 50 Hz, 1min Withstand impulse voltage 1.2/50us >2 kV