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  • Professional Manufacturer Of Energy meter,Electricity meter,Kilowatt hour meter etc.

Digital meter

    Name:DD862 single phase kwh meter

  • Digital meter

  • The DD862 single phase meter is designed to meet the IEC62053-21,IEC62052-11 standards for both indoor and outdoor installations. The meter with mechanical construction complying BS5685 is also available. With accuracy of class 2, it measures active energy in single-phase two-wire or three-wire alternating current power grids. Connection is direct or by instrument transformers. The average service life(MTTF)is 10 years and the maximum overload capacity is 500%lb.
  • Construction
  • Meter case
  • Two types of cases are available One is the insulating case of protective-classⅡ and the other is the weather-proof case complying to IEC60529 and Ip54.
  • Terminal block
  • The terminal block is molded of Bakelite . The voltage test link can be located inside or out-side of the meter case. The maximum diameter of the terminal hole is 8.5mm.
  • Driving element
  • The driving element consists of a voltage element and a current element, both of which are fixed to the frame. The voltage element has a low load adjustment mechanism, and the current element has an inductive load adjustment mechanism.
  • Rotor
  • The rotor shaft is made of aluminum alloy with a small hole in the upper end for storing lubrication and for fitting a brass bearing The worm is turned of brass, and is acid-cleaned or nickel-plated. The worm and shaft can be detached.
  • Braking element
  • The magnet is made of AINiCo5 alloy and designed as U-shaped so that the effect of short-time over current upon the magnet is negligible. The full load error can be fine controlled by adjustment mechanism.
  • Frame
  • The frame is die-casted by high-quality Al alloy of stable property to avoid distortion. The application of static spray-painting on the surface prevents the frame from oxidation.
  • Upper bearing
  • The pin is made of high-quality abrasion-proof stainless steel and is embedded on the brass pin base.
  • Lower bearing
  • Both double jewel bearing and magnetic bearing are available.
  • Register
  • The DD862 meter with direct-reading cyclometer type register is available.
  • The register is self-located and is mounted on the frame by one screw. Fixing with two screws is also available but needs to be manually adjusted. There are two types of gears available: brass gears and self-lubricating plastic gears.
  • Technical data
  • 1 Meter type DD862
    2 Applicable Standards IEC60521、IEC514
    3 Accuracy Class 2 (according to IEC60521)
    4 Average service life (MTTF) 10years
    5 Basic current (lb)   A 1.5  2.5  3  5  10  10  15  20  30
    6 Maximum current (Imax)  A 6  10  12  20  40  50  60  80  100
    7 Rating current of transformer  In 5A          Direct connection
    8 Reference voltage   Un 110V,120V,220V,230V,240V
    9 Reference frequency   fn 50Hz,60Hz
    10 Power losses in voltage circuit at Un 50Hz:  1.2W/6VA,   60Hz:  1.0W/5VA
    11 Power losses in current circuit at 50Hz   Un  Ib <0.6VA
    12 Non-running with no-load 0.8~1.1Un
    13 Starting current 0.5%lb
    14 Mean temperature
    Form0.1lb to Imax at unity PF
    Form 0.2lb to Imax at unity 0.5lagging    		   <0.08%/℃
    <0.12%/℃
    15 Insulation level:
    Withstanding A.C. voltage for 50Az, 1min
    Withstanding impulse voltage 1.2/50us    		 >2kV(when   Bakelite   base>4kV)
    >6KV(when  Bakelite    base>8kV)
    16 Rated load speed at unity PF, lb 13.2r/min
    17 Rated load torque at unity PF, lb 450uNm
    18 Weight of rotor 24g
    19 Weight of meter     1.5~1.6kg
    20 Meter base  Steel, Aluminum alloy, Bakelite
    21 Meter cover   ABS, Aluminum, Glass, Bakelite,
    transparent PC
    22 Terminal cover   ABS, Bakelite, PC
    23 Register Cyclometer single, Unidirectional,
    Jumping , Metal
    24 Option Reverse running stopper, pulse
    sampling device 
  • Typical connection diagram
  • energy meter
  • Outline & installation size
  • energy meter