Model Number

DD17/28

DD28/17 meter is applicable for single phase active energy measurement ,it is designed to meet IEC60521standard for indoor and ourtdoor installation
1.case : base , steel sheet ,weather proof sheet
meter cover is made of ABS material ,flame resistant ,in black color ,with glass window ,meter cover can also be made of transparent glass weather proof .
2. terminal block is made of phenolic resin ,flame resistant ,in black color voltage link can be inside the meter base or outside the meter base ,terminal are made of brass having two screws for tighening the exterminal cable
3.terminal block cover : short steel cover rubber underside the cover assures insulation between the cover and the terminal block
4.driving element :
current electromagnet ,the overload compensating set mounted on the laminated lilicon steel core assures the excellent load curve performance
voltage electromagnet ,the design of voltage electromagnet permits to withstand the impulse voltage of 6 kv
5.braking element :braking element is made of monopolar magnet its adjustment range conforms to requirement of IEC60521
6.frame:the meter frame is made of aluminum alloy with sufficient strength ,it is painted for effective protection against corrosion
7.moving element : worm gear on the rotor shaft is made of brass or optionally plastic one
anti creeping pin is fitted to the rotor shaft to prevent running with no load
anti reverse device can be mounted in the meter if is is required
upper bearing :with excellent friction resistant property the upper bearing pin is of polished stainless steel to guide the rotation of the disc
lower bearing :double jewel bearing ,magnetic beraring with metal enclosure , magnetic bearing with transparent enclosure the bearing enclosure is made of transparent polycarbonate
8.register is of cyclometer type with frame made of aluminum alloy ,digit drums are made of polycarbonate ,UV radiation resistant ,the resgister is fixed on the meter frame by two screws it is adjustable to assure good mesh of worm with the rotor shaft ,unidirectional register is available
9.voltage :110v 220v 230v 240v
10.currnet :5(10)A 10(20)A 20(40)A 30(60)A 40(80)A