Meter case
Two type of case are available, one is the insulating case of protective class II and the other is the weather proof case complying to IEC60529 and IP54, the material is steel, aluminum alloy, bakelite
Meter cover:
ABS aluminum, glass bakelite transparent pc
Terminal block
The terminal block is molded of bakelite, the voltage test link can be located inside or outside of the meter case, the maximum diameter of the terminal hole is 8. 5mm, the material is ABS Bakelite PC
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 ALNICO5 ally 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 SIAL 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 f 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
