Model Number: HL- HLT01 Brand Name: HOLLEY INTL Key Specifications/Special Features: Meter case: meets the protection requirements set by protection class IP53 of IEC60529Series types of cases and terminal covers are availableTerminals: connection terminals are made of nickel-plated brass with features of high mechanical strength, good conductivity and corrosion-resistanceTerminal block: is injection molded of heat- and fire-resistant bakelite, voltage test link can be located inside or outside of the meter caseDriving system: employs three single electromagnet elements, all of which are mounted on the meter frame with three screws, each electromagnet element consists of voltage element, current element and connection board

Rotor: shaft is turned of high strength aluminum alloy, upper end of the shaft is pressed with a worm which is made of thermoplastic, and the lower end is embedded with a graphite bearing which is self-lubricate and friction-resistant to ensure long service life of the meter

Braking element: magnet is made of AlNiCo5 alloy and designed as U-shaped so that the effect of short time over currents upon the magnet is negligible, A temperature compensation plate, made of a special alloy, is embedded in the braking magnet, rotor speed can be adjusted largely and continuously by rotating the whole magnet

Frame: is die-cast by high quality SiAl alloy, structure is designed as W-shaped of stable property to avoid distortion, and its surface is treated with chromate to achieve reliable and durable coating against oxidation