Model Number: HL-LD68
Brand Name: HOLLEY INTL
Key Specifications/Special Features:
Construction:Meter case: two types of the cases (protective-class I and II) are availableTerminal block: molded of bakelite, voltage test link can be located inside or outside of meter caseDriving element: consists of voltage element and current element, both of which are fixed on steel frame of fine magnetic conductivity, load curve compensation device, load and inductive load adjustment mechanismsRotor: worm is an un-detachable part of rotor shaft so that mesh between worm and shaft improved, both ends of shaft are embedded with graphite bearing to ensure long service life of meter
Braking element: magnet is made of AlNiCo5 alloy and designed as U-shaped so that effect of short time over currents upon magnet is negligible
Frame: made of steel, surface is treated by negative electrophoresis to achieve excellent corrosion-proof
Upper bearing: consists of guide pin and brass sleeve, fixed into meter frame by one screw
Lower bearing: both Al-Ni-Co alloy and detachable hard ferrite magnetic bearings are available
Register: adapts heat-/abrasion-proof plastic gears and bearings, no lubrication of bearings is needed during the service life, drum is made of polycarbonate, pyrographed and printed by UV-resistant alumina to ensure non-depigmentation
Technical data:
- Meter type: HLD68 (LD68)
- Applicable standards: IEC60521 and BS5685
- Accuracy: class 2 (according to IEC60521)
- Average service life (MTTF): 25 years
- Basic current (maximum current): 1. 5, 2.5, 5, 10, 15, 20 and 30A
- Maximum current: 6, 10, 20, 30, 40, 60, 80 and 100A
- Rating current of transformer in 5A direct connection
- Reference voltage: 110, 120, 220, 230 and 240V