Crompton 078-31L, 078 Sealed AC - Varmeter

The Crompton Instruments Switchboard series of AC wattmeters and varmeters incorporate a DC moving coil, pivot and jewel indicator with a micro-circuit watt transducer PCB to read power on single or three-phase systems. The most frequently selected wattmeter scale marking for common Current and voltage Transformer s are listed on the following pages. In addition, these instruments may be supplied with zero-left or center-zero scale.

Crompton Switchboard Meters offers two case types; models 007 and 078

• Model 007 is a one piece flame retardant polycarbonate moulding with a black matte finished bezel area, and a specially contoured window to minimize reflection from adjacent light sources.
• Model 078 is high shock hermetically sealed and all models have heavy gauge pressed steel cases.They have a die-cast bezel and a projecting moulded toughened glass window, which incorporates a gas tight zero adjuster.

Features

• 250° Linear Scale
• AC Instruments with True RMS Circuit
• Rugged Pivot & Jewel Movement
• IP54 Front
• c-UL-us Certification