Hioki 3280-70F Clampmeter 4200A AC

Hioki 3280-70F AC Clamp Meter with CT6280 Flexible Sensor

The 3280-70F is supplied as a set with the CT6280 AC Flexible Current Sensor — a 130mm diameter flexible Rogowski coil that wraps around conductors too large for a conventional rigid jaw. With a measurement range up to 4200A AC, it handles the largest cable cross-sections and busbar arrangements found in main distribution switchgear, factory main incomers and substations.

Key Features

• Supplied as a set: 3280-70F meter + CT6280 AC Flexible Current Sensor
• AC current measurement up to 4200A via CT6280 flexible sensor
• Also works as a standard clamp meter with its own Φ33mm jaw (up to 1000A)
• CT6280 flexible sensor: Φ130mm (5.1in) diameter, wraps around large busbars
• Mean-value (average rectified) measurement — accurate on standard sinusoidal loads
• AC voltage measurement up to 600V
• CAT III 300V safety rating
• Auto range, data hold

About the CT6280 Flexible Current Sensor

The CT6280 is a Rogowski coil sensor that wraps flexibly around large conductors, multiple conductors and oddly-shaped busbars where a rigid jaw clamp cannot fit. It measures AC current up to 4200A and connects to the 3280-70F meter head. The combination makes it the most versatile large-current measurement solution for main incomer and feeder testing.

Applications

Main distribution board incomer current measurement, factory transformer secondary current testing, large motor starting current measurement, substation feeder current monitoring and energy auditing on large industrial installations.