GMW Hall-effect current sensor CPCO-12000-77 open-loop clamp-on AC/DC probe 12000 A high-current 77 mm aperture

PROBEMART provides the GMW CPCO/CPC clamp-on (split-core) Hall-effect current sensor, which can measure AC and DC currents from DC to 50 kHz and 0 to 16000 A, with an overall measurement accuracy of 1%. It is mainly used for current testing of electric vehicles, motors, photovoltaic inverters, variable-frequency drives, battery charging and discharging, electromagnetic actuators, etc. It can usually be used with various power analyzers, recorders, data acquisition units, and oscilloscopes for testing.

The Hall-effect current transformer measures the DC component based on the magnetic balance Hall effect principle and the AC component based on the magnetic induction principle: when a current C is fed into the control-current terminal of the Hall element and a magnetic field with magnetic flux density B is applied along the normal direction of the Hall element plane, a potential VH is generated in the direction perpendicular to both the current and the magnetic field (i.e., between the Hall output terminals); this is called the Hall potential, and its magnitude is proportional to the control current. The Hall-effect current probe is particularly suitable for high-precision AC+DC measurement scenarios.

Main features of the GMW Hall-effect current probe:

• Full-scale range: ±500 A, ±1 kA, ±2 kA, ±4 kA, ±8 kA, ±12 kA, or ±16 kA

• Accuracy:

• Bandwidth: DC to 40 kHz

• RMS noise:

• Aperture: 77 mm or 160 mm

• Operating temperature: -40°C to +85°C

• Output signal options: single-ended 5.0 V ±5.0 V;bipolar 0.0 V ±5.0 V;bipolar 0.0 V ±10 V;RMS value 0-3 V;4-20 mA, 12 mA ±8 mA

Typical applications of the Hall-effect current transformer:

• Welding current measurement and control

• Electrolysis, electroplating, and electrowinning current measurement and control

• Electric furnace current measurement and control

• Electric heater current measurement and control

• Generator current measurement, control, and protection

• Variable-speed motor drive current measurement, control, and protection

• Battery charge/discharge current measurement, control, and safety testing

• Electromagnetic actuator current measurement and control

• Electromagnet current measurement and control

• PV inverter DC/AC current measurement and control

• Short-circuit current testing

• Electronic fuse current input

• Non-intercepting measurement of ion or electron beam current

• Power quality, AC current, and harmonic content

• Electrical system condition monitoring