GMW Hall-effect current sensor CPCO-2000-77 open-loop clamp-on AC/DC probe 2000 A high-current 77 mm aperture

PROBEMART offers GMW CPCO/CPC clamp-on (split-core) Hall-effect current sensors, capable of measuring DC to 50 kHz, 0 to 16000 A AC/DC current, with an overall measurement accuracy of 1%; they are mainly used for current testing of electric vehicles, motors, photovoltaic inverters, variable-frequency drives, battery charging and discharging, electromagnetic actuators, etc. They can usually be used with various power analyzers, recorders, data loggers, and oscilloscopes for testing.

Hall-effect current transformers measure the DC component based on the magnetic balance Hall effect principle and the AC component based on the magnetic induction principle: when a control current C is passed into the control current terminals of the Hall element and a magnetic field with magnetic flux density B is applied in the direction normal to the plane of the Hall element, a potential VH is generated in the direction perpendicular to both the current and the magnetic field (i.e., between the Hall output terminals), called the Hall potential, whose magnitude is proportional to the control current. Hall-effect current probes are particularly suitable for high-precision AC+DC measurement scenarios.

Main features of GMW Hall-effect current probes:

• Full-scale ranges: ±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 0–3 V;4–20 mA, 12 mA ± 8 mA

Typical applications of Hall-effect current transformers:

• 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

• Current measurement and control for electromagnetic actuators

• 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