This manual provides safety warnings, operating instructions, and technical specifications for the Kyoritsu KEW 8121, 8122, 8122WP, and 8123 clamp sensors.
The document serves as an instruction manual for the Kyoritsu Clamp Sensor Series, covering models KEW 8121, KEW 8122, KEW 8122WP, and KEW 8123. It outlines essential safety warnings regarding electrical potential limits and proper handling of transformer jaws to prevent injury or damage.
| Rated current (KEW 8121) | AC100Arms(141Apeak) |
|---|---|
| Rated current (KEW 8122/8122WP) | AC500Arms(707Apeak) |
| Rated current (KEW 8123) | AC1000Arms(1414Apeak) |
| Accuracy (Input: sine wave) | ±2.0%rdg±0.3mV(50/60Hz) |
| Operating temperature range | 0 ~ 40ºC, relative humidity: 85% or less (no condensation) |
| Withstand voltage | AC3470Vrms (50/60Hz)for 5 sec. between Jaw and enclosure |
| Conductor Size (KEW 8123) | Approx.55mm in diameter (max.) |
Never make measurement on a circuit where the electrical potential exceeds AC300V when using KEW 8121.
The maximum conductor size for KEW 8123 is approximately 55mm in diameter.
The instrument has been designed and tested according to IEC 61010: Safety requirements for Electronic Measuring apparatus.