Minimum current is part of sensor selection
W-S01 draws operating power through CT induction. The listed load-current condition is greater than 3 A at the measuring point. Confirm the lowest current where a reading is required, including idle or intermittent operation; the nominal rating of the cabinet does not answer that question.
The documentation lists strap mounting on busbars, cable joints and switchgear contacts. Review the actual measuring point and installation constraints with the parties responsible for the equipment before planning a sample installation.
Identify the receiver and exact sensor version
A receiver such as W-D21 is a review candidate, subject to the supported sensor and firmware configuration. The open-space and in-cabinet communication figures have different conditions and should not be treated as one deployment guarantee.
W-S01F is the separately identified outdoor waterproof version. Its listed IP68 statement must not be applied to an unspecified W-S01 configuration.
Observe power-up and data availability
Agree on the reference measurement and the operating states to observe. Record minimum current, receiver location, reception and any gaps during low-current or recovery conditions. Treat temperature reporting and the host’s alarm or protection decisions as separate responsibilities.
