Connect the common test lead before you connect the live test lead. When you disconnect the
leads, disconnect the live test lead first.
Before changing functions, disconnect the test leads from the circuit under test.
Measurement Category
The clamp ammeter has a safety rating of 1000 V, CAT III and 600 V, CAT IV.
Measurement category definition
Measurement CAT I applies to measurements performed on circuits not directly connected to the
AC mains. Examples are measurements on circuits not derived from the AC mains and specially
protected (internal) mains- derived circuits.
Measurement CAT II applies to protect against transients from energy-consuming equipment
supplied from the fixed installation, such as TVs, PCs, portable tools, and other household circuits.
Measurement CAT III applies to protect against transients in equipment in fixed equipment
installations, such as distribution panels, feeders and short branch circuits, and lighting systems in
large buildings.
Measurement CAT IV applies to measurements performed at the source of the low- voltage
installation. Examples are electricity meters and measurements on primary over current protection
devices and ripple control units.
Safety Terms and Symbols
Safety Terms
Terms in this Manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in personal injury
or death.
Caution: Caution indicates the conditions or practices that could result in damage to this
product or other property.
Terms on the Product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially.
Caution: It indicates a potential damage to the instrument or other property might occur.
Safety Symbols
Symbols on the Product. The following symbol may appear on the product:
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