UM MÉTODO REPETÍVEL
Como usar
- Inspect the jaw, case and rating, then select AC or DC current as required.
- Zero a DC-capable clamp away from conductors before measuring.
- Place the jaw around one insulated conductor only and close it completely.
- Center the conductor in the jaw, keep other current-carrying wires away and wait for a stable value.
- Repeat under a known operating condition and compare running, minimum and starting current where relevant.
INTERPRETAR A MEDIÇÃO
Como interpretar o resultado
- Running current helps estimate load but does not by itself show power factor or real energy use.
- Starting current may last only fractions of a second, so peak or inrush capture can matter for motors.
- A near-zero reading around an entire cable is expected because outgoing and return currents cancel.
VERIFICAR O MÉTODO
Problemas comuns e verificações
Problema
The display shows almost zero on a working appliance.
O que fazer
Check that the jaw surrounds only one conductor, not the complete cord.
Problema
The DC reading drifts before the test.
O que fazer
Close and zero the jaw away from conductors, then repeat at the same orientation.
Problema
The meter misses a pump or compressor start.
O que fazer
Use a model with specified inrush capture and confirm that its response time suits the event.
PARAR ANTES DO PERIGO
Limite de segurança
- Do not open a panel or separate conductors unless you are qualified and the work method is safe.
- Use a meter with an independently verified category and voltage rating for the location.
- Keep fingers behind the guard and never clamp damaged insulation or exposed metal.
GUIA DE COMPRA INTELIGENTE
O que procurar ao escolher
- Jaw opening must fit the conductor while still allowing it to sit near the center.
- Choose AC-only for ordinary mains loads; choose AC/DC for batteries, solar and inverter systems.
- Resolution at low current can matter more than an extremely high maximum range.
Tipos de instrumento
Ideal para: Household circuits, motors and appliances on mains power.
Ideal para: Solar, batteries, vehicles and inverter systems.
Ideal para: Qualified investigation of very small imbalance currents.
Funções comuns
AC or AC/DC currentTrue RMSInrush captureLow-current resolutionMultimeter probe inputs
Pelo que vale a pena pagar mais
- Verified CAT rating and safe construction
- Reliable inrush capture for motors
- Good low-current resolution for standby loads
Pelo que normalmente não vale pagar mais
- A 1000 A range for ordinary home circuits
- DC capability if you will only test AC loads
- Wireless logging for occasional spot checks