Użu u prekawzjonijiet ta ' morsa Ammeter
Clamp type Ammeter (clamp meter for short) is an instrument integrating current transformer and Ammeter. Its working principle is the same as that of measuring current current with current transformer. Clamp type meter is a combination of current transformer Current and Ammeter. After tightening the wrench, the core of current can can be opened, and the current current transformer can be opened, and the wire for measuring current can pass through the opening gap of the core without being cut. Wara tħoll il wrench, the core can be closed, The conductor passing through the core wire of the circuit under test becomes the primary coil of the current coil of the current transformer, and the current is indott in the secondary coil through the current. Therefore, the Ammeter connected to the secondary coil has the function of indicing - measuring the current of the circuit under test.
Clamp type Ammeter is divided into high voltage and low voltage, li is jintuża biex direttament miżura il kurrent in il-linja mingħajr skonnettjar il-linja. Its użu is kif ġej:
1. When using a high-voltage clamp type meter, please pay attention to the voltage level of the clamp type Ammeter. It is strictly prohibited to use a low-voltage clamp type meter to measure policy to measure the current of the high-voltage circuit. When using a high-voltage circuit. When using a high-voltage clamp type meter for measurement, it should be operated by two people. The non on duty personnel should also fill in the second type work ticket. matul il kejl, huma għandhom jilbsu jiżolaw jiżolaw ingwanti u stand on the insulating mat. Huma should not touch other equipment to prevent short circuit or grounding.
When fażi fażi ta' il kejbil is grounded, kejl is strettament ipprojbit biex jipprevjeni personal sikurezza perikli ikkawżati minn baxx insulazzjoni livell ta' il-kejbil ras dovut għal ertjar ħsarat.
3. After the clamp Ammeter is measured, pull the switch to the massimu range to avoid accidental overcurrent during next use, and store it in a dry room.
4. Osserva l-istrument u ħallas speċjali attenzjoni biex inżamma a safe distance between the machine head and the charged part. The distance between any part of the human body and the charged body and the charged body should not be less the the entire length of the clamp type meter.
5. When measuring on the high-voltage circuit, it is forbidden to use wires to measure from another clamp Ammeter. When measuring the current of each phase of the high-voltage cable, the distance between the cable head and the wire should be more than 300mm, and the insulation should be good. It only be carry out when it is is consider konvenjenti to measure.
When kejl il kurrent ta' vultaġġ baxx fjusis jew orizzontalment irranġat vultaġġ baxx busbars, kull fażi fażi il fjus fjus jew busbars should be protected and insulated with insulating materials before measurement to avoid phase to phase short circuits.
