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What will the current be on a hand held meter on a three phase motor if you clamp to two leads?
Wiki User
∙ 15y ago
No way to tell. first off odds are you're measuring voltage rather than current, but apart from that the value would differ with your grid service and the rating of the motor
Wiki User
∙ 15y ago
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Is starting current of a AC Motor measured as RMS or PEAK?
IT DEPENDS WHAT MEASURING INSTRUMENT YOU ARE USING. RMS - IF USING THE CLAMP AMMETER OR PANEL METER OSCILLOSCOPE - BOTH CAN BE READ
How can you find motor FLA without the motor nameplate The motor is single phase 120 vac?
use clamp on amp meter
What would someone use a fluke clamp meter for?
A fluke clamp meter is used for electrical purpose by electricians. You can use them to measure things such as a large air condition currents. Different clamp meters have different features such as being able to measure motor inrush currents.
Does it matter if the voltage leads the current or the current leads the voltage?
Yes. If voltage leads the current, the impedance is inductive (this would be the case if the load is a motor). If current leads the voltage, the impedance is capacitive (this would be the case for a CFL light bulb).
How do you take an amp reading on three phase motor without an amp clamp?
This can be extremely dangerous if you do not know what you're doing. If you are even the slightest bit unsure call an electrician to do it. To measure amperage you will first have to turn the circuits off that feed the motor. Next you will have to open one of the connections for one of the phases and wire your amp meter in series with the motor meaning you will have to make the current pass through your amp meter and go into the motor once it is running. Make sure that your meter is sized and fused appropriately or you risk injury and damage to your meter, maybe even death.
Would a one third horsepower single phase motor that normally operates at 6.8 amps draw 34 amps at start up?
Not usually. The rule of thumb is 300% of the full load amps. The only way that you can check this inrush current is to have a clamp on amp-meter with the setting on Hold. What this does, is sense the highest current at start up and holds the reading on the screen until you release it. If you try and start a motor under a high inertia load the current will rise above a normal inrush level. Disconnect the load from the motor to establish that it is the load that is causing the high amperage and not the motor's internal wiring.
How do you connect a battery to a small motor?
Connecting is simple. The main issue is what kind of motor do you have? Batteries are DC. Therefore the motor must be DC or a universal motor, or a permanent magnet DC motor. The motor voltage and current requirements must match the battery's voltage and ampere-hour rating. A standard DC motor has 4 leads A universal motor has 2 leads A permanent magnet DC motor has 2 leads. The motors with 2 leads are easy: + and -- The 4 lead motor: 2 leads are "field" (F1 F2) 2 leads are armature (A1 A2) one of each goes to + (F1 A1) one of each goes to -- (F2 A2) The motor must be very small in horsepower to work off a battery. There are other more complex DC motors with more leads than 4, but there are NOT going to run on a battery.
How do you check how many amps a motor is pulling?
For permanent current measurement of large motor amperage's the feeder wires are run through a CT (current transformer) whose output is displayed on a panel mounted amp meter. A clamp on amp meter is a fairly accurate measuring device that measures the current while the motor is in operation. It is a hand held device that clamps around the motor lead that is being tested. A comparison between the clamp on meter and the motor name plate will let you know if the motor is near overload or if it is in an overloaded condition.
What is the difference between protective current transformer and metering currrent transformer?
Usually nothing. The only difference is what it is connected to and operates. The leads from the current transformer could power a meter for remote indication or a protective relay to trip the system offline.
What is the motor anergy transfer?
The motor energy transfer refers to conversion of electrical current to magnetic, kinetic, heat and sound energy. The energy that leads to the rotation of the motorÕs axis is referred to as kinetic.
How do you change a direction of a motor?
DC motor: Switch your leads. AC single phase motor: Direction cannot be changed. The motor will run the same direction regardless of how your leads are terminated. AC 3 phase motor: Switch any two leads.
Which current driver has won the most races at Charlotte Motor Speedway?
Jimmie Johnson leads the current Nascar Cup Series drivers with six wins at Charlotte Motor Speedway. Mark Martin and Kyle Busch share the Nationwide Series lead with six wins each, and Kyle Busch leads the Truck Series with four wins at Charlotte.
