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What megohm reading should you get testing a low voltage cable?
Wiki User
∙ 11y ago
Greater than 1 Megohm
Wiki User
∙ 11y ago
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How much voltage for 132kv UG cable high voltage testing?
it depends on the specification,,,,,,in saudi arabia as per sec standards 152kv voltage should be applied for a period of one hour.
How do you measure continuity of protective conductors for ring final circuit?
A megohm meter is an insulation test instrument. If the project requires an insulation test to be done then this is what you should use. A "megger" will apply a DC voltage up to 1000 volts on the conductor to see if there is a breakdown in the insulation value.
When testing a shortened diode with a DMM and the positive lead is connected to the anode what should the reading be?
Assuming the DMM is rated to test diodes (not all are), meaning that it presents more than forward drop voltage to the diode, a shorted diode will test nearly zero ohms, usually in both directions.
When testing a power transformer with an ohmmeter which winding should have the largest ohmic value?
The higher-voltage winding has more turns (therefore its conductor will be longer) than the lower-voltage winding and, because it will carry less current, its conductors will have a lower cross-sectional area. Consequently, the higher-voltage winding will have a higher resistance than the lower-voltage winding.
When testing transistors how much minimum voltage difference should be seen across the base-emitter junction?
It depends on the transistor. Minimum base-emitter junction voltage can be as low as 0.6 volts for a silicon transistor, and as low as 0.2 volts for a germanium transistor.
What happens to the value of insulation resistance of a cable when the cable gets older?
Insulation resistance should be approximately one megohm for each 1,000 volts of operating voltage, with a minimum value of one megohm. For example, a motor rated at 2,400 volts should have a minimum insulation resistance of 2.4 megohms.
Which mode is use in digital multimeter for testing of diode?
A: For a digital meter to test a diode it must have a scale for resistance for it to work, If not a 1.25 v cell with series limiting resistor will work. If you measure across the diode the reading should be .7 volts reverse the cell polarity then the diode voltage should be 1.25 v .7v is forward voltage 1.25 is reverse voltage.
What is the principle used in a megger?
A "Megger" (which is short for "Megohm meter") is an instrument which generates a very high DC voltage so as to be able to test the quality of insulation which should have a very high resistance that can only be measured in megohms.
How much voltage for 132kv UG cable high voltage testing?
it depends on the specification,,,,,,in saudi arabia as per sec standards 152kv voltage should be applied for a period of one hour.
What is the voltage reading of the tps on a 93 transport 3800 at idle and full throttle?
The voltage reading on the TPS of a 1993 Transport 3800 should stay the same at idle as at full throttle. It should read between 13 and 14 all of the time.
What should you have for voltage to the pump on a 2001 kia?
Most fuel pumps should read about 9 volts, but I think I remember some reading about 5 volts. Why do you need to the voltage at the pump?
What range should you set the voltmeter prior to taking a voltage measurement?
Make a guess of what the voltage will be and set the range accordingly. If needed, change the range after measuring the voltage, to get a better reading.
When testing for electrolysis in the cooling system the digital volt-ohmmeter (DVOM) reading should not exceed?
Go
Which is the correct voltage division setting for testing a throttle position sensor?
Volt meter should be in a 5 volt scale.
Should there be a voltage reading on a low pressure switch with system operating on cooling?
No but if the lights came out we cant have air
There is only 20 volts not 120 volts on outlet that was fine the day before.?
This is strange, check the scale on your meter that you are reading, to make sure that you are on the correct voltage scale. If the reading is correct the suggestion would be to get an electrician to look into why there is such a voltage drop on the outlet. Don't read the voltage across the device, read the voltage from the "hot" wire to ground. That should be 120 volts. If you get that reading then there is a problem with the neutral. It could be loose or have a high resistive condition.
What is the voltage reading of positive wire in 110V dc?
You should be asking, 'What is the potential reading of a positive wire....?', as 'voltage' means 'potential difference' and you can't have a potential difference on a wire! The positive wire has a potential difference of +110 V with respect to the negative wire.
