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132kv MOCB acceptable value of somthing 150 micro ohms.
A low voltage (less than 1000 VAC) circuit breaker for 15 A typically has a contact resistance of 0.01 Ohm or less.
what is the diference betwean calculated and maesured value
what is the resistance value of a healthy earth pit
In the neon flash lamp experiment, the resistance of the lamp is very low, often in the range of a few ohms. When measuring low resistance, the resistance of the connecting wires and contacts becomes significant and can interfere with the accuracy of the measurement. These additional resistances create uncertainties in determining the exact value of the low resistance of the lamp. Additionally, the behaviour of the neon lamp itself, which is a non-linear device, further complicated the measurement process. Therefore, it is challenging and difficult to accurately determine the precise value of low resistance using this method.
400mega ohms acceptable....
30 micro ohms
132kv MOCB acceptable value of somthing 150 micro ohms.
415v air circuit breaker acceptable value of 0.01 ohms and lessthan
An acceptable resistance for a ground to ground plate system is 2 ohms with a maximum allowance to 5 ohms. If the measured resistance is above 5 ohms more grounding rods or plates have to be added to reduce the resistance down to the acceptable levels.
more than 1 G ohms is acceptable. cheers
The PI value depends on the type of equipment being tested and the voltage level. Roughly it shall not be below the value of 2.0
The minimum acceptable insulation resistance value is calculated using the following formula: Rinsulation= (Vrated + 1 ) x (304.8 / L ) Where: Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms; Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).
A low voltage (less than 1000 VAC) circuit breaker for 15 A typically has a contact resistance of 0.01 Ohm or less.
The number of ohms is, precisely, the value of the resistance.
what is the diference betwean calculated and maesured value
what is the resistance value of a healthy earth pit