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Doing The Insulation Resistance Of The Optic Splice Cabinet Is Really Important

Doing the insulation resistance of the Optic Splice Cabinet is really important
For the production of high and low voltage Optic Splice Cabinet manufacturers, are aware of Optic Splice Cabinet insulation resistance value is a very important electrical equipment insulation indicators, for the safety of electrical equipment is essential, if the lack of insulation resistance then the electrical equipment In a dangerous state or unqualified damage. For low-voltage Optic Splice Cabinet insulation resistance is that it is with the outside of the device is also a prerequisite for normal operation of the equipment, the product must meet the factory before the relevant product standards, the specific product of the insulation resistance requirements are not the same, The most common insulation resistance measurement equipment is the use of DC resistance meter for measurement, DC resistance meter measurement is convenient and accurate data efficiency.
So how to measure the insulation resistance? This will use the megger, the industry-related standards are: insulation resistance requirements - per kilovolt operating voltage of not less than 1 megohm. Specific requirements are as follows: When the measured Optic Splice Cabinet rated insulation voltage between 60V and 660V, the use of 500V megger. If the rated insulation voltage of the tested fiber connector is between 660V and 1000V, use a 1000V megger. Example: 400V low-voltage Optic Splice Cabinet, do the insulation test Megohmmeter is 500V table. The normal situation measured value should not be less than 0.5 megohms. General three-phase 380-volt motor normal conditions measured insulation value should not be less than 0.5 megohms.
The following brief description of the low-voltage optical Optic Splice Cabinet insulation resistance measurement method. Low-voltage Optic Splice Cabinet insulation resistance measurement methods are many, we can according to the specific circumstances to choose their own.
Optical Optic Splice Cabinet measurement steps:
1, first prepared insulation resistance tester, insulation resistance tester must be used within the validity period, and a formal inspection department issued by the certificate affixed to the front of the device can be seen.
2, insulation resistance tester has two sets of measurement lines, a total of four lines, a group of black and a thin one thin line, a group of red a thick and thin line, at the same time were a large and a small folder, wiring The clamp is used to measure the resistance fixed position.
3, the measurement of the use of two sets of measuring line clamp fixed to the place to be measured, such as the contact part, pay attention to the large line clip placed on the outside, small clamp placed on the outside, and try to fix the contact, the most end, so as to react True resistance value.
4, the specific measurement of different parts of the need for equipment closing and opening operation, the specific circumstances of specific treatment.
5, after testing the resistance to print records, unqualified need to carry out substandard process.
Measuring parts:
1, the main switch switch connector in the open position ⊕ with the pole between the line and outlet.
2, the main switch is closed when the different pole between the live parts, such as: phase of the main contact or between the bare bus, between the main circuit and the control circuit.
3, between the live parts and metal frame. The test time is 1 min. Whether the measured insulation resistance values meet the requirements, and the optical Optic Splice Cabinet in each circuit to the ground of the nominal voltage, the requirements are not less than 1KΩV. For example, each circuit to the ground of the nominal voltage of 380V, the insulation resistance can not be less than 380KΩ, or 0.38MΩ, the general requirements of not less than 0.5MΩ. The higher the nominal voltage, the greater the insulation resistance required. If the main switch in the Optic Splice Cabinet and the relevant insulation material is good, there is no problem in the installation, this indicator is not difficult to achieve.