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Large walk-in test chamber is a large test equipment, in order to ensure that it can operate normally, it is necessary to ensure that the power supply connected to the test chamber is stable at about 380V, so as to ensure that the life of the test chamber compressor will not be affected
.
And in addition, in order to ensure the safety of the power receiving personnel, it is best to understand the specific operation method before connecting
.
Many manufacturers produce test chambers using three-phase five-wire power cord, which is composed of
three phase wires, one zero line and one ground wire.
Before the formal connection, it is best to determine whether the wire diameter of the external power supply and the capacity of the total switch meet the actual requirements of the equipment, and then use the multimeter to detect whether the power supply voltage is normal and stable, usually allowing the deviation of 10% RH ±, but if the deviation is too large, it is best to install a voltage regulator to adjust or replace the connected power supply
.
If there is no problem with the power supply voltage that the equipment will be connected to, then the master switch Guianbi, and then connect the zero line on the equipment to the neutral terminal in the distribution box, and the neutral line must be guaranteed during the connection process, otherwise it may cause the equipment to not work properly or burn out the electrical components
.
After determining that the neutral wire is connected, we can connect the three phase wires to the three terminals under the distribution box master switch in the large walk-in laboratory, but make sure the screws are tightened
.
The last thing we need to connect is the ground wire of the device, the connection method is the same as other power cord connections, mainly to connect the bottom line to the ground terminal of the distribution box
.
However, in the process of connecting each power cord, it is best to ensure that you can accurately recognize the meaning of the different colors of the power cord to avoid the connection error that causes the device to fail to test
properly.
