High and low temperature alternating humid heat test box electrical system failure causes

When the high temperature test chamber is operated, the working frequency value of the power supply and distribution system is required to be within
+12% to -16% of the rated voltage.

If the power transformer is unstable, it will be difficult to start or often standby, and the situation is serious at that time less damaged components
.

Another 1, high temperature test chamber are used in the special line logistics supply and distribution system, because the power cord plug used should meet the requirements, can not be too thin or too long, otherwise it will cause the gas pressure is too large, resulting in environmental test chamber refrigeration unit can not all operate normally
.

The specification selection value of the cross-section of the power cord plug of the alternating high and low temperature box should be based on the rated current of the environmental test chamber, and cannot be selected at will, let alone replaced
by the old conductive wire.

When troubleshooting the power transformer, it is also necessary to investigate whether the power transformer fuse meets the requirements
.

The power transformer fuse is generally rated at 1.
6 to 2.
3 times the rated current of the high temperature test chamber as the rated current
of the fuse.

For the fuse of the high and low temperature test wet and cold tester that often starts and the load side, the rated current should be equal to or slightly greater than 3 to 3.
6 times
the rated current of the environmental test chamber.

1.
The high temperature test chamber shell needs to be effectively grounded to ensure the safety factor
of operation.

2.
The experimental instrument should be placed in a horizontal position in the room where the air circulates you zhi, and inflammable and explosive materials
should not be placed near it.

3.
Should be installed in the power supply and distribution system line of the enclosure of the gate switch, for this box special, in the shell grounding system before there is electricity, please check the characteristics of the box of electrical products, and should pay attention to whether there is a short circuit fault or power problem, the instrument and equipment without flameproof type machinery and equipment, can not put inflammable and explosive materials heat allergy
.

4.
The items in the high temperature test chamber should not be over-squeezed, and the indoor space needs to be designed to facilitate the air breathing system
.