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yun yang's Blogs >> yyang 25kVA wire and cable-frequency pressure testing machine operating procedures

The order applies to 25kVA wire and cable-frequency pressure testing machine to do a round sheathed cable (wire), the single-core cable (wire) voltage test of flooding and two core and over insulated cores between flooding voltage test.

1 ready to work
1.1 is ready to be tested wire and China Electric Wire
, the cable must be tested after cooling to room temperature before the high-pressure test. Appearance quality should be checked before the test, the geometry of the squeeze clad eccentric mechanical damage.
1.2 cutaway the end portion of the wire and cable jacketing layer about 150mm long (visual insulated cores, the number or the size of the cross section of specific length determined to be able to guarantee that when voltage is applied between the insulated cores can guarantee a certain distance, to prevent collide conductive core principle), the insulated cores are separated from each other, the pressure test end stripped the insulation layer, arranged in hierarchical line core cabling pressure test wire and cable ends should pay attention to keep clean.
2 test procedure
2.1 Voltage test when wiring methods in Table 6, voltage test points can require insulated cores.
2.2 connect the test leads, test personnel to leave the test area, turn off the test area door, the door on the trip switch is turned on.
2.3 pressed to the alarm button, the bells ringing to alert the attention of the persons present.
2.4 turn on the power and control of the power switch, power indicator light.
2.5 open high-voltage starter switch, high pressure indicator, adjust the voltage setting knob reaches the specified value of the test voltage.
2.6 Test time to automatically buck back to the zero position and cut off the high-pressure, issued a "qualified" sound and ina-powercable.com/category/pvc-wire-and-cable.html">PVC Wire Cable
signals, said test sample qualified, press the "reset" button signal is eliminated, bringing the test results.
2.7 If the test product breakdown, will immediately cut off the high-pressure and issued a "breakdown" of the sound and light alarm, press the "reset button" to eliminate the sound and light alarm.
2.8 rewire disconnect control the power, cut off the power supply.
2.9 during the test, such as cable breakdown occurs, you should make a record, find out the breakdown point for processing through the pour plate.
Note 3
3.1 device for high voltage testing equipment to ensure the personal safety of the test personnel, must be the removal of the power to replace the test sample, the floor board operation must cover insulating rubber mat, wear protective equipment, must have a responsible for overseeing the operation.
3.2 testing machine testing machine and the fence whether reliable ground must be checked before use.
3.3 adequate motor starting time stay in the high-voltage start button should be pressed, do not let go too fast.
3.4 test machine placed spaces should be ventilated, dry, pay attention to dust.