Switch Safety

Safety Disconnect

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H361DX 600V 30A 3Phase NEMA 4X Fusible Safety Disconnect Switch
H361DX 600V 30A 3Phase NEMA 4X Fusible Safety Disconnect Switch
$1,781.38
H464 600V 200A 3Phase NEMA 1 Fusible Safety Disconnect Switch
H464 600V 200A 3Phase NEMA 1 Fusible Safety Disconnect Switch
$688.73
Square D disconnect safety switch H365 3 pole 600 VAC 400 amp fusible
Square D disconnect safety switch H365 3 pole 600 VAC 400 amp fusible
$625.00
HU361DX 600V 30A 3Phase NEMA 4X Non-Fusible Safety Disconnect Switch
HU361DX 600V 30A 3Phase NEMA 4X Non-Fusible Safety Disconnect Switch
$261.38
H363 600V 100A 3Phase NEMA 1 Fusible Safety Disconnect Switch
H363 600V 100A 3Phase NEMA 1 Fusible Safety Disconnect Switch
$389.31
Square D H363 Fusible 100 Amp Nema 1 Heavy Duty Safety Disconnect Switch Used
Square D H363 Fusible 100 Amp Nema 1 Heavy Duty Safety Disconnect Switch Used
$175.00
I-T-E NF-352 SAFETY DISCONNECT SWITCH 60 AMP + 1 year warranty
I-T-E NF-352 SAFETY DISCONNECT SWITCH 60 AMP + 1 year warranty
$39.99
Siemens GF321N Type 1 Enclosure 30A 240V Safety Disconnect 1 Year Warranty
Siemens GF321N Type 1 Enclosure 30A 240V Safety Disconnect 1 Year Warranty
$39.99
92446 600V 600A 4Pole 3Phase 4Wire NEMA 1 Non-Fusible Safety Disconnect Switch
92446 600V 600A 4Pole 3Phase 4Wire NEMA 1 Non-Fusible Safety Disconnect Switch
$4,468.37
92346 600V 600A 2Pole 1Phase 2Wire Non-Fusible Safety Disconnect Switch
92346 600V 600A 2Pole 1Phase 2Wire Non-Fusible Safety Disconnect Switch
$3,964.12
Square D H366NR 600a 600v 3P 4W Heavy Duty Disconnect Fusible Safety Switch- NIB
Square D H366NR 600a 600v 3P 4W Heavy Duty Disconnect Fusible Safety Switch- NIB
$3,200.00
92355 240V 400A 3Pole 3Phase 3Wire NEMA 1 Non-Fusible Safety Disconnect Switch
92355 240V 400A 3Pole 3Phase 3Wire NEMA 1 Non-Fusible Safety Disconnect Switch
$2,654.55
92454 240V 200A 4Pole NEMA 1 Non-Fusible Safety Disconnect Switch
92454 240V 200A 4Pole NEMA 1 Non-Fusible Safety Disconnect Switch
$1,539.44
H365R 600V 400A 3Phase NEMA 3R Fusible Safety Disconnect Switch
H365R 600V 400A 3Phase NEMA 3R Fusible Safety Disconnect Switch
$1,469.82
H366 600V 600A 3Phase NEMA 1 Fusible Safety Disconnect Switch
H366 600V 600A 3Phase NEMA 1 Fusible Safety Disconnect Switch
$1,292.75
HU365 600V 400A 3Phase NEMA 1 Non-Fusible Safety Disconnect Switch
HU365 600V 400A 3Phase NEMA 1 Non-Fusible Safety Disconnect Switch
$715.12
D326 240V 600A 3Pole Fusible Safety Disconnect Switch
D326 240V 600A 3Pole Fusible Safety Disconnect Switch
$538.09
Siemens Safety Switch Fusible Disconnect 400A 3PH 600/480V HF365 1 YEAR WARRANTY
Siemens Safety Switch Fusible Disconnect 400A 3PH 600/480V HF365 1 YEAR WARRANTY
$499.99
Siemens Safety Switch Fusible Disconnect 400A 3PH 600/480V F355 1 YEAR WARRANTY
Siemens Safety Switch Fusible Disconnect 400A 3PH 600/480V F355 1 YEAR WARRANTY
$399.99
H362RB 600V 60A 3Phase NEMA 1 Fusible Safety Disconnect Switch
H362RB 600V 60A 3Phase NEMA 1 Fusible Safety Disconnect Switch
$335.68
H363 600V 100A 3Phase NEMA 1 Fusible Safety Disconnect Switch
H363 600V 100A 3Phase NEMA 1 Fusible Safety Disconnect Switch
$223.77
H362RB 600V 60A 3Phase NEMA 1 Fusible Safety Disconnect Switch
H362RB 600V 60A 3Phase NEMA 1 Fusible Safety Disconnect Switch
$157.38



Safety+Disconnect





Dielectric Voltage Stand up to Check of Electrical Products

Dielectric voltage withstand check is demanded in nearly every security standard of
electrical safety tester
products, for dielectric voltage stand up to check is really a vital component of security standard of electrical items. Dielectric voltage stand up to test will be the so-called higher voltage check which happens to be a test to determine whether or not the insulating materials and spatial distances adhere to the standard by giving a voltage which happens to be higher compared to the rated voltage to the equipments for certain time.

Check Method

one. Check if the main power change in the hipot tester is “OFF”.

2. Except for the special design in the equipment, all the other conductive metal parts really should be well grounded.

3. Connect all the wires or terminals at the energy input end in the measured equipment.

4. Close all the energy switches and relays, etc.

5. Set the tested voltage of the hipot tester to zero.

6. Connect the higher voltage transmission line (generally red) to the energy input end in the measured equipment.

7. Connect the loop grounding line (generally black) towards the accessible conductive metal part in the measured equipment.

8. Close the main energy change of the hipot tester and raise the secondary voltage of the hipot tester to the desired value slowly. Usually, the raise speed of voltage must be kept below 500V/sec.

9. Maintain this testing voltage within the time specified.

10. Lower the testing voltage slowly.

11. Disconnect the main energy switch of the hipot tester. First disconnect the high voltage transmission line and then the loop grounding line.

The following cases show that the measured equipment fails the check:

The testing voltage cannot be raised towards the desired voltage value or it lowers instead.

There may be warning signal on the hipot tester.

It needs to be noticed that we ought to be extremely careful because there may be higher voltage which happens to be danger for human body existing in the dielectric voltage stand up to test.

Cases that can make the equipment free from factory dielectric voltage stand up to check.

The energy input of the items will be the ELV or SELV in the secondary output of other items, such as power supply and transformer.

The merchandise will use alternative power supply as component, and this energy supply is identified by CSA, of complete case and input and output connector. For it's identified by CSA, this energy supply has passed the dielectric voltage withstand check. Therefore, we can consider relieving it from dielectric voltage withstand check. Nonetheless, we have to check whether the energy supply is damaged before it is installed.

When the signal transformer is applied within the circuit of same voltage, and it's not the safety device, we can consider relieving the component from the start towards the iron core from dielectric voltage withstand test.

Matters that must be paid specially attention to:

It must be specified that only trained and authorized personnel can come into the check zone and operate the equipment.

Fixed eye-catching warning signals ought to be set around the test zone to keep other people from the danger area.

During the check, all the personnel, including the operators, must keep distance with the
hipot tester
and measured equipment.

When the tester is started, the output line should not be touched by anyone.



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