1) The whole cabinet is grounded to earth.
2) Emergency stop button is equipped with magnetic materials and is removable on both sides according to the height of the operators.
3) One magnetic switch on the door of the test cabinet. When it is charging, it is impossible to open the door of the test cabinet. Unless the operator stops or pause the test, the door of the test cabinet can be opened.
4) Manual earthing rod and Automatic earthing system
Test Class II or Class III SPDs
| Model No | Open circuit voltage waveform
（1.2/50μs ） |
Short circuit current Waveform（8/20μs） | Output Impedance | Impulse repetition |
| CWG6 | 1~6kV | 0.5~3kA | 2Ω | 3 pulses/minute |
| CWG10 | 1~10kV | 0.5~5kA | 2Ω | 2 pulses/minute |
| CWG20 | 1~20kV | 1~10 kA | 2Ω | 2 pulses/minute |
| CWG30 | 1~30kV | 1.5~15kA | 2Ω | 2 pulses/minute |
Optional
| Impulse module no | Output waveform | Output range | Output Impedance | Impulse repetition |
| JXIM-01 | Combination waveform
10/700μs
|
1~10kV | 40Ω | 2 pulses/minute |
| Combination waveform
5/300μs |
25~250A | |||
| JXIM-02 | 10/350μs | 1~5kA | 12Ω | 2 pulses/minute |
| JXIM-03 | 10/1000μs | 75~375A | 37Ω | 2 pulses/minute |
| JXIM-04 | 8/20μs | 5~30kA | 0.5Ω | 2 pulses/minute |
Coupling/Decoupling network
IEC 61000-4-5, IEC 61643-11,UL1449-2006, GB18802.1, GB/T18802.21
