CABLE SNATCH TESTING
Snatch Testing is conducted on tinsel cord to determine whether it will fail in service should a specific force be exerted on the cable. The requirements for the test are defined in the standards IEC 60227-1 Clause 220.127.116.11 and IEC 60227-2 Clause 3.3.
CORD SNATCH TEST
Thermoplastic and Thermosetting insulated cables can be tested, which sees the cable connected to a 0.5 kg weight (5N*1)and elevated to a height of 0.5 m. The cable has a current of 230 V, 50 Hz supply passed through it.
Cables meeting the following criteria can be tested for Cord Snatch Testing:
|Thickness of Insulation Specified Value (mm)||Mean Overall Dimensions (Lower Limit) (mm)||Mean Overall Dimensions (Upper Limit) (mm)||Minimum Insulation Resistance at 70oC (MΩ.km)||Maximum conductor resistance at 20oC (Ω/km)|
|0.8||2.2 x 4.4||3.5 x 7.0||0.019||270|
The test sees the weight electromagnetically released to drop simply using gravity, with the cable assessed to determine continued operation each time. Each test is recorded in real time, and any failure or break in the conductivity is alerted. The snatch test is repeated 5 times before the cable is deemed to have passed.