Page 244 - HAZET英文2021
P. 244
Hand Tools
Tools with protective insulation / Tools for electricians
Exemplary examples of VDE tests
using a HAZET torque wrench with protective insulation
2 m
at + 23 °C
0.6 m
at – 25 °C
Electrical test [type testing] Cold impact test [type testing]:
No breakdowns or arcing may occur in With a retention time of 2 hours at an ambient
the vicinity of the insulation after 48 hours temperature of -25 °C, the insulation must not
of moisture-proof storage with a 3-minute present any cracks or other damage during targeted
measurement under 10,000 V. shocks and impacts (falling height 0.6 m).
Impact test at the ambient temperature:
20 sec.
At an ambient temperature of 23 °C, the insulation
must not present any cracks or other damage after
120 mm targeted shocks and impacts (falling height 2 m)
10 sec. 5000 V
2 kg ^ 20 N
=
Burn test [type testing]: 3
min.
After 10 seconds in a flame, the insulation 2 kg
must not prove to be "easily combustible".
50 kg
+ 70 °C
3
min.
Pressure test [type testing]:
After being stored for 2 hours at a temperature
of 70 °C, with a pressure load of 20 N and a
3-minute measurement under 5,000 V, there must
be no punctures or arcing in the insulation.
Test for adhesion:
The insulation must not come loose or
slacken when under a tensile load for
3 minutes with 500 N after 168 hours
in a climatic chamber at +70°C.
Components and spare parts from page 482 to 490 Valid until December 31, 2021 243
