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Instrument   | Hardware
Hardware


Introduction     Products

Introduction
Insulated tools 1000 volts
For low voltage:
E1000 volts AC,
E
1500 volts DC.
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IMPACT TEST AT AMBIENT
TEMPERATURE OF 23+-5XC
INSULATED COATING ADHERENCE TEST
Impact of a tool failing from a height of 2 metres onto a hard surface; the TEST is satisfactory of the insulating layer of the tool shows no sign of a break, tear or crack. After conditioning for 168 hours at 70XC, a weight of 500N is applied for 3 minutes to test the adherence to the steel of the insulated part. For other tools, such as wrenches, the weight is 50N.
The Test is considered satisfactory if here is no detachment of more than 3mm and no tear in the insulation material.
IMPACT TEST AT LOW TEMPERATURE OF  -25XC FOR 2 HOURS TEST FOR NON PROPAGATION OF THE FLAME
Impact of a tool failing from a height of 0.60 metres onto a hard surface; the TEST is satisfactory of the insulating layer of the tool shows no sign of a break, tear or crack. To test the non propagation of the flame, the tool is exposed to a flame for 10secends. The flame is then removed and the propagation should be observed for 20 seconds, The test is considered satisfactory if the height of the flame on the tool does not exceed 120mm for the 20 seconds observation time.
DIELECTRIC TEST SERIES INDIVIDUAL TEST
After immersion in a tub of water at ambient temperature for 24hours and then dried, a test at 10KV is applied for 3 minutes between the conductive and insulated parts. The stray current should be less than 1mA per 200mm of the coated tool. @ Each tool is checked individually at 10KV for 10 seconds. A 100% sight check is carried out to set aside tools showing any fault in their appearance.
PENETRATION TEST @
After conditioning for 2 hours at 70XC, a weight of 20N being applied to the must vulnerable part of the tool, the assembly is submitted to a tension of 5KV for 3minutes. No perforation, energizing or bypassing should be observed during the test. @
C & K Instrument (HK) Ltd    
Address: Flat B, 2/F Universal Industrial Centre, 19-25 Shan Mei Street, Fotan, Shatin, H. K.    
Tel: (852) 2690-3081  Fax: (852) 2690-2210   E-mail: General@cnkgroup.com    
Last updated: 2008/08/15