Saturday, November 21, 2009

Type Test required for ASTA certification TTA















Type test will be carried out on a sample of such an ASSEMBLY or on such parts os ASSEMBLIES manufactured to the same or similar design.

Type tests include the following:
  1. verification of temparature rose limits (8.2.1)
  2. verification of the dielectric properties (8.2.2)
  3. verification of the short-circuit withstand strength (8.2.3)
  4. verification of the effectiveness of the protective circuit (8.2.4)
  5. verification of the clearences and  creepage distances (8.2.5)
  6. verification of the mechanical operation (8.2.6)
  7. verification of the digree of protection (8.2.7)
  8. EMC tests ( see 7.10cand, if applicable )
There  test may carried out in any order and /or on different sample of the same type

If  modifications are made to the components of the ASSEMBLY, new type tests have to be carried out only in so far as such modifications are likely to adversely affect the results of these tests.

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