What is Type Tested Panels? – old IEC60439
Type tested Panel Means, a Panel Design is similar to the one which is tested for Series of particular test Defined by IEC xx439, where design criteria are kept same as that of Type Tested Design.
What is TTA? – old IEC60439
TTA = Type Tested Assembly. Here Panels are Manufactured keeping Design criteria same as that of Certified Type Tested Panel design. Where Results care Verified by Calculations or Design Rules.
What is PTTA? – old IEC60439
PTTA = Partial Type Tested Assembly.
IEC 61439 applicable for which Panels ?
The new IEC 61439 standard applies to enclosures for which the rated voltage is under 1000 V AC (at frequencies not exceeding 1000 Hz) or 1500 V DC.
The standard defines the design verified ASSEMBLIES and eliminates completely the categories TTA and PTTA.