IEC 60038 Standard voltages IEC 60076-2 Power transformers - Temperature rise IEC 60076-3 Power transformers - Insulation levels, dielectric tests and external clearances in air IEC 60076-5 Power transformers - Ability to withstand short-circuit IEC 60076-10 Power transformers - Determination of sound levels IEC 60146 Semiconductor convertors - General requirements and line...
Friday, November 29, 2013
Explosion Proof Lighting & Power Distribution Panel Board Series
DOWNLOAD : http://www.akronelectric.com/pdf_files/Explosion-Proof%20Panel%20Boards.pdf ...
Panelboards P1 thru P5 (Selection & application guide)
DOWNLOAD : http://www.scottelectricusa.com/apparatus/panelboards.pdf ...
Clearances & Creepage distances for LV panel boards
Clearances distances Shortest distance in the air between two live conductors or between live Conductors and exposed conductive parts. 14 mm for 12 kV impulse voltage 8 mm for 8 kV impulse voltage 5.5 mm for 6 kV impulse voltage The IEC 60439-1 and IEC 61439-2 standards stipulate the minimum clearances Required to withstand impulse voltage up to 2000 m above sea...
MILLIVOLT DROP TEST
The millivolt drop test is generally associated with testing for weld quality on the armature. It is the best test for verifying armature weld quality. The millivolt drop test is the ultimate electrical test for detecting bad welds. Unfortunately, it is difficult to make on armatures with large diameter wire and nearly impossible to make on armatures with small wires....
Saturday, November 9, 2013
The new IEC 61439 standard
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. In order to conform to the standard, type tests have been replaced by a design verification which can be carried ...
IEC 60529 First Characteristic Numeral Degrees of Protection - Water
INDOOR IP X1 Vertical Falling Drops 10 Min. Drip Test Limited Water Inside; Not on Live Parts IP X2 15° Vertical Falling Drops ...
IEC 60529 First Characteristic Numeral Degrees of Protection - Solids
>> IEC 60529 First Characteristic Numeral Degrees of Protection – Solids Protection Test Method Pass Criteria INDOOR IP 1X Incidental Contact & Solid Objects Ø 50 mm – Probe No Penetration IP 2X Incidental Contact & Solid Objects Ø 12.5 mm – Probe No Penetration IP 3X Incidental Contact & Solid Objects Ø 2.5 mm – Probe No Penetration...
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