Facilities - Quality Assurance

FACILITIES - QUALITY ASSURANCE


Resistance Tester	Setting Test Piece, Connecting to Voltage	Status after dropping 0.1% NH₄CL

CTI is the abbreviation of Comparative Tracking Index which is decided by means of Tracking-Resistance Testing. The "Tracking" means the phenomenon that the part in the surface of insulation material become carbonizing conducting electricity track because of voltage which causes insulation material lose insultating features. The "Tracking Resistance" is the resisting action to "Tracking".

CTI is based on the testing method stipulated in IEC-112, similar to UL-746A and ASTM3638. Testing procedure as per following:

1) Put the sample between the two electric poles where they have a distance of 4mm apart

2) Drip 50 drops of 0.1% NH₄HCL solution on the sample

3) The value of the CTI is defined by the largest value of voltage used that does not cause "Tracking"

Flame Retardant Tape

Flame-retardant tape is made of a material which has advanced self-extinguishing properties, thus making it highly resistant to flame. When subjected to strong flame, the rate of combustion is lower and the spread of burn is slower than how ordinary tape does.

UL510 FR Test

Sample	Testing Material	Testing Method
Insulation Tape	Electrical Insulation Tapes	Wind tape repeatedly by overlapping the new layer over the half of previous layer of tape

Class Of Insulation
Class of insulation in conformity with IEC Pub. 85 (1948) are as follows:
Thermal Class	Y	A	E	B	F	H	200	220	250
Temperature	90^oC	105^oC	120^oC	130^oC	155^oC	180^oC	200^oC	220^oC	250^oC

Oversea Related Organization
UL	Underwriters Laboratories Inc	USA
FS	Federal Specifications and Standards	USA
CSA	Canadian Standard Association	CANADA
ASTM	American Society for Testing & Materials	USA
PSTC	Pressure Sensitive Tape Council	USA