|
CTI
Rating for Park Materials
(UL File Number
E36295)
|
CTI
Rating for Nelco Materials (Rev
C 10-06)
|
Material Designation
|
ANSI
Type
|
PLC
|
|
N4105-2,
N4105-7
|
FR4
|
2
|
|
N4105-6,
N4105-6 FC
|
FR4
|
2
|
|
N4105-11,
N4105-29
|
FR4
|
3
|
|
N4103-12
|
FR4
|
3
|
|
N4103-13, N4103-13EP |
FR4
|
3
|
|
N4^^-13
RF
|
FR4
|
3
|
|
N5103-30,
N5203-30
|
GPY
|
2
|
|
N5103-32,
N5203-32
|
GPY
|
2
|
|
N5105##
|
--
|
4
|
|
N8105##, N8205##
|
--
|
4
|
|
N7101-1, N7201-1
|
GPY
|
4
|
|
N7105-2 V0, N7205-2
V0
|
GPY
|
4
|
|
N9000
- MY##, NY##,
MX##, NX##, MH##, NH## |
--
|
0
|
|
|
The following
table was copied from:
Underwriters
Laboratories Inc., Recognized Component Directory
- In effect as of February 11, 2000
Comparative
Tracking Index (CTI)
Expressed as that voltage which causes tracking on a material after
50 drops of 0.1 percent ammonium chloride solution has fallen. The
results of testing the nominal 1/8 inch (3mm) thickness are considered
representative of the materials performance in any thickness.
| CTI
Range Tracking Index (in volts) |
Assigned
PLC |
| > 600
and greater |
0 |
| > 400
and up to 600 |
1 |
| > 250
and up to 400 |
2 |
| > 175
and up to 250 |
3 |
| > 100
and up to 175 |
4 |
| >Less
than 100 |
5 |
Note: Performance
Level Categories - In order to avoid an excessive level of implied
precision and bias, material performance for several tests is recorded
as Performance Level Categories (PLC), based on the mean test results
(rather than recording the exact numerical results), as indicated
in the table above.
|
|