Northern Connectors Souriau UTL Series Push-Pull Connectors - Manual (Page 42)

42 © 2012 – SOURIAU
UTL Series
Technical information
There are two main standards for industrial connectors: UL94 & UL1977
UL 94: Tests for Flammability of Plastic Materials for Parts
in Devices and Appliances
This standard is dedicated to plastics fl ammability. It characterises how the material burns in various orientation and thicknesses. Whereas
most of our competitor are using a 50W test to classifi ed the ability of their solution to withstand fi re, Souriau decided to increase this to a
500W test. New regulations tend to emphasize the importance of burning behavior making the 50W test less and less relevant.
The UTL series has been rated at 5VA.
Procedure: Bar specimens are to be 125 ±5 mm long by 13 ±0.5 mm wide, and provided in the minimum thickness.
Plaque specimens are to be 150 ±5 mm by 150 ±5 mm and provided in the minimum thickness.
Thicker specimens may also be provided and shall be tested if the results obtained on the minimum thickness indicate inconsistent test
results. The maximum thickness is not to exceed 13 mm.
5VA Vertical burning:
• The specimen is clamped from the upper 6 mm of the
specimen, with the longitudinal axis vertical, so that the
lower end of the specimen is 300
±10 mm above a horizontal
layer of not more than 0.08 g of absorbent cotton thinned to
approximately 50 x 50 mm and a maximum thickness of
6 mm.
• The 500W fl ame is then to be applied to one of the lower
corners of the specimen so that the tip of the blue cone is
within 0 to 3 mm of the specimen edge.
• Apply the fl ame for 5
±0.5 seconds and then remove for
5 ±0.5 seconds. Repeat the operation until the specimen
has been subjected to fi ve applications of the test fl ame.
Underwriter Laboratories
5VA Horizontal burning:
• Support the plaque specimen by a clamp in the horizontal
plane.
• The fl ame is then to be applied to the centre of the bottom
surface of the plaque so that the tip of the blue cone is within
0 to 3 mm of the plaque surface.
• Apply the fl ame for 5
±0.5 seconds and then remove for
5 ±0.5 seconds. Repeat the operation until the plaque specimen
has been subjected to fi ve applications of the test fl ame.
• After the fi fth application of the test fl ame, and after all fl aming
or glowing combustion has ceased, it is to be observed
whether or not the fl ame penetrated (burned through) the
plaque material. In addition, no opening greater than 3 mm
shall appear after the test.
Conditions 94-5VA
Afterfl ame time plus afterglow time after fi fth fl ame
application for each individual bar specimen
60s
Cotton indicator ignited by fl aming particles or drops
from any bar specimen
No
Burn-through (hole) of any plaque specimen No
300 ±10 mm
125 ±10 mm
13 ±0.5 mm
45°
Cotton Cotton
Material Material
Overall height of fl
ame
Inner blue
cone
13
±0.5
mm
Material Material
150 ±0.5 mm
Center
45°