UTG18-AC Souriau Connection Technology, UTG18-AC Datasheet - Page 102

• Manufacturer Part Number: UTG18-AC
• Description: CABLE CLAMP W/STRAIN RELIEF #18
• Manufacturer: Souriau Connection Technology
• Series: Trim Trio® UTGr
• Type: Clampr

Specifications of UTG18-AC

• Cable Opening: 0.197" ~ 0.748" (5.00mm ~ 19.00 mm)
• Shell Size - Insert: 18
• Thread Size: 1 1/16-18
• Features: Strain Relief
• Operating Temp Range: -55C to 125C
• Product Length (mm): 50mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Diameter: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: SOU1127; UTG1-8AC; UTG18AC

From simple calculations, one can see that
the closer the bundle approaches the single
wire condition, the higher the allowable
current per conductor becomes, to even
such an extent, that it exceeds the
recommended continuous current value. In
that case, the recommended continuous
value should have preference. In order to
make this clear, we will give hereafter some
typical examples.
• Example 1
Cable bundle, 48 conductors AWG20
(0.5mm
connector with insert arrangement
24-48 and machined size 16 contacts
RM/RC20.
- Total operating current capacity of
- Total allowable capacity for bundles of
- When all conductors are energized
When for instance 5 conductors are
energized to the recommended continuous
current of 5 A (see table 1) resulting in 25 A
consumption, the other conductors may not
take more than
72 - 25 = 47 A all together, or 1 A per
conductor.
Any other combination can of course also be
taken as long as the total capacity of 72 A is
not exceeded and the recommended
continuous current is respected.
Remark
Please note that contacts used are of the
size 16 type with maximum operating
current of 13 A (table 2).
The maximum operating current of the
bundle is however restricted to 7.5 A per
conductor due to the wire size of AWG20
(see table 1).
bundle 48 x 7.5 A ( table I) = 360 A
more than 15 wires is 20% = 72 A
equally, this gives:
72 : 48 = 1.5 A per conductor
2
) used with circular TrimTrio
Contacts
• Example 2
Cable bundle, 14 conductors AWG22
(0.32 mm
Trim Trio connector with insert arrangement
for 14 contacts, and machined size 16
contacts RM / RC20.
- Total operating current capacity of
- Total allowable for wire bundle of 15
- All conductors energized equally, gives:
This value is within the recommended rating
of 3 A so that it can be applied.
See also remark under example 1.
Table 3 - Recommended continuous current for extreme working conditions
bundle 14 x 5 (table I) = 70 A
wires less 1 is 20% + 6% = 26%
gives 18.2 A.
18.2 : 14 = 1.3 A per conductor
As said before, the recommended ratings are valid for most common wiring systems and
under normal working conditions. For extreme conditions, the given values should be
lowered. The percentage of current reduction should be investigated from case to case.
A rule-of thumb which can be used for such cases is:
It gives us for common used wire sizes the values listed in table 3.
2
) used with rectangular
AWG
26
24
22
20
18
16
14
4 Amp. per mm
wire size
mm2
0.13
0.20
0.32
0.52
0.82
1.30
2.10
2
• Example 3
Cable bundle, 4 conductors AWG16
(1.3mm
connector with insert arrangement 10-4 and
stamped 2 piece contacts
SM /SC.
- Total operating current capacity of
- Total allowable for wire bundle of 15
- All conductors energized equally, gives:
Since the recommended continuous current
is 10 A, the conductor should not carry more
than 10 A individiually.
wire section
bundle 4 x 13 A (table I) = 52 A
wires less 11 is 20% + 66% = 86%
gives 44.7 A.
44.7 : 4 = 11.2 A per conductor
2
) used with circular Trim Trio
recommended
continuous
current
Amp.
0.5
0.8
1.3
2.0
3.3
5.2
8.4
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