• Low flammability
• Low smoke generation
• Low toxicity index
• Low generation of corrosive gases
• Small size, lightweight
Type 99T
Wire and cable
Type 99T wire has a dual wall
construction of modified polyester. This
combines excellent mechanical
performance and chemical resistance
with a range of enhanced fire hazard
properties. Type 99T wire is designed to
meet the stringent low hazard
performance now being specified by
many authorities, in particular for naval,
mass transit and industrial control panel
wiring.
Approvals
During the 1980’s there were major
changes in the demands of many wire
and cable specifications to reduce the
risks associated with all aspects of fire
hazards. Specifications such as Def Stan
61-12 Part 18, have been developed over
the last decade demanding improved
performance of wires and cables under
fire conditions.
This has led to a tightening of the
requirements for flammability, smoke
generation, corrosive gas generation and
hazardous fume emission. Type 99T wire
achieves these improvements in
performance whilst retaining small size,
light weight, flexibility, handleability,
resistance to carbon arc tracking and
resistance to chemicals and fluids.
Raychem WCD 282
A014000 (Australian Navy)
Primary wires/screened and jacketed cables - 99T
99T011X (600 V)
primary wire
99T021X (1000 V)
primary wire
99T111X
screened & jacketed
99T1121
screened & jacketed
Size
26
24
22
20
18
16
14
12
Stranding
(mm)
19/0.10
19/0.12
19/0.15
19/0.20
19/0.25
19/0.30
37/0.25
37/0.32
OD
(mm)
0.94
1.05
1.21
1.46
1.71
1.96
2.25
2.71
Weight
(g/m)
OD
(mm)
Weight
(g/m)
OD
(mm)
Weight
(g/m)
OD
(mm)
Weight
(g/m)
4.4
6.8
9.9
14.9
19.6
25.7
1.41
1.65
1.89
2.10
2.50
2.97
4.9
7.3
10.9
14.5
21.8
31.3
2.31
2.56
2.81
3.06
3.36
3.81
11.1
14.6
19.3
24.9
30.9
43.4
3.52
4.02
4.52
5.02
5.62
6.52
20.5
27.7
37.1
48.5
60.5
86.0
Physical characteristics
Handleability
Type 99T wire has been designed to be readily
handleable by modern wiring and harnessing
techniques. It is a flexible wire with virtually no
springback once set. It is easily stripped with tools
such as conventional die-blade strippers.
Small size
Type 99T equipment wire has a nominal
0.2 mm insulation wall thickness which is
comparable to other established thin wall
wires such as Spec 44 wire.
Light weight
Type 99T wire is designed to have the
same weights as Spec 44 wire.
Type 99T
Typical properties
Test
Temperature rating
Voltage rating
Tensile strength
Elongation at break
Notch propagation (0.05 mm notch)
Shrinkage 150°C
Low temperature bend
Voltage withstand
Insulation resistance (20°C)
Pliability rating
Fluid resistance
Oils - (ASTM No 3)
Deionised water
BS 2G230
BS 2G230
BS 2G230
BS 2G230
UITP
Def Stan 61-12 (18)
Def Stan 61-12 (18)
100°C/72 hours
50°C/7 days
Pass
Pass
Method
BS 2G230
Raychem
Typical value
105°C
600 V thin wall
>30 MPa
>250%
Pass
<1%
-40°C
2.5 kV
1000 M ohms km (min)
82 - Pliable
Environmental properties
Mechanical performance
The scrape abrasion and cut through resistance
of Type 99T wire out performs the well-
established performance of Spec 44 wire
throughout its operating temperature range.
Fluid resistance
Type 99T wire demonstrates outstanding
resistance to most acids, alkalis, hydrocarbon
solvents, fuels, lubricants and water.
Electrical arc tracking
Type 99T wire is resistant to electrical arc
tracking under both wet and dry conditions
Voltage ratings
Standard available voltage ratings for Type 99T
wire are 600 V (0.2 mm wall thickness) and
1000 V (0.3 mm wall thickness).
Fire hazard characteristics
Low Toxicity Index
Type 99T wire is designed to meet the low
hazardous fume emission levels required in
modern specifications.
For example, the change in the Toxicity Index
requirement from 1.5 to 0.2 between Issue 2
and Issue 3 of Defence Standard 61-12 (Part
18), is met by Type 99T wire.
Flammability
Type 99T wire has passed some of the most
stringent flammability tests, such as the test in
IEC 332 Part 3 (ladder test) and Underwriters
Laboratory for VW1 (individual wire).
Smoke generation
Type 99T wire has been designed to meet
stringent smoke tests such as those specified in
Def Stan 61-12 (Part 18) and in many mass
transit specifications.
Corrosivity
Type 99T wire has a low corrosive gas emission,
demonstrated by its low acid gas value.
Fire hazard properties
Test
Flammability
Toxicity index
Smoke index
Acid gas equivalent
Method
IEC 332 Pt 3
Def Stan 61-12 (18)
Def Stan 61-12 (18)
TDE 76/P/16
Typical value
Pass
0.1 per metre of wire
8 per metre of wire
<1.5%
Type 99T
Part numbering system
99
X
X
X
X
X
Size-
X/X-
X
Jacket colour
(in accordance with MIL-STD-681, black
preferred)
Primary wire insulation colour
0=Black
3=Orange
7=Violet
1=Brown
4=Yellow
8=Grey
2=Red
5=Green
9=White
2L=Pink
6=Blue
Additional number after base colour
indicates stripe
Conductor size
Conductor type
1 - Tin-plated copper
Number of conductors
1, 2, 3, 4 etc.
Class of wire
1 - 600V equipment wire
2 - 1000V equipment wire
Construction
0 - Primary wire & unscreened,
unjacketed cables
1 - Round braid screened & jacketed
†
9 - Special construction
Wire type
T - Transit wire
Basic specification number
†
The cable jackets are Raychem Zerohal and the preferred colour is black.
Typical ordering example
Two conductors, transit wire, black, red components, black jacket. Round braid screened,
size 20 conductor, 600 volt. Part number is 99T1121-20-0/2-0.
Raychem and Type 99T are trademarks of Raychem Interconnect, a division of Tyco Electronics
Corporation.
Raychem Wire and Cable
Faraday Road, Dorcan,
Swindon, Wiltshire SN3 5HH
Tel: (44)-1793-528171
Fax: (44)-1793-572516
All of the above information, including illustrations, is believed to be reliable. Users, however, should
independently evaluate the suitability of each product for their application. Tyco Electronics makes no
warranties as to the accuracy or completeness of the information and disclaims any liability regarding its use.
Tyco Electronics only obligations are those in the Standard Terms and Conditions of Sale for this product and in
no case will Tyco Electronics be liable for any incidental, indirect or consequential damages arising from the
sale, resale, use or misuse of the product. Tyco Electronics Specifications are subject to change without notice.
In addition Tyco Electronics reserves the right to make changes in materials or processing, without notification
to the Buyer, which do not affect compliance with any applicable specification.
WC0020.1299
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