Shielded Signal Control Cables

Single Conductors
RFI Shielded Cables
Meets U.L. Style 2343 or 2344 for Computer Use
National Wire & Cable Corp. manufactures a complete line of flexible signal and control cables in which each trio is individually shielded and plastic-jacketed. Conforming to MIL-C-27072, these cables provide extended temperature, rough usage, military shielding, excellent flexibility. Provides a minimum of crosstalk between signal channels, plus complete isolation between shields. Excellent for analog signals. All jackets are moisture proof and suitable for use in duct, conduit, aerial, or burial installations.
Conductors are stranded tinned copper with .010” vinyl primary insulation plus .004” nylon insulation over the vinyl per MIL-DTL-16878/17. Insulation for 600 Volts working rating at 105°C. Color-coding: Trios-Black, White, and Red. All conductors are 19 strand.
Shielding is tinned copper braid with 85-90% coverage per MIL-C-7078, and shield angle below 40 degrees for easy pushback.
Jackets over shields are extruded 105°C white polyvinylchloride plastic per MIL-I-631, Type F. Each subcable is individually identified by color code per MIL-STD-681, starting with color #9.
All sub-components are planetary cabled and contra-helically laid with a mylar tape serve over the cable bundle. The overall sheath is abrasion-resistant black 105°C vinyl thermoplastic per MIL-I-631, Type F.
Optional overall shielding of cabled bundle is 85-95% minimum coverage of tinned copper braid applied per MIL-C-7078 over the tape serve under sheath.

Specifications

Insulation Breakdown Voltage	Greater than 5000 volts AC RMS, 60 Hz.
Insulation Leakage Res.	200 Megohms/1000 ft. at 500 VDC from any conductor to all else in cable.
Sheath Leakage Res.	10 Megohms/1000 ft. min. at 500 VDC from overall shield through sheath to saline bath at 25°C.
Usable Temp. Range	Suitable for continuous use from +105°C to -55°C when stationary. Flexing service: +105°C to -25°C.
Bending Characteristics	All cables are suitable for flexing to a circle diameter of 6 cable diameters from +105°C to -55°C. Recommended flex diameter should be greater than 20 cable diameters for flexing at -40°C. For continuous flexing applications consult factory.
Crosstalk	Common-mode, adjacent trios: Worst case, -50 db @ 1 Mhz; totaling to -100 db below 100 kHz. (Ref. MIL-C-23437 for test method.) For 100 ft. test length.
Capacitance (pf/d/ft.)	16 AWG, 60 Wire-Wire, 108 Wire-Shield, 18 AWG, 53 Wire-Wire, 96 Wire-Shield, 20 AWG, 44 Wire-Wire, 80 Wire-Shield, 22 AWG, 38 Wire-Wire, 68 Wire-Shield, 24 AWG, 33 Wire-Wire, 59 Wire-Shield, 26 AWG, 28 Wire-Wire, 51 Wire-Shield

	PART NUMBER	UNSHIELDED	GAUGE OF CONDUCTOR	JACKET WALL (INCHES)	JACKET WALL (MM)	NOM. CABLE DIAM. (INCHES)	NOM. CABLE DIAM. (MM)	NOM. WEIGHT LBS. PER 1000 FEET	NOM. WEIGHT KG/KM PER 1000 FEET	NUMBER OF TRIADS	OVERALL CONDUCTOR DIAM. (INCHES)	OVERALL CONDUCTOR DIAM. (MM)
Enter quantity in feet	NTT726J	1	26	0.062	1.60	0.587	14.91	173	257	7	0.153	3.80
Enter quantity in feet	NTT1226J	1	26	0.062	1.60	0.764	19.41	275	409	12	0.153	3.80
Enter quantity in feet	NTT1926J	1	26	0.085	2.10	0.939	23.90	442	658	19	0.153	3.80
Enter quantity in feet	NTT2726J	1	26	0.085	2.10	1.116	28.30	599	891	27	0.153	3.80
Enter quantity in feet	NTT3726J	1	26	0.085	2.10	1.245	31.60	781	1162	37	0.153	3.80
Enter quantity in feet	NTT4826J	1	26	0.085	2.10	1.413	35.90	985	1466	48	0.153	3.80
Enter quantity in feet	NTT724J	1	24	0.062	1.60	0.62	15.75	198	295	7	0.164	4.10
Enter quantity in feet	NTT1224J	1	24	0.085	2.10	0.81	20.57	316	470	12	0.164	4.10
Enter quantity in feet	NTT1924J	1	24	0.085	2.10	0.994	25.20	507	754	19	0.164	4.10
Enter quantity in feet	NTT2724J	1	24	0.085	2.10	1.184	30.10	690	1027	27	0.164	4.10
Enter quantity in feet	NTT3724J	1	24	0.085	2.10	1.322	33.60	903	1344	37	0.164	4.10
Enter quantity in feet	NTT722J	1	22	0.062	1.60	0.659	16.74	235	350	7	0.177	4.50
Enter quantity in feet	NTT1222J	1	22	0.085	2.10	0.91	23.10	416	619	12	0.177	4.50
Enter quantity in feet	NTT1922J	1	22	0.085	2.10	1.059	26.90	606	902	19	0.177	4.50
Enter quantity in feet	NTT2722J	1	22	0.085	2.10	1.264	32.10	829	1234	27	0.177	4.50
Enter quantity in feet	NTT3722J	1	22	0.085	2.10	1.413	35.90	1090	1622	37	0.177	4.50
Enter quantity in feet	NTT720J	1	20	0.062	1.60	0.713	18.11	294	437	7	0.195	4.90
Enter quantity in feet	NTT1220J	1	20	0.085	2.10	0.985	25.00	517	769	12	0.195	4.90
Enter quantity in feet	NTT1920J	1	20	0.085	2.10	1.149	29.20	762	1134	19	0.195	4.90
Enter quantity in feet	NTT2720J	1	20	0.085	2.10	1.375	34.90	1049	1561	27	0.195	4.90
Enter quantity in feet	NTT718J	1	18	0.062	1.60	0.767	19.48	366	545	7	0.213	5.40
Enter quantity in feet	NTT1218J	1	18	0.085	2.10	1.06	26.90	642	955	12	0.213	5.40
Enter quantity in feet	NTT1918J	1	18	0.085	2.10	1.239	31.50	955	1421	19	0.213	5.40
Enter quantity in feet	NTT716J	1	16	0.085	2.10	0.9	22.90	471	701	7	0.242	6.10
Enter quantity in feet	NTT1216J	1	16	0.085	2.10	1.181	30.00	759	1129	12	0.242	6.10
Enter quantity in feet	NTT1916J	1	16	0.085	2.10	1.384	35.20	1133	1686	19	0.242	6.10

Shielded Signal and Control Cables Military and UL Grade

NTT Series - Cabled Shielded Trios, 7 to 48 Without Overall Shield