Products Description

Instrument pair cable consists of one or multiple twisted conductor pairs, built for balanced instrument signal transmission.

Twisted-pair layout lowers EMI and crosstalk between signal channels. Mostly used for 4-20mA analog and RS485 digital control signals.

Unlike single-core multicore cable, signals run on paired conductors. Marine-grade versions support ship and offshore installation, with optional overall or individual pair shielding.

Conductor	Class 5 tinned copper
Cross-section	1.0-2.5mm²
Temperature Range	-20℃ ~ +80℃
Marine certifications	ABS/DNV/LR/CCS
Usage scenario	Vessels, offshore platforms

Application

marine application

Certificate

ISO Quality Management System Certificate
ABS/DNV/LR/CCS Approved Certificate

certificate 03

1.Construction
S/N	Construction		Requirement
1	Conductor		2 Class 2 copper conductor
2	Fire resistance		Mica tape
2	Insulation		XLPE
3	Individual Shield		+ Copper-plastic composite tape + drain wire
4	Overall shield		+ Copper-plastic composite tape + drain wire
5	Isolation		PVC
6	Armor		Galvanized steel wire armor
2. Cable identification Core identification: Red, White, Blue + number code Sheath color: Black 3. Standard compliance GB/T 34016-2017, IEC 60332-3-22, IEC60331, TICW/06-2009, Q/WHY 09
4.Application
S/N	Item				Technical requirement
1	Rated voltage				AC 300/500V
2	Operating temperature				'-15~90℃
S/N	No. of cores × sectional area	Structure of conductor	Approx. dia. of conductor	Nominal thk. of insulation	Nominal thk.of sheath	Approx. OD of cable	Approx. weight of cable
	no.× sqmm	no./mm	mm	mm	mm	mm	kg/km
1	10×3×2.5	7/0.68	2.0	0.6	1.7	42.8	2991
5. Electrical characteristics
S/N	No. of cores × sectional area ×		Max. DC resistance of conductor@20℃ 20℃			Voltage withstand test
	no.× sqmm		Ω/km			kV/min,no breakdown
1	10×3×2.5		7.41			1/1

Huayu Instrument Pair Cable Benefit

70dB+ shielding cuts EMI from ship-mounted motors and power equipment
Low-capacitance twisted-pair design, keeps solid 4-20mA and RS485 signals up to 1200m
Class 5 tinned copper conductors, works well for tight cabin routing and frequent bending
55dB+ crosstalk rejection, avoids cross-talk between different signal pairs
Insulation resistance ≥5000MΩ·km, minimal signal drift during long-term offshore operation
Operating range -20℃ ~ +80℃, stands up to salt-fog, oil and moisture
Optional individual-pair or overall shielding, flame-retardant build available
ABS, DNV, LR marine certifications; each batch fully tested before shipment