Armoured 6.8mm Mineral Insulated Electric Heating Cable

Magnesium Oxide Insulated Slender Armored Electric Heating Cable (Sheathed heating cable, mineral insulated heating cable) is made of metal protection tube, inorganic insulation (e.g., magnesium oxide, alumina, etc.), good performance nickel and chromium alloy resistance wire or other metal or metal alloy conductors. It possesses good properties of anti-pressure, anti-vibration, flexible, energy saving, impervious, resistant to radiation, explosion-proof, safe and reliable, easy installation, high mechanical strength, long life and so on. It has been widely used  in aerospace, nuclear power, petroleum, chemical, natural gas, military industry, machinery, electricity, energy and other industrial sectors for heating, heat preservation, heat tracing,Heating and heat preservation of gas and fluid, heating and tracing of container pipelines, etc.

 

The highest heating temperature of armoured heating cable produced is 860℃.

The cable is composed of a continuous seamless metal sheath, one or more heating wires and a tightly compacted magnesium oxide insulation layer, as shown in the figure.

 

Armour heating element is composed of heating cable in the middle section, cold cable at both ends, connector and terminal, as shown in the figure below, which can be easily connected to power supply.

 

In addition, heating cable can be made into different shapes and different power heating elements (single core, double core etc, diameter, height, power according to user requirements).

 

Cable Structure

Application

 

Nuclear industry	construction -- asphalt heating
Metal manufacturing industry- low melting point alloy melting	tank/vessel heating
Shell heating for the extruder	Heat tracing for high temperature industrial piping
anticoagulation and viscosity reduction of process media	All kinds of industrial electric heaters

 

 

Specification

Heating cable instruction code

 

MI SS-B 16K6560/60/2520/220/E1

NO. 1 2 3 4 5 6 7

 

No.	Instruction
1	Sheath material	Stainless steel
2	structure of cable components	shown in table 1
3	cable codes	shown in table 2, 3 and 4
4	length of heating cable	In meter
5	Heating cable power	In Watt
6	heating cable voltage	In Volt
7	heating cable voltage	See table 5

 

 

 

 

 

 

 

 

 

 

 

Cable Code

1 6 K 6560

No 1 2 3 4

 

Serial NO.	Instruction
1	core number	1 or 2
2	Voltage grade	3=300V, 6=600V
3	conductor materials	K,N,C
4	cold resistance ×1000	6560=6.56Ω/m×1000

 

 

 

 

 

 

Table 1 Structure of Cable Element

Table 2 Heating Cable Specification (600V Single Core)

 

Cable Code	Diameter	Nominal resistance at +20℃	Maximum manufacturing length	Unit weight
	mm	Ω/m	m	kg/km
16C2.1	6.8	0.0021	130	184.2
16C3.4	5.9	0.0034	173	138.7
16C5.3	5.3	0.0053	214	111.9
16C8.5	4.8	0.0085	261	91.8
16C13	4.3	0.013	325	73.7
16C21	4.0	0.021	376	63.8
16K40	5.8	0.04	179	164.7
16K50	5.4	0.05	206	140.1
16K60	5.2	0.06	222	126.7
16K80	4.8	0.08	261	106.8
16K100	4.7	0.1	200	100.0
16K120	4.5	0.12	200	90.2
16K160	6.5	0.16	200	77.7
16K200	5.9	0.2	200	110.0
16K250	5.3	0.25	215	92.1
16K400	4.7	0.4	280	74.0
16K500	4.5	0.5	300	66.2
16N630	4.3	0.63	185	94.1
16N1000	3.9	1.0	230	91.3
16N1600	3.6	1.6	270	88.2
16N2500	3.4	2.5	300	69.8
16N2800	3.4	2.8	300	76.0
16N3300	3.4	3.3	300	68.9
16N4000	3.2	4.0	350	68.5
16N5200	3.2	5.2	350	68.2
16N6300	3.2	6.3	350	55.5
16N10000	3.2	10	350	41.7

 

Table 3 Heating Cable Specification (600V Double Cores)

 

Cable Code	Diameter	Nominal resistance at +20℃	Maximum manufacturing length	Unit weight
	mm	Ω/m	m	kg/km
26K8.4	11.8	0.0084	43	636.1
26K13.4	9.8	0.0134	63	433.7
26K21	8.8	0.021	78	340.7
26K34	8.0	0.034	94	275.2
26K54	7.1	0.054	119	213.6
26K85	6.4	0.085	147	171.2
26K130	6.0	0.13	167	148.6
26K180	7.9	0.18	96	273.3
26K260	7.4	0.26	110	235.4
26K360	6.8	0.36	130	196.6
26K500	6.4	0.5	100	172.1
26K650	5.9	0.65	100	145.6
26K1000	5.7	1.0	100	134.1
26K1300	6.2	1.3	100	161.5
26K2000	5.8	2.0	100	139.8
26K3300	5.4	3.3	100	119.5
26N4600	5.8	4.6	100	139.0
26N8000	5.4	8.0	100	119.2
26N13000	5.0	13.0	100	101.3
26N27000	4.8	27.0	100	92.6
26N40000	4.6	40.0	100	84.9
26N60000	4.4	60.0	100	77.5
26N72000	4.2	72.0	100	70.6

 

 

Table 4 Heating Cable Specification (300V Double Cores)

 

Cable Code	Diameter	Nominal resistance at +20℃		Maximum manufacturing length		Unit weight
	mm		Ω/m		m	kg/km
23K210	5.2		0.21		222	118.5
23K300	4.8		0.3		261	99.4
23K400	4.8		0.4		261	97.7
23K480	4.8		0.48		261	96.5
23K650	4.6		0.65		284	87.8
23K1000	4.1		1.0		100	69.3
23K1300	3.8		1.3		100	59.3
23K2000	5.0		2.0		100	105.3
23K2400	4.8		2.4		100	96.2
23K3000	4.6		3.0		100	87.8
23N4600	4.8		4.6		100	96.8
23N7500	4.6		7.5		100	87.4
23N11200	4.4		11.2		100	79.2
23N14000	4.2		14.0		100	72.0
23N18000	3.6		18.0		100	52.9
23N26000	3.6		26.0		100	52.5
23N40000	3.4		40.0		100	46.6
23N50000	4.0		50.0		100	64.2
23N60000	3.6		60.0		100	52.0
23N72000	3.4		72.0		100	46.4

Note:

The resistance value of 2-core cable in the above table is the measured value after the ends are twisted (i.e., single-core resistance X2);

If not specified, the sheath material is based on SS 321;

For the use of 660V voltage occasions, please contact our company professionals.

 

Table 5 terminal specifications

 

	Model: A, D, E		Model: B
Maximum Voltage (V)	Maximum Current (A)	Terminal Specification	Maximum Current (A)	Terminal Specification
600	15	E2	20	E1
600	20	E2	25	E2
600	30	E3	40	E2
600	50	E3	70	E2
600	70	E3	100	E3

 

Note 1: E1 means 1/2 "NPT;E2 means 3/4 "NPT;E3 represents 1 "NPT (taper thread);Additional connection thread requirements are available.

Note 2: the length of cold end cable with standard configuration is 2 meters. If increase or decrease of length required, please contact our professional personnel.

 

Corresponding reference table between the output power and sheath temperature

Anticorrosive specification

Material	Application
Sulfate	Not Recommend
Hydrochloric acid	Not Recommend
Hydrofluoric acid	Not Recommend
Phosphate	Not Recommend
Carbonate	According to the real Data
Organic acid	Applicable at any condition
Alkali metal	Acceptable
Sea water	Not Recommend
Chloride	Not Recommend

 

 

Explosion-proof instructions

MISS series heating cable with explosion-proof terminal, can be used in potential explosive environment. Authenticated by the Chinese CQST, in accordance with Chinese GB3836 explosion-proof electrical standards, they can be applicable to Ⅱ A, Ⅱ B, Ⅱ C (C1D2) level of explosion-proof electrical equipment.