Mica tape selection and wrapping application

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Quality Control of Fire resistance Wire & Cable

Due to many factors and  links are affected, the quality requirements of the fire-resistand wire and cable are very strict. For cable manufacturers, there are mainly three aspects to control quality of cables such as raw material quality control, production process intermediate quality control and finished-products quality control. The first aspect of raw material quality control is mainly the choice of fire-resistant mica tapes and the second aspect of intermediate quality control in the wrapping process.
Based on our years of tracking, learning and data accumulation in the practical application of fire resistance wire & cable, the following suggestions are put forward on the best selection of mica tapes and optimal wrapping overlap rates for fire resistance wire & cable.

Firwo®-FP Advantages of coated mica tape in application

• Mica tape consumption saving 50%
• Labor efficiency improvement 20%
• Saving of injection materials 18%

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Fire-resistant Test Introduction and Wrapping Suggestion

Test Standard	Duration of test (minutes)	Voltage	Temp.	Test condition	Type of Mica Tape to be advised to pass each  test standard	Min no. Of Layers	Min. overlapping
GB/T19216.11-2003	90	600/1000V	750℃	Exposed to flame	Phlogopite mica tape	2	30%
					Synthetic mica tape	2	10%
					Calcined  muscovite mica tape	1	20%
					Coated mica tape (coated on mica paper layer)	1	20%
					Coated mica tape(coated on glass fiber layer)	1	15%
IEC 60331	90	1000V	750℃	Exposed to flame	Phlogopite mica tape	2	30%
					Synthetic mica tape	2	10%
					Calcined  muscovite mica tape	1	20%
					Coated mica tape (coated on mica paper layer)	1	20%
					Coated mica tape(coated on glass fiber layer)	1	15%
EN 50200	90	600/1000V	850℃	Exposed to flame with mechanical shocks	Special single side phlogopite mica tape	2	50%
					Synthetic mica tape	2	30%
					Calcined  muscovite mica tape	2	20%
					Coated mica tape (coated on mica paper layer)	2	20%
					Coated mica tape(coated on glass fiber layer)	2	0%
BS 6387 cat. C	180	600/1000V	950℃	Exposed to flame	Special single side phlogopite mica tape	3	50%
					Single (double) sides synthetic mica tape	2	50%
					Single side calcined  muscovite mica tape	2	30%
					Coated mica tape (coated on mica paper layer)	2	30%
					Coated synthetic mica tape	2	20%
					Coated calcined mica tape	2	20%
					Coated mica tape(coated on glass fiber layer)	2	5%
BS 6387 cat. W	30	600/1000V	650℃	Exposed to flame with Water Spray	Single side calcined  muscovite mica tape	2	50%
					Coated mica tape(coated on glass fiber layer)	2	20%
BS 6387 cat. Z	15	600/1000V	950℃	Exposed to flame with mechanical shock	Special single side phlogopite mica tape	3	50%
					Single side calcined  muscovite mica tape	2	50%
					Coated mica tape(coated on glass fiber layer)	2	20%
BS 8434-2	120	600/1000V	950℃	60 min shock + 60 min shock & water	Single side calcined  muscovite mica tape	3	30%
					Coated mica tape(coated on glass fiber layer)	2	50%
DIN 4102 E30	30	600/1000V	900℃	Temperature increase according to ISO 178.	Single side calcined  muscovite mica tape	2	50%
					Coated mica tape(coated on glass fiber layer)	2	20%
AS/NZS 3013	120	1000V	1050℃	Exposed to flame	Single side calcined  mica tape	3	50%
					Coated synthetic mica tape	3	30%
					Coated calcined mica tape	3	30%
					Coated mica tape(coated on glass fiber layer)	2	50%

Preferable Taping Speed (RPM): 1800-2500

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