This part details the technical requirements for rubber insulated elevator cables with rated voltage of 300/500V. Each cable shall comply with the corresponding requirements specified in GB 5013.1 and the special requirements of this part. GB 5013.5-1997 Rubber insulated cables with rated voltage of 450/750V and below Part 5: Elevator cables GB5013.5-1997 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Rubber insulaled cables of ratedroltages ap to and including 450/750 V Part 5: Lift cables
1 Overview
GB 5013.51997
idt IEC 245-5: 1994
Replaces GB 5013. 487
Part 5 of GB 5013 specifies the technical requirements for rubber insulated lift cables with a rated voltage of 300/500 V. Each cable shall comply with the corresponding requirements specified in GB 5013.1 and the special requirements of this part. 1.2 References
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. The versions shown are valid at the time of publication of this standard. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2951.1-1997 General test methods for cable insulation and sheathing materials Part 1: General test methods Section 1, Thickness and size measurement Mechanical properties test GB/T2951.2-1997 General test methods for cable insulation and sheathing materials Part 1: General test methods Section 2: Heat aging test methods
GB/T2951.5: 1997 General test methods for cable insulation and sheathing materials Part 2: Special test methods for elastomer mixtures Section 1: Oxygen resistance test Hot extension test Mineral oil immersion test GB5013.1-1997 Rubber insulated relays with rated voltages of 450/750V and below Part 1: General requirements GB5013.2-1997 Rubber insulated cables with rated voltages of 450/750V and below Part 2: Test methods GB/T3956-1997 Cable conductors
2 General purpose braided, high strength rubber, oxybutylene or other synthetic elastomer sheathed elevator cables 12.1 Type
Braided elevator cable:
High strength rubber sheathed elevator cable
245 IEC 70 (YTB):
245 IEC 74 (YT):
Chloro! Or other equivalent synthetic elastomer rubber sheathed elevator cable: 245 IEC: 75 (YTF). 2.2 Rated voltage
300/500 V
2.3 Structure
2.3.1 Conductor
1) Standards for high-speed elevator cables or old elevator cables for high-rise buildings are under consideration, approved by the State Bureau of Technical Supervision on October 13, 1997 and implemented on October 1, 1998
Number of cores: 6, 9, 12, 18.24 or 301).
GB5013.5-1997
Conductors should meet the requirements of the fifth conductor in GB/T3956-1997, but the maximum resistance of the conductor at 20C should be increased by 5%. Single wires can be tin-free or tin-plated.
2.3.2 Insulation layer
An insulation layer made of suitable material can be coated on the outside of each conductor. For relevant requirements, see 5.1.3 of GB5013.1.2.3-3 Insulation
The insulation extruded on each conductor should be IE1 type rubber mixture. The insulation thickness should comply with the specified value in column 2 of Table 1. 2.3.4 Insulated core protective layer
A fabric braid or equivalent protective cover can be optionally coated on the outside of each insulated core. 2.3.5 Center cushion core
If the center cushion core of the elevator relay contains tensile elements, it should have sufficient tensile strength. 2.3.6 Insulated core, center cushion core and filler (if any) The cabled insulated core and optional filler should be twisted around the central core. The filler (if any) should be composed of dry cotton yarn or other suitable fiber material. The center cushion core should be composed of hemp, jute or similar material. It may have load-bearing elements; if the central core is made of metal material, it should be covered with non-conductive material.
The purpose of the coating is to prevent damage to the insulated core due to broken wires of the metal load-bearing elements. The manufacturer should indicate whether the cable has load-bearing elements. For cables with 6, 9 and 12 cores, the cores should be cabled in one layer; for cables with more than 12 cores, the cores should be cabled in one or two layers. The cross-section of the cabled core should be substantially circular. The identification of the insulated core should be in accordance with 4.1 or 4.2 of GB5013.1. 2.3.7 Outer covering layer
2.3.7.1 Braided elevator cable
The insulated core should be optionally covered with an inner fabric braid or tape layer, and covered with an outer fabric braid. The inner fabric braid (if any) should be made of cotton yarn or similar material. Wrap it with a fabric tape or similar tape, spirally wrap it, and the wrapping overlap rate should be at least 1mm. The outer braid should be composed of suitable fabric material. For moisture-proof and flame-retardant braided elevator cables, the outer braid should be soaked with moisture-proof and cation-proof materials. Manufacturers should indicate whether the elevator cable is flame-retardant. 2.3.7.2 The insulated cores of high-strength rubber, fluoroprene or other equivalent synthetic elastomer rubber sheathed elevator cables should be spirally wrapped with a binding tape or covered with an inner braided layer and a sheath after being cabled. The spiral binding tape should be a tape of cotton yarn or similar material. The inner braided layer should be made of fabric material or similar material. The sheath should be:
245IEC74 (YT) uses SE3 type rubber mixture 245IEC75 (YTF) uses SE4 type rubber mixture. Chloroprene or other equivalent synthetic elastomer rubber sheathed cables should be flame-retardant. The sheath thickness should comply with the specified values ​​in column 3 of Table 1. 2. 3.8 Outer diameter
The outer diameter of these relays is not specified.
1) does not exclude cable structures containing other core numbers and more core numbers. 2.4 Tests
GB 5013-51997
The tests and inspections specified in Table 2 shall be used to check whether the requirements of 2.3 are met. 2.5 Guidelines for use
In normal use, the maximum temperature of the conductor is 60°C. Note: Other guidelines are under consideration.
Table 1 Structural dimensions of 245IEC70 (YTB), 245IEC74 (YT) and 245IEC75 (YTF) type cables
Number of cores and nominal conductor cross-section
(9×0.75)
(12×0.75)
(18×0.75)
(24X×0.75)
(30X0.75)
Specified values ​​of insulation thickness\】
Specified values ​​of sheath thickness
1) The numbers in brackets are non-preferred core numbers and conductor cross-sections, which are under consideration. 2) If the insulated core is covered with a fabric braid or equivalent protective layer, the insulation thickness of the 0.75 mm insulated core can be reduced to 0.6 mm
Table 2245IEC70 (YTB), 245TEC74 (YT) and 245JIEC75 (YTF) cables test number
Test items
Electrical performance test
Conductor voltage
Insulated core voltage test according to the specified insulation thickness
0. 6 mm is 1 501 V
200V for 0.6mm and above
2000V electric music test for quality cable
Structural dimension inspection
Structural inspection
Insulation thickness measurement
Sheath thickness measurementwwW.bzxz.Net
Insulation mechanical properties
Tensile test before aging
Tensile test after aging in air oven
Tensile test after aging in oxygen bomb
Hot extension test
Test type
Test method
CB(GB/T)
5013.1 and 5013.2
2951 -5
Tea number
Inspection and manual test
Test items
Mechanical properties of sheath
Tensile test before aging
Tensile test after air oven aging
Tensile test after oil immersion\
Hot extension test
Mechanical strength of finished cable
Tensile strength of central cushion core with load-bearing element
Static bending test
Flame retardancy test"
Resistance test"
Long length hanging ring test
1) Only applicable to 245IEC75 (YTF) type cable. GB 5013.5-1997
Table 2 (end)
Test type
Test method
GB(GB/T)
Under consideration
2) Applicable to 245IEC75(YTF) type and 245[EC70(YT13) type cable with flame retardant braid. 3) Applicable only to 245IEC70(YTB) type cable. Article No.
8.1.3.1
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