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A few days ago, the official website of Shaanxi Provincial Bureau of Quality and Technical Supervision announced that in the second quarter of 2016, Shaanxi Provincial Quality Supervision Bureau organized relevant product quality inspection agencies to spot check a total of 13 batches of power cable products from 13 wire and cable manufacturers in Xi'an and Xixian New District, and after inspection, 5 batches of samples were comprehensively judged to be unqualified
.
In this spot check, the Shaanxi Provincial Quality Supervision Bureau in accordance with GB/T 12706-2008 "rated voltage 1 kV (Um=1.
2 kV) to 35 kV (Um=40.
5 kV) extruded insulated power cables and accessories" and other relevant standards and the current effective enterprise standards and product explicit quality requirements for power cable products, the average thickness of the insulation of power cable products, the thickness of the thinnest insulation, the average thickness of the non-metallic sheath, the thinnest thickness of the non-metallic sheath, the conductor resistance, the tensile strength before insulation aging, Tensile strength after insulation aging, elongation at break before insulation aging, elongation at break after insulation aging, change rate of tensile strength before and after insulation aging, change rate of elongation at break before and after insulation aging, low-temperature bending of PVC insulation, low-temperature tensile of PVC insulation, high-temperature pressure of insulation, thermal shock of PVC insulation were tested
.
The 5 batches of products found in the spot check that did not meet the requirements of the standard involved the change rate of tensile strength before and after insulation aging, the change rate of elongation at break before and after insulation aging, insulation heat extension, insulation heat shrinkage, and sheath weight loss
.
The specific details of the unqualified power cable samples are as follows:
A few days ago, the official website of Shaanxi Provincial Bureau of Quality and Technical Supervision announced that in the second quarter of 2016, Shaanxi Provincial Quality Supervision Bureau organized relevant product quality inspection agencies to spot check a total of 13 batches of power cable products from 13 wire and cable manufacturers in Xi'an and Xixian New District, and after inspection, 5 batches of samples were comprehensively judged to be unqualified
.
In this spot check, the Shaanxi Provincial Quality Supervision Bureau in accordance with GB/T 12706-2008 "rated voltage 1 kV (Um=1.
2 kV) to 35 kV (Um=40.
5 kV) extruded insulated power cables and accessories" and other relevant standards and the current effective enterprise standards and product explicit quality requirements for power cable products, the average thickness of the insulation of power cable products, the thickness of the thinnest insulation, the average thickness of the non-metallic sheath, the thinnest thickness of the non-metallic sheath, the conductor resistance, the tensile strength before insulation aging, Tensile strength after insulation aging, elongation at break before insulation aging, elongation at break after insulation aging, change rate of tensile strength before and after insulation aging, change rate of elongation at break before and after insulation aging, low-temperature bending of PVC insulation, low-temperature tensile of PVC insulation, high-temperature pressure of insulation, thermal shock of PVC insulation were tested
.
The 5 batches of products found in the spot check that did not meet the requirements of the standard involved the change rate of tensile strength before and after insulation aging, the change rate of elongation at break before and after insulation aging, insulation heat extension, insulation heat shrinkage, and sheath weight loss
.
The specific details of the unqualified power cable samples are as follows:
