GB/T 34926-2017 in English
VALIDCorrugated copper metallic sheath mica tape mineral insulated cables and their terminations with a rated voltage up to and including 0.6/ 1 kV
- Issued on:2017-11-01
- Implemented on:2018-05-01
- File Format:PDF
- Delivery:Via email within 5 business days
$563.00
| Standard No: | GB/T 34926-2017 |
| Document status: | VALID |
| Title in English: | Corrugated copper metallic sheath mica tape mineral insulated cables and their terminations with a rated voltage up to and including 0.6/ 1 kV |
| Title in Chinese: | 额定电压0.6/1kV及以下云母带矿物绝缘波纹铜护套电缆及终端 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2017-11-01 |
| Implemented on: | 2018-05-01 |
| ICS Classification: | 29.060.20-Cables |
| Chinese Classification: | K13-Cable and its accessory |
| Professional Classification: | GB-National Standard |
| Related Keywords: | metallic sheath mica tape mineral
mica tape mineral mica tape synthetic mica tape double-sided synthetic mica tape |
| Related Topics: | GBT34926
GB/T 34926-2017 gb/t34926-2017 |
《GB/T 34926-2017额定电压0.6/1kV及以下云母带矿物绝缘波纹铜护套电缆及终端》由TC213（全国电线电缆标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
Standard Overview and Technical Characteristics
GB/T 34926-2017 specifies the design, manufacturing and inspection requirements for mica tape mineral insulated corrugated copper sheathed cables with rated voltages of 0.6/1kV and below. The cable uses synthetic mica tape or burned mica tape as insulation material, and the corrugated copper sheath has both mechanical protection and grounding functions, which is particularly suitable for places with high fire risks.
Core Parameter Comparison
| Key Indicators | 450/750V Control Cable | 0.6/1kV Power Cable |
|---|---|---|
| Insulation Thickness (mm) | 0.40 (Uniform Value) | 0.45-2.20 (Single/Multi-core) |
| Copper Sheath Thickness (mm) | 0.40 (19 cores and below) | 0.40-0.70 (Based on Cross-sectional Area) |
| Bending Radius (Multiples of Outer Diameter D) | 6D-20D (divided into 4 gradients) | |
| Fire resistance | 950-1000℃/180min(BS 6387/BS 8491) | |
Technical Innovations
1. Insulation system design
Double-layer mica tape wrapping structure: general type uses double-sided synthetic mica tape (mica content ≥55%), low-smoke and halogen-free type uses burned mica tape (mica content ≥65%), and the volume resistivity remains ≥5.0×1012Ω·m at high temperature.
2. Corrugated copper sheath process
The copper strip conforms to T2M/TU2M standard in GB/T2059-2008 and needs to pass the following tests after welding and corrugation:
- Bending test: Cable with D≤20mm is bent repeatedly around a 6D radius wheel
- Flattening test: After being flattened to 90% of the original outer diameter, it still maintains airtightness
Key test requirements
| Test type | Item | Judgment standard |
|---|---|---|
| Electrical test | 4h power frequency withstand voltage | 3.5kV without breakdown |
| Insulation resistance | ≥100MΩ·km(20℃) | |
| Sheath DC resistance | ≤GB/T3956 Class 2 conductor limit | |
| Mechanical test | Air tightness | 0.25-0.35MPa air pressure without drop for 2h |
| Fire resistance test | D≤20mm according to BS6387 CWZ grade |
Application implementation suggestions
- Selection principle: WDZB-RTTYZ type low-smoke halogen-free flame retardant cable is preferred in high-risk fire areas
- Installation specifications: Ambient temperature ≥ 0℃ (non-metallic sheathed cable), bending radius ≥ 6D
- Acceptance points: Focus on checking the integrity of the copper sheath weld (X-ray flaw detection recommended)
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 11017.1-2024 in English
Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 66 kV(Um=72.5 kV)and 110 kV(Um=126 kV)—Part 1: Test methods and requirements
2024-09-29 -
GB/T 22078.1-2008 in English
Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 500 kV (Um=550 kV) - Part1: Power cable systems-cables with cross-linked polyethylen
2008-06-30 -
GB/T 12527-2008 in English
Aerial insulated cables for rated voltages up to and including 1kV
2008-06-30 -
GB/T 9326.1-2008 in English
Oil-filled paper or polypropylene paper laminate insulated metal-sheathed cables and accessories for alternating voltages up to and including 500kV - Part 1: Test
2008-06-30 -
GB/T 21204.1-2007 in English
Multicore and symmetrical pair/quad cables for digitai communications to be used in harsh environments-Part 1:Generic specifications
2007-12-03 -
GB/T 5441-2016 in English
Test methods for communication cable
2016-04-25 -
GB/T 18014-2008 in English
PVC insulated wire for ignition of electric detonators
2008-06-18 -
GB/T 33606-2017 in English
Flexible and torsion resistant cables of rated voltages from 6 kV(Um=7.2 kV)up to 35 kV(Um=40.5 kV)for wind power generation
2017-05-12 -
GB/T 14049-2008 in English
Aerial insulated cables for rated voltage of 10kV
2008-06-30 -
GB/T 2952.1-2008 in English
Protective coverings for electric cables - Part 1: General
1982-03-22
