Product Standard
Carried standard：Q/320282DCE073-2007. The enterprise standard has
been drawn up according to standards
IEC60092、IEC60245、IEC60332、IEC60502 and DIN VDE0298-300,etc.
Conductors shall be flexible copper and adopt rope-lay construction
for 6mm² and above. The conductors shall be in accordance with
standard GB/T3956, which is equivalent to standards IEC60228/DIN
VDE0293 (HD308).
The base material of insulation is EPR, which has properties of
ozone resistance and heat-proof aging.
Identification of insulation cores shall comply with requirements
of GB5013.
Sheath will be rubber made from CPE、PCP or CSM, which has
properties of oil and freezing resistance.
The color for outer sheath is generally black or customized
according to special needs.
Mark of Sheath: For example Maker, FDZ-GEYH 1*240 mm² 0.6/1kv etc.
8.Electrical properties
8.1 Rated voltage(AC): U0/U 600/1000V，900/1500V，1800/3000V.
U0：Line-to-earth voltage U: Line-to-line voltage
8.2 AC test voltage: 3500V for 5min、4500V for 5min、6800V for 5min.
8.3 Current-carrying capacity: For single cable laying the outer
surface at 30℃, it allows continues ACADCA.
9.Thermal properties
9.1 Max. permissible continues operating temperature: 90℃.
9.2 Max. permissible short-circuit temperature: 250℃ (No more than
5 seconds).
9.3 Min. permissible temperature for operation, installation,
transport and storage: -40℃
10.Mechanical properties
10.1 Max. permissible tension load is 15N/ mm², considering the
full copper section.
10.2 Min. bending radius is five times of outer diameter of the
cable.
11.Special performances
11.1 Oil resistance: Test according to DIN EN60811-2-1.
11.2 Flame-retardant: Test according to IEC60332.2 or DIN
EN50265-2-1
11.3 Good performance in Resistance to ultra violet radiation
11.4 Max. permissible tension load of cable: 15N/mm²
11.5 Cables of particular production have good performance of fume
resistance.
Correction factors for current-carrying capacity at different
ambient air temperatures
Operating temperature℃ | Ambient Air temperature ℃ | 15
| 20
| 25
| 30
| 35
| 40
| 45
| 50
| 55
| 60
|
90 | Correction factors | 1.118 | 1.080 | 1.041 | 1.000 | 0.957 | 0.913 | 0.866 | 0.816 | 0.764 | 0.707 |
Correction factors when laying in pipe (reference) Correction
factors when laying in bundle (reference)
No. of cables | Correction factors |
|
No. of layers | Simultaneity factor |
2～4 | 0.80 |
| 1 | 0.8 | 0.5 |
5～8 | 0.60 |
| 1 | 0.64 | 0.80 | 0.95 |
9～12 | 0.50 |
| 2 | 0.50 | 0.75 | 0.90 |
12 | 0.45 |
| 3 | 0.45 | 0.70 | 0.85 |
Note: The volume of heating cables in pipe is about Note:
Simultaneity factor is the ratio of the No. 40 percent of whole
cable volume. of full load cables.
Correction factors when laying in coordinate (reference)
Arrange | Ratio | Correction factors |
Two triangulates (Horizon) | ＜1.0 | 0.93 |
Three triangulates (Horizon) | ＜1.5 | 0.93 |
Three triangulates (Vertical) | 3.9～3.0 | 0.99 |
2.9～2.0 | 0.98 |
1.9～1.0 | 0.96 |
＜0.5 | 0.85 |
Note: e means the distance of cable series, while De means the
outer diameter of cable.
