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6kV～35kV銅芯、鋁芯、交聯(lián)聚乙烯絕緣電力電纜
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產(chǎn)品標(biāo)準(zhǔn)Standard


    本產(chǎn)品按GB/T12706-2008《額定電壓1kV到35kV擠包絕緣電力電纜及附件 第2部分 額定電壓6kV和30kV電纜  第3部分 額定電壓35kV電纜》標(biāo)準(zhǔn)生產(chǎn)，同時(shí)還可根據(jù)用戶需要按國(guó)際電工委員會(huì)推薦標(biāo)準(zhǔn)IEC、英國(guó)標(biāo)準(zhǔn)、德國(guó)標(biāo)準(zhǔn)及美國(guó)標(biāo)準(zhǔn)生產(chǎn)。
    The product is manufactured according to the standard of GB12706 or IEC、BS、DIN and ICEA upon request.


適用范圍Applications


    本產(chǎn)品適用于工頻額定電壓3.6/6kV～26/35kV輸配電線路作配送電能子用。
    The product is suitable for use in power transmission and distribution lines with rated power frequency voltage 3.6/6kV～26/35kV.


使用特性O(shè)perating characteristics


· 工頻額定電壓U0/U為3.6/6kV～26/35kV。
   Rated power-frepuency voltage U0/U: 3.6/6kV～26/35kV.
· 電纜導(dǎo)體的上限允許工作溫度：90℃。
   Max.admissible operating temperature of the conductor:90℃.
· 短路時(shí)（上限時(shí)間不超過5s）電纜導(dǎo)體的上限溫度不超過2500C。
   Max. short-circurt temperature of conductor shall not exceed 2500C.
(5s maximum duration)
· 電纜敷設(shè)時(shí)環(huán)境溫度應(yīng)不低于0℃。
   The ambient temperature under installation should not below 0℃.
· 電纜彎曲半徑：三芯電纜不小于電纜外徑15倍；單芯電纜不小于電纜外徑20倍。
   The bending radius of a single-core cable should not less than 20 times of the cable diameter. 
   The bending radius of a single-core cable should not less than 15 times of the cable diameter.


電纜額定電壓的選擇 Voltage designation


· 電纜的額定電壓應(yīng)適合于電纜系統(tǒng)的運(yùn)行狀況，用U0/U（Um）kV表示。
 U0－電纜設(shè)計(jì)用的導(dǎo)體對(duì)地或金屬屏蔽之間的額定工頻電壓；
 U－電纜設(shè)計(jì)用的導(dǎo)體間的額定工頻電壓；
 Um－設(shè)備可承受的“上限系統(tǒng)電壓”的上限值。
   The rated voltage of the cable for a given applixation shall be suitable for the operating conditions
   in the system in which the cable is used,and is expressed in the form of U0/U（Um）kv  Where:
  U0－The rated power-frequency voltage between conductors and earth metallic screen ,for which the cable designed;
  U － The rated power-frequency voltage between conductos, for which the cable designed;
  Um－ The maximum value of the“highest system voltage”for which the equipment may beused.
· 三相系統(tǒng)用電纜的U0值推薦如下表：
  he values of U0 recommened for cable to be used in three-phase systems are listed below:
U kV
U m kV
U 0 * kV
A 和 B 類系統(tǒng) System categories A and B
C 類系統(tǒng) Systems categories C
6
7.2
3.6
6
10
12
6
8.7
15
17.5
8.7
12
20
24
12
18
30
36
18
—
35
40.5
21
26
A類系統(tǒng)──該類系統(tǒng)任何一相導(dǎo)體與地和接地導(dǎo)體接觸時(shí)，能在1min內(nèi)與系統(tǒng)分離 B類系統(tǒng)──該類系統(tǒng)僅包括單相接地故障短時(shí)運(yùn)行的條件，接地故障時(shí)間應(yīng)不超過1h, 但在任何情況下，上限不超過8h每年接地故障總持續(xù)時(shí)間不超過125h； C類系統(tǒng)──不屬于A類、B類的系統(tǒng)。 System category A──This category comprises those systems in which any phase conductor that comes in contact with earth or an earth conductor. is disconnected from the system within 1 min. System category B─This category comprises those system which,under faultconditions,are operated,are operated for ashorttimewith one phase earthed.This period should not exceed 1 h..Fora longer period, not exceeding 8h on any occasion, can be tolerated.The total duration of earth faults in any year should not exceed 125h. System categeory C─This category comprises all systems which do not fall into A and B   電纜的型號(hào)Type of cable
型 號(hào)
Type
名          稱
Description
適  用  范  圍
Application
YJV
 
YJLV
 
YJY
 
YJLY
銅芯交聯(lián)聚乙烯絕緣聚氯乙烯護(hù)套電力電纜 Copper core XLPE insulated PVC sheathed power cable. 鋁芯交聯(lián)聚乙烯絕緣聚氯乙烯護(hù)套電力電纜 Aluminium core XLPE insulated PVC sheathed power cable. 銅芯交聯(lián)聚乙烯絕緣聚乙烯護(hù)套電力電纜 Copper core XLPE insulated PE sheathed power cable. 鋁芯交聯(lián)聚乙烯絕緣聚乙烯護(hù)套電力電纜 Aluminium core XLPE insulated PE sheathed power cable.      室內(nèi)、隧道及電纜溝等不能承受機(jī)械外力的場(chǎng)所。單芯電纜不允許敷設(shè)在磁性管道中。         For laying in doors、in tunnels and direct in ground, unable to bear external mechanical forces. Single core cable in magnetic duct is not permissible.
 
YJV22
 
 
YJLV22
 
 
YJV23
 
 
YJLV23
銅芯交聯(lián)聚乙烯絕緣鋼帶鎧裝聚氯乙烯護(hù)套電力電纜 Copper core XLPE insulated steel tape armoured PVC sheathed power cable. 鋁芯交聯(lián)聚乙烯絕緣鋼帶鎧裝聚氯乙烯護(hù)套電力電纜 Aluminium core XLPE insulated steel tape armoured PVC sheathed power cable. 銅芯交聯(lián)聚乙烯絕緣鋼帶鎧裝聚乙烯護(hù)套電力電纜 Copper core XLPE insulated steel tape armoured PE sheathed power cable. 鋁芯交聯(lián)聚乙烯絕緣鋼帶鎧裝聚乙烯護(hù)套電力電纜 Aluminium core XLPE insulated steel tape armoured PE sheathed power cable.    室內(nèi)、隧道、電纜溝等能承受機(jī)械外力的場(chǎng)所，但不能承受大的拉力。       For laying in doors、in tunnels and direct in ground, able to bear external mechanical forces，but unable to bear large pulling force.
 
YJV32
 
 
YJLV32
 
 
YJV33
 
 
YJLV33
 
銅芯交聯(lián)聚乙烯絕緣細(xì)鋼絲鎧裝聚氯乙烯護(hù)套電力電纜 Copper core XLPE insulated steel wire armoured PVC sheathed power cable. 鋁芯交聯(lián)聚乙烯絕緣細(xì)鋼絲鎧裝聚乙烯護(hù)套電力電纜 Aluminium core XLPE insulated steel wire armoured PVC sheathed power cable 銅芯交聯(lián)聚乙烯絕緣細(xì)鋼絲鎧裝聚乙烯護(hù)套電力電纜 Copper core XLPE insulated steel wire armoured PE sheathed power cable. 鋁芯交聯(lián)聚乙烯絕緣細(xì)鋼絲鎧裝聚乙烯護(hù)套電力電纜 Aluminium core XLPE insulated steel wire armoured PE sheathed power cable.    室內(nèi)、隧道、電纜溝、豎井等能承受機(jī)械外力和一定拉力的場(chǎng)所。       For laying in doors, in tunnels and direct in ground and wells, able to bear external mechanical forces and certain pulling force.
   生產(chǎn)范圍Production range of cable
型號(hào)
 
Type
芯數(shù)
 
Cores
額 定電 壓  Rated Voltage  kV
3.6/6
6/6
6/10
8.7/10
8.7/15
12/15
12/20
18/20
18/30
21/35
26/35
標(biāo)  稱  截  面   Nominal cross sectional of areas  mm2
YJV
YJLV
YJY
YJLY
1
25-630
25-630
25-630
35-630
50-630
50-630
50-630
3
25-630
25-630
25-630
25-630
25-400
25-400
25-400
YJV22
YJLV22
YJV23
YJLV23
1
25-630
25-630
25-630
35-630
50-630
50-630
50-630
3
25-630
25-630
25-630
35-600
50-400
50-400
50-400
YJV32
YJLV32
YJV33
YJLV33
1
25-630
25-630
25-630
35-630
50-400
50-400
50-240
3
25-630
25-630
25-400
35-400
50-240
50-240
50-185
注：?jiǎn)涡炬z裝電纜僅用于直流系統(tǒng)，若用于交流系統(tǒng)，應(yīng)采用非磁性材料的鎧裝層或采用隔磁措施。     Note: The single core armoured cables are used for D. C. system only. As for A. C. system, the magnetic isolation should be applied in the steel armoure wires or non-magnetical materials should be used.  電纜性能 20℃時(shí)導(dǎo)體較大直流電阻     Max. D.C. resistance of conductor at 20℃.
 
導(dǎo)體標(biāo)稱截面
Nominal cross sectional
areas of conductor
mm2
銅  導(dǎo)  體
Copper conductor
鋁  導(dǎo)  體
Aluminum conductor
2.5
7.41
12.1
4
4.61
7.41
6
3.08
4.61
10
1.83
3.08
16
1.15
1.91
25
0.727
1.200
35
0.524
0.868
50
0.387
0.641
70
0.268
0.443
95
0.193
0.320
120
0.153
0.253
150
0.124
0.206
185
0.0991
0.164
240
0.0754
0.125
300
0.0601
0.100
400
0.0470
0.078
500
0.0366
0.0605
630
0.0283
0.0469
  電壓試驗(yàn)、局部放電試驗(yàn)    Voltage test and partial discharge
序號(hào)
NO.
試  驗(yàn)  項(xiàng)  目
 
Test items
額 定 電 壓    Rated voltage  kV
3.6/6
6/6
6/10
8.7/10
8.7/15
12/20
18/30
21/35
26/35
1
工頻交流電壓試驗(yàn) Power frequency A.C. voltage test                kV/5min
11
15
22
31
45
53
65
2
四小時(shí)工頻交流電壓試驗(yàn)kV High-voltage test for 4 hours.  kV           
14.4
24
34.8
48
72
84
104
3
沖擊電壓試驗(yàn)            kV Impulse voltage test        kV
60
75
95
125
170
200
250
4
局部放電試驗(yàn)   1.73U0下較大局部放電量 Partial discharge test  Maximum discharge at 1.73 U0               pC
5
5
5
5
5
5
5
 
導(dǎo)體短路電流    Short-circuit current.
導(dǎo) 體 標(biāo) 稱 截 面
Nominal cross sectional
areas of conductor
mm2
導(dǎo)體較大允許短路電流 (1秒)   A
Conductor maximum short circuit current (1s)
 
銅 導(dǎo) 體
Copper conductor
 
鋁 導(dǎo) 體
Aluminum conductor
10
1.51
0.986
16
2.39
1.56
25
3.69
2.42
35
5.15
3.37
50
7.31
4.79
70
10.2
6.68
95
13.8
9.03
120
17.4
11.4
150
21.7
14.2
185
26.7
17.5
240
34.6
22.6
300
43.1
28.2
400
57.4
37.6
500
71.7
47.0
630
88.8
58.0
 
電容、電感（參考值）    Capacitance and inductance of cable (reference value)
  ◇ 電容  Capacitance
導(dǎo)體標(biāo)稱截面
Nominal cross
sectional area of conductor
mm2
額 定 電 壓（kV）    Rated voltages
3.6/6
6/6
6/10
8.7/10
8.7/15
12/20
 
18/20
18/30
 
21/35
26/35
每 相 電 容  Capacitance  μF/km
25
0.2423
0.1922
0.1576
---
---
---
---
35
0.2684
0.2116
0.1725
0.1502
---
---
---
50
0.3022
0.2367
0.1917
0.1661
0.1363
0.1239
0.1150
70
0.3462
0.2693
0.2167
0.1868
0.1508
0.1365
0.1263
95
0.3875
0.2999
0.2400
0.2060
0.1643
0.1483
0.1368
120
0.4236
0.3266
0.2603
0.2228
0.1760
0.1584
0.1460
150
0.4647
0.3570
0.2834
0.2418
0.1893
0.1700
0.1563
185
0.5059
0.3873
0.3123
0.2656
0.2026
0.1815
0.1665
240
0.5430
0.4290
0.3439
0.2916
0.2207
0.1972
0.1805
300
0.5589
0.4706
0.3755
0.3175
0.2387
0.2128
0.1945
400
0.5940
0.5311
0.4213
0.3551
0.2648
0.2354
0.2146
500
0.6167
0.5839
0.4613
0.3880
0.2876
0.2551
0.2321
630
0.6848
0.6481
0.5099
0.4278
0.3151
0.2789
0.2533
 
電纜載流量  The Current carrying capacity   ◇ 3.6/6kV 
                        (A)
導(dǎo)體
Conductor
標(biāo)稱截面
Nominal cross
sectional areas
mm2
非鎧裝型電纜     Unarmored
鎧裝型電纜Armored
單芯 Single core
三芯  Three cores
三芯  Three cores
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
銅導(dǎo)體
Copper
conductor
25
165
160
135
150
135
150
35
205
190
160
180
165
175
50
245
225
195
210
195
205
70
305
275
245
260
245
255
95
370
330
300
305
300
300
120
430
375
345
350
345
345
150
490
425
395
390
390
385
185
560
480
455
445
445
435
240
665
555
540
515
525
505
300
765
630
615
580
595
565
400
890
725
720
660
695
645
鋁導(dǎo)體
Aluminum
conductor
25
130
120
105
115
105
115
35
155
145
130
140
130
140
50
190
175
155
165
150
165
70
235
215
190
200
190
195
95
290
255
235
240
230
235
120
335
290
270
275
265
270
150
380
330
310
305
305
300
185
435
370
355
350
350
340
240
515
435
420
405
410
390
300
595
490
485
455
470
445
400
695
565
575
525
550
510
 
◇ 6/6、6/10kV
                                                     (A)
導(dǎo)體
Conductor
標(biāo)稱截面
Nominal cross
sectional areas
mm2
非鎧裝型電纜  Unarmored
鎧裝型電纜Armored
單芯  Single core
三芯  Three cores
三芯  Three cores
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
銅導(dǎo)體
Copper
conductor
25
165
160
135
150
135
150
35
205
190
160
180
165
175
50
245
225
195
210
195
205
70
305
275
245
260
245
255
95
370
330
300
305
300
300
120
430
375
345
350
345
345
150
490
425
395
390
390
385
185
560
480
455
445
445
435
240
665
 ---
540
515
525
505
300
765
630
615
580
595
565
400
890
725
720
660
695
645
鋁導(dǎo)體
Aluminum
conductor
25
130
120
105
115
105
115
35
155
145
130
140
130
140
50
190
175
155
165
150
165
70
235
215
190
200
190
195
95
290
255
235
240
230
235
120
335
290
270
275
265
270
150
380
330
310
305
305
300
185
435
370
355
350
350
340
240
515
435
420
405
410
390
300
595
490
485
455
470
445
400
695
565
575
525
550
510
    ◇ 8.7/10kV.  8.7/15kV
                                                                          (A)
導(dǎo)體
Conductor
標(biāo)稱截面
Nominal cross
sectional areas
mm2
非鎧裝型電纜  Unarmored
鎧裝型電纜Armored
單芯 Single core
三芯  Three cores
三芯  Three cores
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
銅導(dǎo)體
Copper
conductor
25
165
160
140
150
140
150
35
205
190
170
180
170
175
50
245
225
205
210
205
210
70
305
275
255
260
250
255
95
370
330
310
305
310
305
120
430
375
360
350
350
350
150
490
425
405
390
400
390
185
560
480
465
445
450
440
240
665
555
550
520
530
510
300
765
630
625
585
605
565
400
890
725
730
665
700
645
鋁導(dǎo)體
Aluminum
conductor
25
130
120
110
115
110
115
35
155
145
130
140
130
140
50
160
175
160
165
160
165
70
200
215
200
200
195
200
95
245
255
240
240
240
240
120
280
290
285
275
270
270
150
320
330
315
305
310
300
185
365
370
365
350
350
340
240
435
435
430
405
415
400
300
500
490
490
455
475
445
400
585
565
580
525
555
515
 
  ◇ 12/20kV       
                                                  (A)
導(dǎo)體
Conductor
標(biāo)稱截面
Nominal cross
sectional areas
mm2
非鎧裝型電纜  Unarmored
鎧裝型電纜 Armored
單芯  Single core
三芯  Three cores
三芯 Three cores
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
銅導(dǎo)體
Copper
conductor
25
165
160
140
150
140
150
35
205
190
175
180
170
175
50
245
225
210
210
205
205
70
305
275
260
260
255
255
95
370
330
315
315
310
305
120
430
375
360
355
350
345
150
490
425
410
400
400
385
185
560
480
470
445
455
440
240
665
555
555
520
535
510
300
765
630
630
585
605
570
400
890
725
735
665
705
645
鋁導(dǎo)體
Aluminum
conductor
25
130
120
110
115
110
115
35
155
145
135
140
135
140
50
190
175
160
165
160
165
70
235
215
200
200
200
195
95
290
255
245
245
240
240
120
335
290
280
275
275
270
150
380
330
320
305
310
300
185
435
370
365
350
355
345
240
515
435
430
405
415
400
300
595
490
495
455
475
445
400
695
565
580
525
560
515
 
   ◇ 18/30kV 
                                                          (A)
導(dǎo)體
Conductor
標(biāo)稱截面
Nominal cross
sectional areas
mm2
非鎧裝型電纜  Unarmored
鎧裝型電纜Armored
單芯  Single core
三芯  Three cores
三芯  Three cores
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
銅導(dǎo)體
Copper
conductor
50
245
225
215
210
210
205
70
305
275
270
265
265
255
95
370
330
320
310
315
305
120
425
375
370
360
360
345
150
485
420
420
400
410
385
185
555
475
480
445
465
440
240
650
555
565
525
545
510
300
745
630
640
585
615
570
400
870
720
745
670
715
645
鋁導(dǎo)體
Aluminum
conductor
50
190
175
165
165
165
165
70
235
215
205
205
205
200
95
285
255
250
245
245
240
120
330
290
285
275
280
270
150
375
325
330
305
320
305
185
430
370
375
350
365
350
240
505
430
435
410
425
400
300
580
490
505
455
485
450
400
680
565
590
525
570
515
   ◇ 21/35kV                                                    
                                                        (A)
導(dǎo)體
Conductor
標(biāo)稱截面
Nominal cross
sectional areas
mm2
非鎧裝型電纜  Unarmored
鎧裝型電纜Armored
單芯  Single core
三芯  Three cores
三芯  Three cores
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
銅導(dǎo)體
Copper
conductor
50
245
225
215
210
210
210
70
305
275
270
265
260
260
95
370
330
325
315
330
315
120
425
375
370
355
360
350
150
485
420
425
400
410
390
185
555
475
480
450
465
445
240
650
555
565
525
545
515
300
745
630
645
590
610
565
400
870
720
750
675
-
-
500
1000
825
-
-
-
-
鋁導(dǎo)體
Aluminum
conductor
50
190
175
165
170
165
165
70
235
215
210
200
200
200
95
285
255
250
245
255
245
120
330
290
290
275
280
270
150
375
325
330
315
320
300
185
430
370
375
350
365
345
240
505
430
440
410
425
400
300
580
490
505
460
475
445
400
680
565
590
530
-
-
500
790
645
-
-
-
-
     
 ◇ 26/35kV  
                                                        (A)
導(dǎo)體
Conductor
標(biāo)稱截面
Nominal cross
sectional area
mm2
非鎧裝型電纜  Unarmored
鎧裝型電纜Armored
單芯  Single core
三芯  Three cores
三芯  Three cores
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
空氣
In air
土壤
Buried
銅導(dǎo)體
Copper
conductor
50
245
225
215
210
210
210
70
305
275
270
265
260
260
95
370
330
325
315
330
315
120
425
375
370
355
360
350
150
485
420
425
400
410
390
185
555
475
480
450
465
445
240
650
555
565
525
545
515
300
745
630
645
590
610
565
400
870
720
750
675
-
-
500
1000
825
-
-
-
-
630
1160
940
-
-
-
-
鋁導(dǎo)體
Aluminum
conductor
50
190
175
165
170
165
165
70
235
215
210
200
200
200
95
285
255
250
245
255
245
120
330
290
290
275
280
270
150
375
325
330
315
320
300
185
430
370
375
350
365
345
240
505
430
440
410
425
400
300
580
492
505
460
475
445
400
680
565
590
530
-
-
500
790
645
-
-
-
-
630
920
740
-
-
-
-
 
金屬屏蔽層的短路電流  Short circuit current of screen   ◇單芯電纜    single core
導(dǎo)體標(biāo)稱截面
Nominal cross section areas of   conductor
mm2
額定電壓(kV)    Rated voltages     
3.6/6
6/6
6/10
8.7/10
8.7/15
12/20
18/20
18/30
21/35
26/35
短路電流（A）  Short circuit current.
25
1075
1083
1094
---
---
---
---
35
1074
1082
1092
1096
---
---
---
50
1072
1080
1091
1095
1284
1286
1288
70
1070
1079
1090
1091
1281
1285
1286
95
1069
1077
1086
1272
1280
1284
1283
120
1068
1077
1266
1271
1279
1280
1282
150
1067
1076
1265
1270
1278
1279
1282
185
1064
1251
1264
1267
1275
1279
1279
240
1241
1250
1262
1266
1274
1276
1278
300
1239
1246
1261
1265
1271
1275
1277
400
1240
1245
1256
1260
1270
1272
1274
500
1243
1244
1253
1257
1266
1272
1273
630
1236
1238
1252
1253
1265
1270
1270
  ◇三芯電纜    three-cores
導(dǎo)體標(biāo)稱截面
Nominal cross section areas of   conductor
mm2
額定電壓（kV）    Rated voltages
3.6/6
6/6
6/10
8.7/10
8.7/15
12/20
18/20
18/30
21/35
26/35
短路電流（A）  Short circuit current.
25
2958
2958
2958
---
---
---
---
35
2958
2958
2958
2958
---
---
---
50
2958
2958
2958
2958
3031
3031
3031
70
2958
2958
2958
2958
3031
3031
3031
95
2958
2958
2958
3031
3031
3031
3031
120
2958
2958
2958
3031
3031
3031
3031
150
2958
2958
3031
3031
3031
3031
3031
185
2958
2958
3031
3031
3031
3031
3031
240
3031
3031
3031
3031
3031
3031
3031
300
3031
3031
3031
3031
3031
3031
3031
400
3031
3031
3031
3031
3031
3031
3031
500
3031
3031
3031
3031
3031
3031
3031
630
3031
3031
3031
3031
3031
3031
3031
  ●載流量計(jì)算條件:     Current ratings are calculated for the following installation conditions:  ◇導(dǎo)體上限工作溫度   Max. Rated temperature of the cable conductor   90℃ ◇環(huán)境空氣溫度       Ambient temperature in air                      40℃ ◇土壤溫度           Ground temperature                              25℃ ◇土壤熱阻系數(shù)       Rating factors for ground thermal resistive     1.0 ℃.m/W ◇埋設(shè)深度           Depth                                           0.8m ◇僅考慮一個(gè)回路     Single circuit parallel laid ◇單芯電纜為水平敷設(shè),間距為一個(gè)電纜外徑   Single core is paralleled installation. Adjacent space is equivalent to the diameter of cable.  ●環(huán)境條件對(duì)電纜載流量的修正系數(shù)  Rating factors of current rating for ambient condition   ◇ 土壤敷設(shè)      Direct in ground  ◇ 不同土壤溫度下載流量修正系數(shù)    Rating factors of current rating for ambient temperature 
土壤溫度℃
Ground temperature
15
20
25
30
35
40
45
系     數(shù)
Rating factors
1.07
1.04
1.0
0.96
0.92
0.87
0.83
  ◇不同土壤熱阻載流量的修正系數(shù) Rating factors of current rating for ground thermal resistive
土壤熱阻
Rating factors for ground thermal resistive  ℃.m/w
1.0
1.2
1.5
2.0
2.5
3.0
3.5
三芯電纜  Single core
1.0
0.943
0.877
0.792
0.736
0.675
0.641
單芯電纜  Three core
1.0
0.934
0.850
0.748
0.692
0.635
0.598
    ◇  空氣敷設(shè)    Direct in air  ◇ 不同環(huán)境溫度下載流量的校正系數(shù)     Rating factors of current rating for air thermal resistive.
 
 
環(huán)境空氣溫度℃
Air temperature ℃
 
20
25
30
35
40
45
50
系     數(shù)
Rating factors
1.18
1.14
1.10
1.05
1.0
0.95
0.89