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INSULATED FLEXIBLE  BUSBARS
insulated flexible busbars

KINTO's insulated flexible busbars are made of several layers of uncoated or tinned copper strips and insulated with  high quality flexible PVC cover.

1. Technical Features

STRIP

INSULATOR

CAPABILITIES
 Material: C11000
 Surface: uncoated or tinned.
 Resistivity: ≤1.785μΩcm2/cm.
 Electrical conductivity: ≥55 Sm/mm2.
 Tensile strength: ≥200N/mm2.
 Extensibility: ≥30%.
 

 Material: PVC.
 Color: black.
 Thickness: 1.8-2.1mm.
 Shore hardness: A70-80.
 Electrical strength: ≥23kV/mm.
 Oxygen index: 30%.
 Flame retardant; self-extinguishing.
 Elasticity: ≥180% after 7-day  aging test at135 ℃
 Tensile strength: ≥20MPa.

 Working temperature: -30℃ to +105℃.
Working voltage: 750V.
Voltage withstand performance with 15min / 50Hz AC:
- between  busbar and earth: ≥15kV.
- between two busbars: ≥30kV.
 

Main features of  insulated flexible busbars

   Easy installation: it could be easily bended and fixed with hands or easy tools.
   Possibility of reducing sizes of the equipment:
      - Due to favorable thermal radiation properties, the flexible insulated busbars can handle
        heavier current loads than solid busbars of the same cross-section.
      - Due to good insulating performance of the PVC, it could be possible to reduce the
        distances between different flexible insulated busbars and between the flexible insulated 
        busbars and earth.
      - The bending-radius could be smaller than that of normal cable or solid copper bars, so
        that the connections could be more simple and short, and visually it could have better effect.
   Lower temperature rise on the flexible insulated busbars than on normal copper bars.
   High flexibility: no problem with vibrations or thermal expansions.

2. Applications of Insulated Flexible Busbar

The flexibility of the bars makes it possible to install them into difficult equipment or small places very easily. They will be particularly well used as connectors in switchgears and between transformers, switching devices and prefabricated power networks.

application of insulated flexible busbar

3. Insulated Flexible Busbar Dimensions and Ampacity


  Standard length: 2m (for 1-layer busbar, 25m is possible).
  Cross-section: up to 1200 mm2.
  Ampacity: values are only for information because the actual ampacity is related to the
application conditions.
 

Dimensions and
Qty. of strips
 
Cross section (mm2)
Ampacity (A)
Dimensions and
Qty. of strips
Cross section (mm2)
Ampacity (A)
△T=20K  (3)
△T=40K  (4)
△T=50K  (5)
△T=20K  (3)
△T=40K  (4)
△T=50K  (5)
15.5*0.8*2
24.8
125
175
200
40*1*2
80
240
330
380
15.5*0.8*3
37.2
160
210
240
40*1*3
120
330
480
540
15.5*0.8*4
49.6
195
265
295
40*1*4
160
400
560
630
15.5*0.8*6
74.4
225
320
360
40*1*5
200
450
630
710
15.5*0.8*8
99.2
265
380
430
40*1*6
240
480
680
750
15.5*0.8*10
124
300
420
480
40*1*8
320
600
830
920
20*1*2
40
170
240
270
40*1*10
400
670
920
1030
20*1*3
60
230
320
360
50*1*3
150
400
570
650
20*1*4
80
270
380
440
50*1*4
200
490
700
790
20*1*5
100
300
430
490
50*1*5
250
540
780
880
20*1*6
120
330
470
530
50*1*6
300
590
840
950
20*1*8
160
400
560
620
50*1*8
400
680
1000
1130
20*1*10
200
420
580
650
50*1*10
500
750
1100
1300
24*1*2
48
200
280
320
63*1*5
315
650
900
1000
24*1*3
72
250
360
410
63*1*6
378
690
980
1100
24*1*4
96
280
410
460
63*1*8
504
840
1200
1350
24*1*5
120
330
470
530
63*1*10
630
920
1300
1450
24*1*6
144
360
510
570
80*1*5
400
700
1100
1230
24*1*8
192
420
590
670
80*1*6
480
780
1210
1360
24*1*10
240
500
700
790
80*1*8
640
950
1400
1570
32*1*2
64
230
320
360
80*1*10
800
1090
1550
1730
32*1*3
96
280
410
460
100*1*5
500
860
1250
1400
32*1*4
128
320
460
520
100*1*6
600
950
1380
1530
32*1*5
160
390
550
610
100*1*8
800
1100
1580
1760
32*1*6
192
440
620
700
100*1*10
1000
1220
1710
1920
32*1*8
256
510
720
822
100*1*12
1200
1300
1800
2010
32*1*10
320
600
840
930
 
 
 
 
 
 

 
4 Guidance for selecting KINTO's Insulated Flexible Busbars
 
The ampacities are related to the cross-sections and operating ambient temperature, as shown in above table. Therefore, three factors should be considered to determine the dimensions:
 
  Ampacity
  Allowed temperature-rise on the bars
  Bar width
 
The temperature-rise (△T) of bars can be calculated with following formula:
△T=Tr – Ta
Ta: ambient temperature
Tr: temperature of bars with rated current ( for general electrical apparatus, Tr should be ≤105℃).
 
Example (just for reference):
 
If your operating ambient temperature is 40℃, and you need ampacity 510A with bar width ＜ 40mm, you could get allowed highest temperature-rise 65K (105℃-40℃=65K), so you could decide dimension 32×1×4. With this bar, the highest temperature-rise will be 50K with current 520A.
 
 

We appreciated your interests in our Insulated Flexible Busbar, for more information and ordering
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