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DriveRx® 1 kV VFD Cable

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DriveRx®  1 kV VFD Cable Variable Speed Drive Cable
Standards
National  CSA C22.2 N° 123-96; CSA C22.2 N° 174-M1984
Description

Modern drive technology has enhanced the performance of industrial motors. Decreased switching time of the electronics in Variable Frequency, Pulse Width Modulation or Vector drives, means specialized cables connecting the drive unit and the motor become critical to the performance of these systems. Nexans DriveRx cable is specially constructed to meet the challenges of modern adjustable speed drive systems.

Drive manufacturers recommend the Nexans cable construction, with the corrugated continuous aluminum sheath and 3 bonding conductors.

The three conductor construction virtually eliminates magnetic fields outside of the cable, so induced voltage from one power cable to another or cross talk to control/instrumentation cables is also reduced. The continuous aluminum sheath (as opposed to interlocked armour) acts as an effective shield for high frequency "noise" that may still be produced and could affect adjacent control and instrumentation cables. This sheath, in combination with the three grounding conductors, also acts as a long-term low resistance path to the ground. This will eliminate standing voltages that may be created on the motor frame and also reduce bearing currents due to this standing voltage or to common mode voltage.


Application

Nexans DriveRx cable is recommended for industrial, commercial and utility installations including outdoor wet locations. DriveRx can be installed in tray, conduit or direct buried, strapped to walls or surface mounted. Although DriveRx can be installed in tray or conduit, mechanical protection is NOT required, as DriveRx is impact and crush resistant. Cable temperature rating is 90ºC to -40ºC. DriveRx is flame, oil and UV resistant. Certification to standard C22.2 No. 174 allows installation in hazardous locations.



Related documents
  DriveRx Part No.  (26.0kb)



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Characteristics
Construction characteristics
Conductor material Copper  
Electrical characteristics
Rated Voltage Uo/U (Um) 1000 V  
Usage characteristics
Maximum operating temperature 90°C  

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DriveRx® Specifications

Phase
Conductor
Size

Bonding 
Conductor
# x AWG∆∆

Cable
Core O.D.
mm

Aluminum 
Sheath 
Thickness
mm

Aluminum
Sheath O.D.
mm

PVC
Jacket
Thickness
mm

Outside
Diameter
mm

Cable
Weight
kg/km

Rated
Current**
Amps

Min. Bend
Radius
mm***

NexansVFD
Connector 
TypeD/TypeW

12

3 x #18

10.2

0.61

15.3

1.27

17.8

370

20

140

16D2/16W2

10

3 x #16

11.5

0.61

16.1

1.27

18.6

455

30

145

16D2/16W2

8

3 x #14

12.7

0.61

19.2

1.27

21.9

620

45

175

20D3/20W3

6

3 x #12

16.3

0.80

23.2

1.27

26.0

880

65

210

25D3/25W3

4

3 x #12

18.7

0.80

24.8

1.27

27.4

1135

85

225

25D3/25W3

3

3 x #10

20.1

1.00

28.4

1.27

31.3

1475

105

255

30D4/30W4

2

3 x #10

21.8

1.00

29.8

1.27

32.3

1670

120

270

30D4/30W4

1

3 x #10

25.7

1.10

34.4

1.27

37.1

2100

140

310

35D5/35W5

1/0

3 x #10

27.8

1.10

35.8

1.27

38.6

2440

155

325

35D5/35W5

2/0 

3 x #10

30.0

1.10

39.8

1.52

43.0

2990

185

360

40D5/40W5

3/0

3 x #8

32.7

1.10

41.3

1.52

44.5

3590

210

375

45D6/45W6

4/0

3 x #8

35.7

1.10

45.8

1.52

49.0

4325

235

415

45D6/45W6

250 

3 x #8

37.8

1.00

49.4

1.52

52.7

5030

265

445

50D8/50W8

350

3 x #8

44.3

1.00

52.1

1.52

55.6

6645

325

570

∆∆∆

500

3 x #6

50.9

1.00

63

1.52

66.3

9040

395

570

∆∆∆

*A 1996 IEEE paper compared "commonly available" cable constructions for VFD feeders.  A corrugated aluminum sheathed cable similar in construction
to DriveRX was determined to provide the best combination of electrical, installation, maintenance and cost factors of the cables studied.

**Rated current per table #2 in Canadian Electrical Code - 2006.

***Minimum bend radius per rule 12-712 (3) in C.E.C. is 9 x sheath diameter.

∆ Cable is CSA approved to standard C22.2 No. 123-96 and approved for hazardous locations to standard C22.2 No. 174-M1984

∆∆Size of each bonding conductor.  Total area of 3 conductors meets or exceeds bonding conductor size (Table #16) in Canadian Electrical Code.

∆∆∆ Use any Teck connector suitable for Class II groups E, F &G or better.


DriveRx® Solutions For Drive Problems

Problem:
High frequency noise interferes with data and control signals, causing production system malfunctions.

DriveRx Sheath
The bendable heavy wall, continuously corrugated, impervious aluminum sheath provides an excellent shield.

Problem:
High resistance path to ground leaves drives and motors vulnerable to damaga dna can also cause a safety hazard.

DriveRx Sheath and Connectors
The continuously corrugated, corrosion-resistant aluminum sheath gives 100% coverage and provides a long term low resistance path to ground.
Nexans Type "D" and "W" DriveRx connectors assure a long term low resistance 360º contact with the sheath offering the very best high
frequency shield available throughout the entire drive system.


Problem:
Common mode currents impair drive unit electronic performance and shorten the drive lifespan.

DriveRx Sectored Grounds
Three bare copper bonding conductors (in place of one larger bonding conductor), provide the best cancellation and lowest net injected ground
current into the drive system.


Problem:
Bearing currents cause motor burnout.

DriveRx Sectored Grounds
Total cross-sectional area of the 3 bare bonding conductors meets or exceeds Table #16 Canadian Electrical Code requirements. Combined
with the low resistance sheath and connectors, this construction ensures a balanced, low resistance path to the ground to reduce the chance
of motor failure due to bearing currents.


Problem:
High voltage spikes damage cable and cause system failure, resulting in expensive operational downtime.

DriveRx Insulation
1000 Volt rated crosslinked polyethylene insulation guarantees high dielectric strength to withstand high voltage spikes of 2 to 3 times normal
voltage.


Problem:
Ground loops, and stray currents picked up along the cable route injecting stray currents into the drive electronics result in drive failure.

DriveRx Jacket
A PVC jacket rated FT4 and AG14 ensures cables are grounded at the terminations only, preventing the pick up of stray currents. The black
PVC jacket is UV resistant, suitable for outdoor use.


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DriveRx®  1 kV VFD Cable   DriveRx Part No. (26 kB)

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