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DriveRx

 

Variable Speed Drive Cable
STANDARDS
National : CSA C22.2 N° 123; CSA C22.2 N° 174
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.

 

DRIVERX® SPECIFICATIONS  
Size AWG or kcmil Bonding Conductor (Note 8) Cable Core Aluminum  Sheath PVC  Jacket Approx Net Cable Weight (Note 1) Connectors (Nexans Catalogue No.)  (Note 5) Minimum Bending Radius  Ampacity (A) 30°C Ambient (Notes 2, 4)  
 
Nominal Diameter Nominal Diameter Nominal Diameter Under Tension Trained (Note 6)  
 
# x AWG mm mm mm kg/km Type D Type W mm mm 60ºC 75ºC 90ºC  
 
12 (7)  (Note 3) 3 x #18 9.9 15 17.7 350 16D2 16W2 210 135 25 25 30  
10 (7)  (Note 3) 3 x #16 11.2 15.8 18.4 425 16D2 16W2 225 145 30 35 40  
8 (7) 3 x #14 12.3 19.1 21.8 590 20D3 20W3 270 175 40 50 55  
6 (7) 3 x #12 15.9 21.1 23.7 805 25D3 25W3 300 190 55 65 75  
4 (7) 3 x #12 18.3 24.6 27.2 1125 25D3 25W3 345 225 70 85 95  
3 (7) 3 x #10 19.7 27.9 31.1 1490 30D4 30W4 395 255 85 100 115  
2 (7) 3 x #10 21.3 29.5 32.1 1665 30D4 30W4 415 265 95 115 130  
1 (18) 3 x #10 25.2 33.9 36.5 2080 35D5 35W5 475 305 110 130 145  
1/0 (18) 3 x #10 27.3 35.3 37.9 2420 35D5 35W5 495 320 125 150 170  
2/0 (18) 3 x #10 29.4 39.6 43 2990 40D5 40W5 555 360 145 175 195  
3/0 (18) 3 x #8 32 41.3 44.7 3470 40D5 40W5 580 375 165 200 225  
4/0 (18) 3 x #8 34.9 45 48.4 4320 45D6 45W6 630 405 195 230 260  
250 (36) 3 x #8 38.5 49.6 52.9 4975 50D8 50W8 695 450 215 255 290  
350 (36) 3 x #8 43.7 52.1 55.5 6460 (Note 7) (Note 7) 730 470 260 310 350  
500 (36) 3 x #6 50.3 60.2 64.4 9030 (Note 7) (Note 7) 845 545 320 380 430  
   
Notes:  
1) Where stated, “nominal” and “approximate” values are provided for information purposes only   
and are subject to standard manufacturing tolerances.   
2) Based on 2012 CEC Table 2, for not more than 3 current carrying conductors in a cable or raceway.  
3) The overcurrent protection shall not exceed 20 amperes for 12 AWG, and 30 amperes for 10 AWG   
after any corrections factors for ambient temperature and number of conductors have been applied   
(2012 CEC Rule 14-104(2)), or as provided for by other Rules of the 2012 CEC.  
4) The maximum conductor temperature (used to determine the maximum conductor ampacity) shall be   
based on the lowest temperature rating of the electrical equipment, any wire connector, or cable   
(2012 CEC Rule 4-006).  
5) Type D connectors are for use in dry locations only. Type W connectors are for use in dry or wet locations,   
and are approved for use in hazardous locations (Class II, Divisions 1 and 2, Groups E, F, and G, and Class III,   
Divisions 1 and 2).  
6) The minimum bending radius is 9x the nominal sheath diameter for a trained cable (fixed installation --   
2012 CEC Rule 12-712(3)).  
7) Use any TECK90 connector suitable for armour and jacket diameter, as well as the installation location.  
8) Size of each bonding conductor. Total area of 3 conductors meets or exceeds bonding conductor size   
in 2012 CEC Table 16.  
                           
                           
                           
                           
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 damage and 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.