Danfoss VLT 12-pulse drive Fact sheet

VLT® 12-pulse drive

Robust and cost eective harmonic solution for the higher power range. The Danfoss VLT® 12-pulse drive
oers reduced harmonics for demanding industry applications above 250 kW.

The VLT® 12-pulse is a high eciency
variable frequency converter which is
built with the same modular design as
the popular 6-pulse VLT® drives. It is
oered with similar drive options and
accessories and can be congured
according to customer need.

Together with the needed 30°-phase
shifting transformer the solution
provides durability and reliability at a
low cost.

Under ideal grid conditions the solu­tion eliminates the 5th, 7th, 17th an d 19th
harmonics and results in a THiD of
around 12% at full load.

The needed transformer makes this
solution ideal for applications where
stepping down from medium voltage
is required or where isolation from
the grid is needed.

The Danfoss VLT® 12-pulse drive
provides harmonic reduction without
adding capacitive or inductive com­ponents which often require network
analysis to avoid potential system
resonance problems.

Power Range:

n 250 kW – 1.4 MW

Voltage Range:

n 380 – 690 V

Enclosure:

n IP 21/NEMA Type 1
n IP 54/NEMA Type 12

Optimised

for:
– VLT® HVAC Drive FC 102
– VLT® AQUA Drive FC 202
– VLT® AutomationDrive

FC 302

Feature Benet

Reliable Maximum uptime

Maintenance free No running expenses
Durability Long lifetime
Coated PCBs Environmental robustness
100% factory tested Low failure rate
Backchannel cooling Prolonged lifetime of electronics

Design Easy operation and user-friendly set-up

Modular design Easy serviceability
Same easy programming as a 6-pulse drive User-friendly operation

– Standard award-winning control panel (LCP)
– Available in 27 languages

Eective commissioning and operation

Facts about our products

Options

The following options are available:

n

RFI lters

n

Disconnect

n

Fuses

n

Mains shielding

n

Feedback and I/O options

n

Fieldbus options

n

dU/dt lters

n

Sine wave lters

PC Software

VLT® MCT 10 Setup Software

VLT® MCT 10 oers advanced pro­gramming functionality for all Danfoss
drive products, greatly reducing
programming and set-up time.

VLT® MCT 10 Basic (available free of
charge on www.danfoss.com) allows
access to a nite number of drives
with limited functionality. The advanced
edition, oering a higher level of
functionality, is available from your
Danfoss sales partner.

VLT® MCT 31 Harmonics
Calculation Software

With VLT® MCT 31 you can determine
whether harmonics will be an issue in
your installation when drives are added.

Specications

THiD* at:
– 40% load
– 70% load
– 100% load

Eciency* at:
– 40% load
– 70% load
– 100% load

True power factor* at:
– 40% load
– 70% load
– 100% load

Ambient temperature 45° C without derating
Cooling Back-channel air cooling

* Measured at balanced grid without pre-distortion

Norms and recommendations Compliance

IEEE519 Depends on grid and load conditions
IEC61000-3-2 (up to 16 A) Out of scope
IEC61000-3-12 (between 16 and 75 A) Out of scope
IEC61000-3-4 (above 75 A) Always

20%
14%
12%

95%
97%
98%

91%
95%
97%

VLT® MCT 31 estimates the benets of
adding various harmonic mitigation
solutions from the Danfoss product
portfolio and calculates system
harmonic distortion.

From www.danfoss.com you can
download the free tool VLT® Harmonic

F8

Calculation MCT 31.

400 V AC 460 V AC 690 V AC Frame dimensions

Normal

Overload

Current

Power

[kW]

315
355 658 315 600 500 590 450 540 500 500 400 410
400 745 355 658 600 678 500 590 560 570 500 500
450 800 400 695 600 730 550 678 630 630 560 570
500 880 450 800 650 780 600 730 710 730 630 630
560 990 500 880 750 890 650 780 800 850 710 730
630 1120 560 990 900 1050 750 890 900 945 800 850
710 1260 630 1120 1000 1160 900 1050

800 1460 710 1260 1200 1380 1000 1160 1000 1060 900 945

1000 1720 800 1460 1350 1530 1200 1380 1200 1260 1000 1160

[A]

600 250 480 450 540 350 443 450 450 355 380

Overload

Power

[kW]

High

Current

[A]

Overload

Power

[HP]

Normal

Current

[A]

Overload

Power

[HP]

High

Current

[A]

Normal

Overload

Power

Current

[kW]

1400 1415 1200 1260

[A]

High

Overload

Power

[kW]

F12F10

Current

[A]

Without options

cabinet

H x W x D

IP 21 [mm]

F8

2280 x 800 x 607

F10

2280 x 1600 x 607

F12

2280 x 2000 x 607

With options

cabinet

H x W x D

IP 21 [mm]

F9

2280 x 1400 x 607

F11

2280 x 2400 x 607

F13

2280 x 2800 x 607

DKDD.PFP.401.A2.02 VLT® is a trademark of Danfoss A/S PE-MMSC 2014.09