dv/dt Filters FN5060HV

Output Filter for Motor Drives


Output Filter for Motor Drives

  • Reduction of drive output voltage dv/dt
  • Reduction of voltage stress at motor windings
  • Protect AC motors from destructive effect of peak voltages
  • Increase of motor service life
  • Improvement of system reliability

Features and Benefits

Efficient reduction of high output voltage dv/dt from IGBT motor drives (as per IEC 60034-17/25)
Restriction of overvoltages caused by line reflections on motor cables (as per IEC 60034-17/25)
Protection of motor winding insulation from premature aging and destruction
Increase service life of electric motors
Patented solution without capacitors and resistors for ease of installation and increased reliability
Less interference propagation towards neighbouring equipment or lines
Output filter with low impedance, ideal for processes requiring exceptional precision and reproducibility of movements

Typical Applications

Motor drive applications with short to medium motor cable length
Machinery comprising servo or torque motors
Submersible- and irrigation pumps
HVAC equipment, incl. pumps, fans and compressors
Elevators, hoisting and cranes
Motor drives for process lines
Applications where sine wave filters are not suited (e.g. high dynamic operation)

Technical Specifications

Nominal operating voltage

3x690 VAC

Rated operating voltage

3x760 VAC

Rated currents

30 to 1200 A @ 40°C

Voltage drop

<3 V @ 50 Hz

Typical dv/dt reduction

Factor 8 to 12

Motor frequency

0...60 Hz (with derating up to 120 Hz, see graph)

Switching frequency

0 to 16 kHz, depending on motor cable length and operating voltage (see graph)

Overload capability

1.5 x rated current for 1 minute, once per hour

Max. peak voltage

≤1850 V (according to EN 60034-25B)

High potential test voltage

P –> E 2860 VAC, 1 s

P –> P 2860 VDC, 1 a

Overvoltage category

OV III (IEC 60664-1)

Protection category

IP 00

Motor cable length

Up to 500 m (see graph page 2)

Ambient temperature range

-25°C to +100°C fully operational

-40°C to 100°C transport and storage (25/100/21)

Design corresponding to

UL 61800-5-1, CSA 22.2 No.14, EN 61558-2-20

Flammability corresponding to

UL 94V-2

Typical electrical schematic


Approvals & Compliances

RoHS Label
UL Recognized Label (USA)
CE Label
UKCA Label

UL recognized up to 320 A