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- Smoothing of PWM drive output voltages
- Increased service life of expensive high-speed motors
- Reduction of audible motor noise
- Improvement of system reliability
- Production up-time for mission critical applications
Performance indicators
Maximum continuous operating voltage |
3x500/288 VAC |
Rated currents |
25 to 120 A @ 50°C |
DC link voltage |
1000 VDC max. |
Overload capability |
1.5x rated current for 1 minute, once per hour |
Residual ripple voltage | <5% |
Motor frequency |
0 to 600 Hz |
Motor cable length |
200 m max. |
Switching frequency |
6 to 15 kHz |
High potential test voltage |
P –> E 2000 VAC for 2 sec |
Temperature range (operation and storage) |
-25°C to +100°C (25/100/21) |
Protection category |
IP 20 |
Flammability corresponding to |
UL 94 V-0 |
Design corresponding to |
UL 1283, CSA 22.2 No. 8 1986 |
Lifetime (calculated) |
>10 years (25, 55 A) |
Features and Benefits
- Suitable for fast rotating fields up to 600 Hz
- Conversion of the PWM output signal (symmetrical voltage components) of motor drives into a smooth sine wave with low residual ripple
- Elimination of premature motor damage caused by high dv/dt, overvoltages, motor overheating and eddy current losses
- Significantly increased service life of expensive (high-speed) motors
- Reduction of the pulse load of motor drive IGBTs and the parasitic losses on long shielded motor cables
- Less interference propagation towards neighboring equipment or lines
- Advanced choke design to minimize filter losses and voltage drop
- IP 20 protection, touch-safe terminals and temperature monitoring function to increase overall equipment safety
Typical Applications
Motor drives and motors in high-speed applications, like:
- High-speed spindles
- Textile machinery
- Lasers
- Military appliances (400 Hz)
Motor drive applications with medium to long motor cables and/or with multiple motors in parallel, like:
- Pumps
- Conveyors
Typical electrical schematic
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