SineWave Guardian Technical Reference Manual 380V - 480V 1. WARNINGS Warnings and Cautions There are two types of warnings in this manual: WARNING describes situations that can lead to serious faults, physical injuries, or even death. Caution describes situations that can lead to malfunction or possible equipment damage. WARNING describes situations that can lead to serious faults, physical injuries, or even death.
Modular filters must have reactor grounded througha 2”x2” area cleaned of paint and varnish on lower mounting bracket. WARNING Only spare parts obtained from MTE Corporation or an authorized MTE distributor can be used. WARNING After removing power, allow at least five minutes to elapse and verify that the capacitors have discharged to a safe level before contacting internal components.
SineWave Guardian Filters transform the output of Variable Frequency Drives (VFDs) to a near perfect sinusoidal waveform for the best level of motor protection. MTE’s unique, patent-pending design offers high performance with smaller size and better efficiency than traditional LC Filters.
3. HOW TO SELECT Selection Guide MTE SineWave Guardian Motor Protection Filters are designed to provide a sine wave output voltage when driven from PWM inverters with switching frequencies from 2 kHz to 8 kHz. For drive applications, these filters eliminate the problem of motor insulation failures and they also reduce electromagnetic interference by eliminating the high dV/dt associated with inverter output wave forms.
SineWave Guardian Technical Reference Manual 380V - 480V Part Number Configuration _ _ _ _ SineWave Guardian Type M = Modular G = General Purpose (NEMA 1/2) W = Weather (NEMA 3R) Current Rating 0002 is 2 Amps 0720 is 720 Amps Voltage Frequency Code D 380V –...
SineWave Guardian Technical Reference Manual 380V - 480V Part Number Selection Tables Table 3-1: Modular Selection Table 3-Phase Open Capacitor App. Capacitor 380V 460V Filter Ref. Watts* Magnetics (in.) (H x D) Motor Motor Part Number Ref. (in.) Fig. Loss Rating Capacitor Panel Fig.
Inductive Loads 12 VDC Resistive Loads 24 VDC Resistive Loads MTE highly recommends the use of the over temperature switch to prevent damage to the filter in rare instances of overheating from abnormal operating conditions. Form: SWG-TRM-E December 2013 REV. 002...
SineWave Guardian Technical Reference Manual 380V - 480V 5. TYPICAL PERFORMANCE DATA Voltage Waveforms Figure 5-1: Output Voltage before SineWave Guardian Figure 5-2: Output Voltage after SineWave Guardian Form: SWG-TRM-E December 2013 REV. 002...
SineWave Guardian Technical Reference Manual 380V - 480V 6. HOW TO INSTALL Installation Checklist Prior to installation, please refer to all general warnings on page 4. Failure to practice this can result in body injury! WARNING Input and output wiring to the filter should be performed by authorized personnel in accordance with NEC and all local electrical codes and regulations.
SineWave Guardian Technical Reference Manual 380V - 480V Grounding The filter must always be grounded with a grounding conductor connected to ground terminals. WARNING For modular units, ensure a 2” X 2” area is cleaned of paint and varnish on lower mounting bracket for ground connection. WARNING For cable shield grounding follow the drive manufactures recommendations.
8 kHz. Optimum output frequency is 2kHz to 3kHz. Caution MTE recommends 10 seconds as an initial starting point for motor ramp time and that customers examine the actual inrush and ratings of their drive system. Inrush current seen at the drive from the filter that can easily be overcome by Caution changing the motor ramp time.
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Failure to do so may result in failure of drive or filter components. 4. MTE recommends 10 seconds as an initial starting point for motor ramp time and that customers examine the actual inrush and ratings of their drive system. Inrush current seen at the drive from the filter that can easily be overcome by changing the motor ramp time.
Table 8-1: Troubleshooting Guide PROBLEM: Drive Overcurrent Fault Motor ramp –up time too short Possible cause: MTE suggests a ramp time of >5-10 seconds. Consult drive manufacturers Solution: manual to configure proper parameters Possible cause: Failed or Incorrect Wiring Solution:...
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SineWave Guardian Technical Reference Manual 380V - 480V PROBLEM: Excessive Filter Noise Possible cause: Mismatched Motor Rating Solution: Verify the filter is properly sized for the application Possible cause: Capacitors Disconnected or Improperly Wired Solution: Verify the proper connection of the capacitors Possible cause: Carrier frequency less than 2 kHz Solution:...
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