Motor Protection Filter Tutorial

Product catalog summary

Purpose
MTE Corporation's Motor Protection Filters are designed to eliminate motor repetitive voltage stress failures and long lead motor overvoltage problems.

Motor Specifications
The system is specified for a circuit length of 750 ft, with a load of 3-phase, 240 V, 3-1/4 A, a switching frequency (fSW) of 6KHz, and a fundamental frequency (fFUND) of 60 Hz.

Filter Options
1. Single Element Low Pass Filter: Suitable for rise times greater than 4µsec and switching frequencies less than 20 KHz.
2. High Frequency Snubber: Designed for rise times greater than 2µsec and switching frequencies less than 3.75KHz.
3. Dual Element Low Pass Filter: Features an LC filter with rise times greater than 2µsec and switching frequencies between 5KHz and 20KHz.

Benefits of MTE Filters
MTE offers the lowest utilization cost, a full range of solutions including reactors, snubbers, and sine wave filters, total motor insulation protection, durable products, stocked components, and a global delivery system.

Cost Alternatives
1. Do Nothing: $0
2. MTE Snubber: $278
3. MTE 5% Reactor: $153
4. MTE Motor Protection Filter: $233

Output Reactor Specifications
Output reactors must have at least 4.5% effective impedance, be IGBT protected, suitable for switching frequencies up to 20KHZ, and UL-506 and UL-508 approved. They must be copper wound with a UL class H insulation system, suitable for ambient temperatures of 45 C, and have a maximum temperature rise of 115 C. The reactors must be MTE Corporation type “RL” series.

Catalog excerpts

Motor Protection Filters MTE CORPORATION 1 >

Open the catalog to page 1

Motor Protection Filters MTE CORPORATION 2 >

Open the catalog to page 2

Motor Protection Filters MTE CORPORATION 3 >

Open the catalog to page 3

Motor Protection Filters MTE CORPORATION 4 >

Open the catalog to page 4

5% Reactor, 1000 ft, 240V--60 Hz, 6KHz Rise Time > > 4sec f SWITCH < > 20 KHz Motor Protection Filters MTE CORPORATION 5 size="-2">

Open the catalog to page 5

1000 ft, 240V60 Hz, 3KHz Rise time > > 2׵sec f SWITCH < > 3.75KHz Motor Protection Filters MTE CORPORATION 6 size="-2">

Open the catalog to page 6

20KHz Motor Protection Filters MTE CORPORATION 7 >

Open the catalog to page 7

u Reactors u Snubbers u Sine wave filters > Motor Protection Filters MTE CORPORATION 8 size="-1">

Open the catalog to page 8

OPTIONWAVEFORMCOST (5HP/460v) Do Nothing $0 > MTE Snubber $278 > MTE 5% Reactor $153 > MTE Motor Protection Filter $233 > Motor Protection Filters MTE CORPORATION 9 size="-2">

Open the catalog to page 9