Schneider Electric 58 TRX manual Motor Protecting Output Filters, 161

Class 8839 58M Enclosed AC Drives

Motor Protecting Output Filters

Low pass filters can be used on the output of the Class 8839 58M Enclosed AC Drive to decease the stress of resonant frequencies on the attached motor. While low pass filters are not necessary for most installations, they do provide substantial benefits in installations involving long motor leads, such as:

•460 V or higher rated AC drives

•1–25 hp rated units, if cable lead lengths are in excess of 75 feet

•30–400 hp rated units, if cable lead lengths are in excess of 300 feet

•Use of a non–inverter duty rated motor(s)

•Existing general purpose motors subject to retrofit to an AC drive

The motor protecting output filters combine inductance, capacitance, and resistance to form a low pass filter. This filter will lower the dV/dt levels to prevent exciting the natural resonant wire frequency of the motor cables. Motors compliant to NEMA MG–1 Part 31 guidelines do not require the use of motor protecting output filters.

HP Rating	Output Filter Part No.	Separately Mounted
@ 460 V	(Separate Mounting)	Engineered Option
1–2	KLCUL4A1	E402
3	KLCUL6A1	E402
5	KLCUL8A1	E402
7.5	KLCUL12A1	E402
10	KLCUL16A1	E402
15	KLCUL25A1	E402
20–25	KLCUL35A1	E402
30	KLCUL45A1	E402
40	KLCUL55A1	E402
50-60	KLCUL80A2	E402
75	KLCUL110A2	E402
100	KLCUL130A2	E402
125	KLCUL160A2	E402
150	KLCUL200A3	E402
200	KLCUL250A3	E402
250	KLCUL300A3	E402
300	KLCUL360A3	E402
350	KLCUL420A3	E402
400	KLCUL480A3	E402
450–500	KLCUL600A3	E402

Motor Protecting Output Filters:

1.Output filters are manufactured by Trans-Coil, Inc.

2.Output filters are designed for cable lead lengths ranging from 50 to 1000 feet.

3.Output filters include 1.5% nominal reactance at 480 V.

4.Output filters are enclosed in Type 1 general purpose enclosures.

5.Output filters are intended for separate mounting and wiring by user.

09/2003

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