Type CP-U, Unmounted Panel ROTO-CON® Rotary phase converters for center-pivot irrigation systems

Single-phase Full-load Amperage

Converter Size	1⌀ Input FLA
CP-3U	10 A
CP-5U	15 A
CP-7.5U	24 A
CP-10U	31 A
CP-15U	47 A
CP-20U	63 A
CP-25U	78 A

• Note that ROTO-CON Type CP-U units are nameplated only for 480 V input.
• A single-phase step-up transformer, if required, must safely carry converter single-phase full-load amerage rating.

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Sizing Chart, Based on Pivot Load

Converter Size	Locked Rotor Code Letter			Max. Rating of Additional Motors
	A – L	M – R	S – V
CP-3U	6.3 A	5.4 A	3.6 A	1 HP
CP-5U	10.3 A	8.9 A	5.7 A	2 HP
CP-7.5U	14.9 A	12.8 A	8.3 A	3 HP
CP-10U	21.6 A	18.6 A	12.0 A	5 HP
CP-15U	29.7 A	25.6 A	16.5 A	7.5 HP
CP-20U	43.2 A	37.1 A	24.0 A	10 HP
CP-25U	54.0 A	46.4 A	30.0 A	10 HP

0. To select the ROTO-CON CP-U size
1. Record the highest locked rotor code letter of tower motors.
2. Match total tower amperage to code letter column.
3. Check for additional motors such as booster pump and correct size as needed.
4. If questions or need assistance in sizing, call 800-221-7665.

Unmounted Rotary Base – Open Drip-proof

Frame	Converter Size	A	C	E	2F	G	H	O	P
184	CP-3U	9-7/8 in.	11-1/2 in.	3-3/4 in.	5-1/2 in.	4-1/2 in.	13/32 in.	8-1/2 in.	7-7/8 in.
213	CP-5U	12-3/4 in.	12-1/2 in.	4-1/4 in.	7 in.	5-1/2 in.	13/32 in.	10-1/8 in.	9-5/8 in.
215	CP-7.5U	12-3/4 in.	12-1/2 in.	4-1/4 in.	7 in.	5-1/2 in.	13/32 in.	10-1/4 in.	9-5/8 in.
254	CP-10U	15-3/8 in.	15-3/8 in.	5 in.	8-1/4 in.		17/32 in.	12 in.	11-3/4 in.
256	CP-15U	15-3/8 in.	15-3/8 in.	5 in.	10 in.	8-1/4 in.	17/32 in.	12 in.	11-3/4 in.
286	CP-20U	18-7/8 in.	18-3/4 in.	5-1/2 in.	11 in.	9-1/2 in.	17/32 in.	13-5/8 in.	13-1/4 in.
286	CP-25U	18-7/8 in.	18-3/4 in.	5-1/2 in.	11 in.	9-1/2 in.	17/32 in.	13-5/8 in.	13-1/4 in.

Unmounted Rotary Base – Totally Enclosed Fan-cooled (Roll Formed)

Frame	Converter Size	A	C	E	2F	G	H	O	P
213	CP-5U TEFC	12-7/8 in.	14 in.	4-1/4 in.	7 in.	5-1/2 in.	13/32 in.	10 in.	9-5/8 in.
215	CP-7.5U TEFC	12-7/8 in.	15-7/8 in.	4-1/4 in.	7 in.	5-1/2 in.	13/32 in.	10 in.	9-5/8 in.
254	CP-10U TEFC	15-9/16 in.	19 in.	5 in.	10 in.	8-1/4 in.	17/32 in.	12-7/8 in.	12-3/8 in.

Unmounted Rotary Base – Totally Enclosed Fan-cooled (Cast)

Frame	Converter Size	A	C	E	2F	G	H	O	P
256	CP-15U TEFC	16-1/8 in.	17-7/16 in.	5 in.	10 in.	8-1/4 in.	17/32 in.	12-7/8 in.	13 in.
286	CP-20U TEFC	20-1/2 in.	22-11/16 in.	5-1/2 in.	11 in.	9-1/2 in.	17/32 in.	14-7/16 in.	15-5/16 in.
286	CP-25U TEFC	20-1/2 in.	22-11/16 in.	5-1/2 in.	11 in.	9-1/2 in.	17/32 in.	14-7/16 in.	15-5/16 in.

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Nema 3R Enclosure: Frame 600

Enclosure 600 applies to the following converter sizes:

• CP-3U, CP-5U, CP-5U TEFC

Enclosure	A	B	C	D	E	F
600	9-1/8 in.	5-3/16 in.	10-1/16 in.	8-3/16 in.	5-1/16 in.	6 in.

Nema 3R Enclosures: Frames 601 & 602

Enclosure 601 applies to the following converter sizes:

• CP-7.5U, CP-10U, CP-7.5U TEFC, CP-10U TEFC

Enclosure 602 applies to the following converter sizes:

• CP-15U, CP-20U, CP-25U, CP-15U TEFC, CP-20U TEFC, CP-25U TEFC

Enclosure	A	B	C	D	E	F	G
601	12 in.	6-1/2 in.	12-13/16 in.	11-1/16 in.	6-3/16 in.	17-7/16 in.	16-1/4 in.
602	14-1/4 in.	8-1/2 in.	12-13/16 in.	13-5/16 in.	8-1/4 in.	17-1/4 in.	16-1/16 in.

Converter Size & Approximate Shipping Weights

Converter Size	Rotary Base Enclosure
	ODP	TEFC*
CP-3U	72 lbs.
CP-5U	100 lbs.	157 lbs.
CP-7.5U	120 lbs.	180 lbs.
CP-10U	190 lbs.	265 lbs.
CP-15U	240 lbs.	282 lbs.
CP-20U	335 lbs.	430 lbs.
CP-25U	360 lbs.	440 lbs.

* Totally enclosed fan-cooled (TEFC) for use in areas with severe dust, sand or water

Typical Application (select link for product inquiry)

• Pumps – irrigation