POWRSOFT® Controller is designed to soft start Ronk rotary phase converters. By reducing the normal starting inrush on the single phase line by up to 50%, larger rotary converters may be used on utility single phase lines for irrigation systems and other loads when three phase is not available.
Built to work exclusively with Ronk rotary phase converters. These units can be retrofitted into an existing Ronk converter installation.
Single-Phase Input
ROTO-CON® Type P*
ROTO-CON® Type D-1*
ROTOVERTER Type C
ROTOVERTER Type D
240 V
≤30 KVA
≤12 KVA
≤30 KVA
≤12 KVA
240V
40 KVA - 100 KVA
14 KVA - 35 KVA
40 KVA - 100 KVA
14 KVA - 35 KVA
240V
120 KVA - 150 KVA
42 KVA - 52.5 KVA
120 KVA - 150 KVA
42 KVA - 52.5 KVA
480V
≤60 KVA
≤21 KVA
≤60 KVA
≤21 KVA
480V
80 KVA - 150 KVA
28 KVA - 52.5 KVA
80 KVA - 150 KVA
28 KVA - 52.5 KVA
Weight
30 lbs.
33 lbs.
38 lbs.
34 lbs.
38 lbs.
POWRSOFT® 50% Reduction
15 A
20 A
37.5 A
55 A
75 A
120 A
165 A
180 A
210 A
250 A
ROTOVERTER® TYPE D
Approx. Inrush @ 240 V
POWRFSOFT® 50% reduction
1.4 KVA - 2.1 KVA
30 A
15 A
3.5 KVA
75 A
37.5 A
5.3 KVA
110 A
55 A
8 KVA
200 A
100 A
12 KVA
240 A
120 A
16 KVA
280 A
140 A
21 KVA
330 A
165 A
28 KVA
420 A
210 A
35 KVA
500 A
250 A
42 KVA
575 A
287.5 A
ROTO-CON® rotary converter provides smooth, reliable 3-phase power from single-phase lines. Best suited for operating motors that do not operate continuously at high load levels and for non-motor loads.
Learn MoreROTO-CON® rotary converter provides smooth, reliable 3-phase power from single-phase lines. ROTO-CON Type D-1 is designed for applications with a single high starting torque motor or resistive loads with tighter voltage tolerances.
Learn MoreROTOVERTER® tap adjustments give you control over all three phases for balancing currents. Type C ROTOVERTER® models are recommended for multiple loads of varying horsepower ratings up to 100 HP.
Learn MoreROTOVERTER® tap adjustments give you control over all three phases for balancing currents. Type D ROTOVERTER® models are recommended for applications where a single load (of either single or multiple motors up to 42 HP) is operated and for non-motor load applications.
Learn MoreReliability and safety of electrical systems have never been more important. Ronk's American designed and assembled products are durable, efficient and last for decades.