GP25PL 25 HP Rotary Phase Converter
Version 1.1.0
Important Notes Before Installation
? Most important step to know:
- NEVER start the phase converter with a load, including transformers.
- Ensure incoming service is adequate. Verify the KVA size of the transformer with your electric company; it must be larger than the HP of the idler motor.
- DO NOT use wire nuts for any connection; use bolt-down lugs.
- Check all connections, including factory connections to the power block, and recheck them after a few weeks of use.
- If the idler motor does not reach FULL SPEED when powering up the unit, shut down the phase converter immediately. Failure to do so may damage the idler motor, which is not covered under warranty. Consult a qualified electrician if unsure.
- Installation must be performed by a licensed industrial electrician. These guidelines do not supersede local and state laws.
Power Requirements
Use a motor load type breaker, not a quick blow or trip breaker.
Breaker Sizing Guidelines:
- Single Machine with Inductive Load: Double the machine's amp size. Example: If equipment draws 20 amps, use a 40 amp breaker.
- Multiple Machines: Double the amp size of the largest machine and add the amp draw of other machines that will run simultaneously. Example: 20 AMP Lathe, 9 AMP Saw, 6 AMP Milling Machine. Calculation: (20 AMPs * 2) + 9 AMPs + 6 AMPs = 40 + 9 + 6 = 55 AMPs. Use the next standard size breaker, which would be a 50 Amp two-pole breaker.
Refer to the provided chart for minimum and maximum allowed breaker sizes. For rural areas, increase the minimum breaker size by 20%.
Wire and Breaker Sizes (Single Phase, under 50 feet):
| IDLER MOTOR | WIRE SIZE | BREAKER/FUSE |
|---|---|---|
| 25 HP | 4 AWG COPPER | 40 MIN / 125 MAX |
Connecting the Idler Motor Wires
The following describes how wires are connected. Do not use wire nuts; use bolt-down lugs.
For Motors with 9 Leads:
- Connect leads 1 and 7 to L1.
- Connect leads 2 and 8 to L2.
- Connect leads 3 and 9 to L3.
- Connect leads 4, 5, and 6 together.
For Motors with 12 Leads:
- Connect leads 1, 7, 6, and 12 to L1.
- Connect leads 2, 4, 10, and 12 to L2.
- Connect leads 3, 5, 9, and 11 to L3.
A disconnect should be used if the wire run is over 50 feet.
Voltage Connections:
- 230V Connection: For NL and PL Models (low voltage).
- 460V Connection: For NH and PH Models (high voltage).
25 HP Rotary Phase Converter Components (Listing 1)
The following table lists components for the 25 HP Rotary Phase Converter models.
| Item Number | Description | Quantity in Model | Price | SKU# |
|---|---|---|---|---|
| 1 | Relay | 1 | 47.00 | GP90-66 |
| 3 | 2 Pole Contactor | 1 | 28.00 | GP2P30A |
| 4 | 3 Pole Contactor 60 amp - 230V | 1 | 52.84 | C360C |
| 5 | 9 Bank Start and Run Capacitor Holder Only with Base | 1 | 239.00 | CB409HO |
| 6 | 3 Phase Power Block | 1 | 45.00 | RS2540 |
| 7 | 630 MFD 220V Start Capacitor | 3 | 26.00 | PTMJ630 |
| 8 | 100 MFD 370V Run Capacitor | 1 | 390.00 | TRC100 |
| * | Complete Capacitor Bank Assembly - Prewired | 1 | 1574.50 | CP309 |
| * | Complete Back Plate Assembly - Prewird PL | 1 | 1748.50 | CBA25PL |
| * | Complete Panel with Model (with Start and Stop Button) | 1 | 1764.00 | GP25PLPO |
| * | Complete Panel with NEMA 4 Enclosure Prewird PL Model (with Start and Stop Button) | 1 | 3497.00 | GP25PL |
| * | Idler Motor | 1 | N/A | N/A |
| * | Complete Unit Phase Converter Panel (PL Model) and Idler/Generator Motor | 1 | N/A | N/A |
25 HP Rotary Phase Converter Components (Listing 2)
The following table lists components for the 25 HP Rotary Phase Converter models, potentially with updated pricing or SKUs.
| Item Number | Description | Quantity in Model | Price | SKU# |
|---|---|---|---|---|
| 1 | Relay | 1 | 47.00 | GP90-66 |
| 3 | 2 Pole Contactor | 1 | 28.00 | GP2P30A |
| 4 | 3 Pole Contactor 60 amp - 230V | 1 | 160.00 | C375C |
| 5 | 9 Bank Start and Run Capacitor Holder Only with Base | 1 | 239.00 | CB409HO |
| 6 | 3 Phase Power Block | 1 | 45.00 | RS2540 |
| 7 | 630 MFD 220V Start Capacitor | 3 | 26.00 | PTMJ630 |
| 8 | 100 MFD 370V Run Capacitor | 1 | 420.00 | TRC100 |
| * | Complete Capacitor Bank Assembly - Prewired | 1 | 2374.50 | CP309 |
| * | Complete Back Plate Assembly - Prewird PL | 1 | 1748.50 | CBA25PL |
| * | Complete Panel with Model (with Start and Stop Button) | 1 | 1764.00 | GP25PLPO |
| * | Complete Panel with NEMA 4 Enclosure Prewird PL Model (with Start and Stop Button) | 1 | 3497.00 | GP25PL |
| * | Idler Motor | 1 | N/A | N/A |
| * | Complete Unit Phase Converter Panel (PL Model) and Idler/Generator Motor | 1 | N/A | N/A |
Technical Drawing Dimensions
A technical drawing provides dimensional specifications for the GP25PL unit. Key measurements are indicated for various points and overall size. For example, dimensions are provided for sections labeled A through F, with values such as 103.23 mm, 45 mm, 101.5 mm, 127 mm, 550 mm, 339.93 mm, and 136.79 mm, among others.
Document Information
Technical reference: Glen Floreancig
Created by: Glen Floreancig
Approved by: Glen Floreancig
Date of issue: August 13, 2023
Document type: Technical Drawing
Document status: Final
Title: Dimensions GP25PL
DWG No.: 4
Rev: 1/1
