Introduction
The DPS MY-PS-10 Digital Phase Converter is designed to enable the operation of 3-phase motors using a single-phase power supply. This device is ideal for workshops and homes where 3-phase power is not readily available or cost-prohibitive to install. It provides a reliable solution for powering various industrial and commercial electrical equipment that require 3-phase power.
Key features of the DPS MY-PS-10 include:
- Converts single-phase power to 3-phase power for motors.
- Easy to connect and use.
- Compact size and light weight.
- Continuously supplies 3-phase power even after motor startup.
- UL listed (UL-US-2328605-1, UL-CA-2324527-1) for safety and compliance.
- Digital type phase converter with excellent start-up torque.
- Low failure rate and non-flammable design.
- Sealed design protects against dust, moisture, and heat.
- Does not generate high frequency noise and offers lower power consumption.
- Provides excellent efficiency compared to other phase converters.
Setup and Installation
Proper setup and installation are crucial for the safe and efficient operation of your DPS MY-PS-10 Digital Phase Converter. Please follow these guidelines carefully.
Important Safety Information and Precautions
- The MY-PS-10 model is specifically designed for a 7.5HP (5.5kW) 23 amps 3-phase motor.
- Do not use a DPS model that is not suitable for your motor specifications. Using an oversized DPS model (e.g., MY-PS-10 with a 5HP motor or less) may cause the motor to overheat and generate noise due to overcurrent.
- Always verify your motor's horsepower (HP), rated current (A), and voltage (V) before selecting and connecting a DPS model.
- One DPS unit must be used for one motor only. The use of multiple motors with a single DPS is not permitted.
- The input/output voltage of the DPS MY-PS-10 is 200V-240V. Ensure your motor's voltage is also within this range. If your motor's voltage is 380V or 440V, you must reconfigure the motor's wiring to operate at 200V-240V before connecting it to the DPS output.
- The thickness of the wiring used must be appropriate for the ampere rating to prevent overheating and ensure safe operation.
- Only a single-phase motor brake is allowed. Three-phase motor brakes are not compatible with this DPS unit.
Figure 1: Important Cautionary Notes for DPS MY-PS-10 Operation.
Wiring Instructions
Connect the single-phase 200V-240V power supply to the input terminals (R, S) of the DPS MY-PS-10. Connect the 3-phase 200V-240V motor to the output terminals (U, V, W) of the DPS. Refer to the diagram below for a visual guide.
Figure 2: Wiring Diagram for DPS MY-PS-10 to a 7.5HP 3-Phase Motor.
If your motor has a magnetic starter, electronic switch, or brake, the operating wires for these devices should be connected to the 'U' and 'W' terminals of the DPS output. This ensures proper synchronization and control.
Selecting the Correct DPS Model
To ensure optimal performance and prevent damage, it is critical to select the correct DPS model based on your motor's specifications. The MY-PS-10 is designed for 7.5 HP / 5.5 kW motors with a rated current of 23 Amps. Consult the selection table below to match your motor's horsepower and rated current with the appropriate DPS model.
Figure 3: DPS Model Selection Table for Electric Motors.
Figure 4: Guidance on Choosing the Correct DPS Model for Your Motor.
Operation
Once properly installed, the DPS MY-PS-10 will convert your single-phase input into a stable 3-phase output for your motor. The unit is designed for ease of use and provides consistent power delivery.
The DPS operates by inducing 3-phase power through the motor. Therefore, you will only be able to measure a true 3-phase voltage from the DPS output terminals (U, V, W) when the motor is actively running. If the motor is not running, you will not be able to measure a complete 3-phase output.
The efficiency of the DPS MY-PS-10 is approximately 85%, ensuring effective power conversion for your applications.
Maintenance
The DPS MY-PS-10 is designed for durability and minimal maintenance. Its sealed construction helps to keep out dust, moisture, and heat, contributing to a low failure rate. The unit is also designed to be non-flammable, enhancing safety.
Regularly inspect the wiring connections to ensure they remain secure and free from corrosion or damage. Keep the unit clean and free from obstructions to allow for proper ventilation, although its sealed nature reduces the need for extensive cleaning.
Troubleshooting
If you encounter issues with your DPS MY-PS-10, refer to the common problems and solutions below:
Motor Not Working After Connection
If the motor does not start after connecting the DPS, try swapping the positions of the wires connected to the 'U', 'V', and 'W' output terminals of the DPS. It may require up to three attempts of swapping wire pairs to find the correct phase sequence for your motor to start properly.
Video 1: Troubleshooting Guide for Motor Startup Issues (Swapping Wires).
Motor Runs Hot or Noisy
This issue often indicates that the DPS model selected is too high for your motor's specifications. Ensure that the DPS model precisely matches the motor's rated horsepower, current, and voltage. Refer to the "Selecting the Correct DPS Model" section and the model selection table to verify compatibility.
No Voltage on One Phase from DPS Output
As the DPS generates 3-phase power through induction with the motor, a complete 3-phase voltage will only be present and measurable at the output terminals (U, V, W) when the motor is running. If the motor is not operating, you will not be able to measure all three phases.
DPS Input Current and Voltage are Unbalanced
An imbalance in current and voltage may occur when the motor is operating under a light load. This is typically normal behavior. The current and voltage will become balanced once the motor is loaded to more than 50% of its capacity.
Specifications
The following are the technical specifications for the DPS MY-PS-10 Digital Phase Converter:
| Specification | Value |
|---|---|
| Product Model | MY-PS-10 |
| Applicable Motor Capacity | 7.5 HP (5.5 kW) |
| Rated Motor Current | 23 Amps |
| Input Voltage | 200V-240V Single-Phase |
| Output Voltage | 200V-240V Three-Phase |
| Frequency | 50/60 Hz |
| Product Dimensions (L x W x H) | 5.1 x 4.1 x 7.2 inches (129.5 x 104.1 x 182.9 mm) |
| Item Weight | 2.5 pounds (1.13 kg) |
| Color | Grey |
| UL Listed | UL-US-2328605-1, UL-CA-2324527-1 |
Figure 5: DPS MY-PS-10 Physical Dimensions and Key Features.
Warranty and Support
Warranty information for the DPS MY-PS-10 Digital Phase Converter is typically provided with your purchase documentation. Please refer to the materials included in your product packaging for specific warranty terms and conditions.
For technical support, questions regarding product selection, or any other inquiries, please contact the seller or manufacturer directly. Their contact information should be available on the product packaging or through your point of purchase.
