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Overview
- The dV/dT filter combines an inductor and parallel resistor network to mitigate both high frequency components and voltage spikes between the VFD and motor.
- The filter can mitigate the effects of reflected wave voltages greater than what a reactor alone can accomplish.
- The filter provides protection to the motor by slowing down the rate of voltage increase and minimizes the damaging peak voltages that occur within the motor’s windings and along the length of cables feeding the motor.
- Mitigates voltage spikes and reduces motor insulation stress
- Designed for VFD-driven systems
Specifications
Altitude | <1000 m |
Ambient Operating Temperature | -25C to 40C (suitable to 50C) Deg C |
Application | Designed for applications with long cables between the VFD and the motor |
Cooling | Natural Convection |
Current Rating | 17 A |
Enclosure | Type 1 |
Height | 5.5 in |
Inverter Operating Frequency | up to 60Hz |
Inverter Specification | Switching Frequency: 2kHz - 4kHz, Operating Frequency: up to 60Hz |
Inverter Switching Frequency | 2kHz - 4kHz |
Length | 6 IN |
Maximum Ambient Temperature | 40C (suitable to 50C) |
Minimum Ambient Temperature | -25C |
Mounting | Wall/Ceiling/Floor Mount |
NEC 480 HP | 10 |
NEC 600 HP | 15 |
NEMA Rating | Type 1 |
Peak Voltage | at Motor: 150% of DC bus voltage |
Series | HPS |
Special Features | Peak Voltage at Motor: 150% of DC bus voltage |
Standard | cUL |
System Voltage | up to 600V |
Voltage Rating | up to 600V |
Voltage Rating | 600 V |
Watts Loss | 185 |
Weight | 6 lbs |
Width | 8 in |
Package Dimensions (L x W x H) | 6 IN x 8 IN x 5.5 IN |
Package Dimensions (L x W x H) | 152.4 mm x 203.2 mm x 139.7 mm |
Package Weight (Imperial) | 6.000 L |
Package Weight (Metric) | 2.700 kg |
Frequently Asked Questions
What is the purpose of a dV/dT filter?
The HPS Centurion D1 dV/dT filter is designed to mitigate reflected wave voltages between variable frequency drives (VFDs) and motors, especially in long cable applications. It reduces peak voltages, pulse rise time, and pulse ringing to protect motor insulation and prevent premature motor failure.
What voltage systems are these filters compatible with?
The HPS Centurion D1 dV/dT filters are compatible with system voltages up to 600V, specifically designed for 480V and 600V applications. They are recommended for systems where motor damage from reflected waves is a concern.
What current ratings are available for these filters?
The filters are available with current ratings from 2A to 108A. Users should select a filter based on the motor's Full Load Amps (FLA).
What is the operating temperature range for these filters?
The filters can operate in ambient temperatures from -25°C to 40°C, with suitability up to 50°C. They use natural convection cooling and are available in open or Type 1 enclosures.
What is the maximum motor cable length?
The filters support motor lead lengths up to 600 feet. For longer lengths, users should consult HPS directly. VFD-rated cable is recommended.
How to Install the dV/dT Filter
This guide provides step-by-step instructions for the installation and initial setup of the dV/dT filter, ensuring safe and effective operation.
Estimated time: 45m
Tools needed:
Screwdriver, Wire strippers, Multimeter
Supplies needed:
Mounting screws, Terminal connectors
- Inspect the unit
Carefully inspect the dV/dT filter for any transit damage and ensure all parts are included as per the shipping documents. If any damage is found, do not energize the unit and contact the manufacturer.
- Mount the filter
Secure the dV/dT filter to a suitable mounting surface using the provided mounting screws. Ensure the unit is level and positioned in a dry area with adequate ventilation.
- Connect the wiring
Connect the output phases U, V, and W from the variable frequency drive to terminals A1, B1, and C1 on the dV/dT filter. Connect the motor terminals T1, T2, and T3 to A2, B2, and C2 respectively. Ensure all connections are tight and secure.
- Ground the unit
Ensure the dV/dT filter is properly grounded according to local electrical codes. Verify that all ground connections are secure before proceeding.
- Verify connections
Use a multimeter to check that all electrical connections are correct and that there are no short circuits. Confirm that power is off before proceeding.
- Perform a dry-out if necessary
If the dV/dT filter has been exposed to moisture, dry it out using warm air for at least 24 hours before energizing. Ensure the insulation resistance is above 10k ohms.
- Energize the unit
Once all connections are verified and the unit is dry, restore power to the dV/dT filter. Monitor for any unusual sounds or overheating during initial operation.
Frequently Asked Questions about Hammond Power
What certifications and standards do Hammond Power products comply with?
Hammond Power products are certified to UL (Underwriters Laboratories) and CSA (Canadian Standards Association) standards in North America. Our products meet rigorous safety and performance requirements, with many items classified as UL Listed Products or Recognized Components. We also comply with international certifications including China Compulsory Certification (CCC), C-Tick for Australian EMC requirements, and ANCE for Mexico.
What is Hammond Power's warranty policy?
Hammond Power provides a standard one-year warranty on all products, covering defects in workmanship and materials. Products will be repaired or replaced free of charge if found defective upon factory inspection. The warranty does not cover damage from improper handling, incorrect application, or faulty installation.
What industries and applications are Hammond Power products used for?
Hammond Power products are engineered for critical industrial and commercial applications across multiple sectors, including petrochemical, mining, construction, renewable energy, e-mobility, power storage, and microgrids. Their comprehensive product range of dry-type transformers, power quality solutions, and magnetic components enables electrical distribution and electrification in diverse industrial environments worldwide.
What are the main product lines offered by Hammond Power?
Hammond Power Solutions offers a comprehensive range of dry-type and liquid-filled transformers for industrial and commercial applications. Their primary product lines include power transformers for renewable energy, e-mobility, data centers, microgrids, and industrial settings. The company provides both standard and custom-designed transformer solutions that are critical to electrical distribution networks across multiple industries.
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Hammond Power offers industrial enclosures with comprehensive environmental ratings, including UL/cUL 508A ratings of Type 1, 2, 3, 4, 4X, 12, and 13. Their products meet IEC 60529 IP66 standards, providing robust protection against dust, water ingress, and harsh environmental conditions. Specific ratings vary by product series, with options ranging from indoor Type 1 enclosures to outdoor-rated Type 4X enclosures suitable for challenging industrial environments.
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Hammond Power Solutions provides comprehensive technical support through multiple channels. Customers can access technical resources via phone support in Canada, the United States, Mexico, and internationally, with toll-free numbers and regional contact points. Their technical team offers personalized assistance for custom design inquiries, helping customers find standard transformer and power solutions or develop specialized electrical products for various industrial applications.
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Hammond Power offers a comprehensive range of accessories for industrial electrical components, including HME Series handles with key locking and padlocking options, door stop kits, light kit mounting brackets, and standard hardware like mounting screws and washers. These accessories are designed to enhance functionality and installation flexibility across their product lines.
How are Hammond Power products typically installed?
Hammond Power transformers are typically chassis-mounted using precise mounting hole centers and dimensions specific to each product series. Installation involves selecting the appropriate primary voltage configuration, securing the transformer to a mounting surface using the specified mounting holes, and connecting terminals according to the product's schematic. Most Hammond Power transformers feature multiple terminal options like solder or quick-connect terminals, allowing flexible and straightforward installation in industrial control and power distribution applications.