Delta HT Power Quality Restorer (HTPQR)
A Comprehensive Solution for Enhanced Grid Power Quality
Visit Delta Electronics India: www.deltaelectronicsindia.com
About Delta Group
Delta, established in 1971, is a leading global provider of switching power supplies and thermal management products. The company boasts a robust portfolio of smart energy-saving systems and solutions tailored for various sectors, including industrial automation, building automation, telecom power, data center infrastructure, EV charging, renewable energy, energy storage, and display technologies. Delta is committed to fostering the development of smart manufacturing and sustainable cities.
Key Milestones and Global Presence:
- 1971: Foundation
- 72: R&D Centers Worldwide
- 8%: Of sales revenue invested in R&D globally
- Recognized as a World Leader in Switching Power Supplies and DC Brushless Fans.
- 1995: Commenced operations in Europe.
- 33: Sales Offices located in Europe
- 48: Plant Sites operating globally
- 171: Total Sales Offices worldwide
- 11.3 Billion USD: Achieved in sales revenue for 2021
A world map graphic visually represents Delta's global reach, highlighting key statistics such as the number of R&D centers, plant sites, and sales offices worldwide, alongside its founding year and revenue figures.
Delta HT Power Quality Restorer (HTPQR)
Delta's Power solutions are engineered with cutting-edge power conversion technology. Developed in a state-of-the-art research and design facility in Bengaluru, these products deliver high efficiency, reliability, and safety. Their modular and scalable design contributes to reduced complexity, minimized environmental impact, and lower total cost of ownership.
The Delta HTPQR Solution integrates highly efficient modular multilevel inverter technology with an advanced digital controller and accessories. This combination ensures safe, reliable, and stable operation while significantly enhancing grid power quality. The HTPQR Solutions address critical power quality issues such as dynamic control of load power factor, reduction in Total Harmonic Distortion (THDi) and Total Demand Distortion (TDDi), load balancing, maximum-demand optimization, and voltage regulation directly at the medium and high-voltage system level. Notably, the HTPQR solution from Delta is transformer-less, resulting in a compact design that offers the highest energy density and minimal space requirement according to industry standards.
The page features illustrative images: a modern electric train, a city skyline adorned with solar panels on buildings, and an industrial power plant. These visuals symbolize the diverse operational environments where Delta's advanced power solutions are effectively deployed.
One Solution, Multiple Benefits
- Dynamic reactive power compensation
- Current harmonic suppression
- Configurable priority for Harmonic/Reactive Power
- Load balancing
- Capability to parallel for higher rating
- Transformer-less design for capital expenditure (capex) saving
- Operational expenditure (opex) saving
- Maximum Demand (MD) reduction
- Improved voltage regulation
- Low operational losses
- IoT compliant and AI ready features
- Proudly Made in India
Additional Features
- High system availability due to its modular architecture
- Highly efficient design leveraging medium voltage technology
- Reduced noise levels achieved through minimized magnetic components
- Step-less compensation for harmonics and reactive power
- Minimal temperature rise observed both inside and outside the cabinets
- Comprehensive Overvoltage and Under voltage protection
- Overloading and IDMT (Inverse Definite Minimum Time) current protection
- Protection against Peak over current and Short circuit current
- Robust protection against temperature, humidity, and pressure variations
- Minimal manual intervention required during fault recovery processes
- User-friendly Human-Machine Interface (HMI) with secure access permissions
System Diagram Overview
The provided system diagram illustrates the key components of the HT Power Quality Restorer. It includes a Main Circuit Breaker, a Resistor Divider (RDB) configured for Voltage Sampling, a Precharging Contactor paired with a Resistor, and a Filter Inductor. The core of the system is the IGBT based Multilevel Inverter. A Hall sensor is integrated for accurate Current measurement, with connections to the neutral line (N).
Technical Specifications
Module Range
| Rated Power | 2 MVA | 3 MVA | 7.6 MVA |
|---|---|---|---|
| Utility | |||
| Nominal Voltage | 6.6 kV | 11 kV | 33 kV |
| Voltage tolerance | ±10% | ||
| Rated current | 175 A | 157 A | 132A |
| Peak current (max) (combination of reactive and harmonics current) | 253 A | 253 A | 210A |
| Overload capacity | 1.1 pu 1 min operation | 1.1 pu long time operation | 1.2 pu for 1 min operation |
| Unbalanced load compensation capacity | ≤17% | ≤17% | ≤20% |
| Frequency | 50 Hz ±10% | ||
| Connection | 3 phase | ||
| Type | Star | ||
| TDDi (Total Dynamic Distortion) | <5% (fundamental current condition) | ||
| System loss | ≤ 1.2 % | ||
| Compensation type | Load/Source side | ||
| Signal transmission | Optical-fiber communication | ||
Performance Metrics
| Metric | Value |
|---|---|
| Efficiency at full load (max) | 98.8% |
| Harmonic compensations supported | 5th, 7th, 11th and 13th order |
| Individual harmonic compensation max limits (% of rated current) | 5th order: 12.5 % |
| 7th order: 10 % | |
| 11th order: 5 % | |
| 13th order: 5 % | |
| Priority mode setting for compensation | Reactive compensation, Harmonics compensation, Equal compensation |
| Main protection functions | Over-current, Over-voltage, SCP (Short Circuit Protection), Power unit over voltage, over-current, over-temperature, communication faults |
Cabinet Specifications
| Attribute | Specification |
|---|---|
| Ingress Protection | IP42 |
| Cooling type | Forced air cooling |
| Maintenance Access | Front maintenance / Front and back maintenance |
Mechanical Specifications
| Attribute | Specification |
|---|---|
| Dimension (W*H*D) | 3600mm * 2940mm * 834mm³ |
| Weight | 3000 kg (Approx.) |
| Site Condition Dependency | Dimensions and weight are subject to site conditions. |
Environmental Specifications
| Attribute | Specification |
|---|---|
| Ambient Temperature | 0° ~ 50° C |
| Relative Humidity | 98%, no condensation |
| Altitude Range | 0 to 2,000 m / 0 to 6,562 ft |
| Pollution Degree | PD2 for the system, PD3 for the power stack |
| Overvoltage Category | III$ / III$ / II (varies by configuration) |
| Environment Category | Indoor + Outdoor suitability |
| Noise Level | ≤80 dB# / ≤85 dB# (depending on the unit) |
Note: '$' symbol indicates the requirement for external circuit breakers and a lightning arrester. '#' symbol denotes the noise level for the indoor unit.
User Interface Features
| Attribute | Specification |
|---|---|
| Monitoring Mode | Local operation; Remote control is an optional feature. |
| HMI (Human-Machine Interface) | Equipped with an LCD touch screen. |
| Embedded Features | Includes HMI functionality, data logging, and smart metering capabilities accessible via web and mobile applications (optional). |
| Data Storing Feature | Supports periodic measurements (every 5 minutes) of currents, voltages, power, energy, and other power quality parameters. Logged data can be stored for up to 3 years (optional). |
| External Communication Interface | Supports Modbus TCP, Modbus RTU protocols, and optional remote cloud monitoring. |
Contact Information
Delta Electronics India Pvt. Ltd.
Location: Bangalore
Address: Plot No 69-B,C,D, Survey No 56 and 57, Bommasandra Industrial Area, Village Hebbagodi, Hosur Main Road, Atibele Hobli, Anekal Taluk, Bangalore Dist. 560099, Karnataka, India
For Enquiries, please contact via email: mws.in@deltaww.com
