# Nancal Electric

> Shanghai Nancal Electric specializes in the R&D, production, sales and service of power electronic products, and is committed to providing users with products as medium voltage drives, soft starters, APF, SVG and customized solutions.

## Contact Us
- [Mail](mailto:sales.sh@nancal.com): sales.sh@nancal.com
- [Tel](tel:+86-18217165478): +86-18217165478

## Social Media
- [Facebook](https://www.facebook.com/shanghai.nancal/)
- [Linkedin](https://www.linkedin.com/company/shanghai-nancal)
- [Twitter](https://twitter.com/shanghai_nancal)
- [Youtube](https://www.youtube.com/channel/UCn8HvegnVBih19JtfQDXCiw/featured)
- [Instagram](https://www.instagram.com/shanghai_nancal/)

## Website Language Versions
- [English](https://www.nancalelectric.com): Nancal Electric
- [Chinese](https://cn.nancalelectric.com): 大容量高压变频器引领者
- [Russian](https://ru.nancalelectric.com): Shanghai Nancal Electric Co., Ltd.
- [Spanish](https://es.nancalelectric.com): convertidor de frecuencia, arranque suave, filtro armónico activo, inversor de frecuencia, unidades de CA de voltaje medio - Shanghai Nancal Electric Co., Ltd.
- [Persian](https://ir.nancalelectric.com): Shanghai Nancal Electric Co., Ltd.

## Website Navigation
- [Home](https://www.nancalelectric.com/index.html): Home
- [Products](https://www.nancalelectric.com/products.html): Products
    - [Medium Voltage AC Drives](https://www.nancalelectric.com/Medium-Voltage-AC-Drives-pl3020032.html): Medium Voltage AC Drives
        - [Compact Medium Voltage AC Drives](https://www.nancalelectric.com/NC-HVVF-Compact-Medium-Voltage-Drives-pl3685841.html): Compact Medium Voltage AC Drives
        - [Air-Cooling Medium Voltage AC Drives](https://www.nancalelectric.com/NC-HVVF-Air-Cooling-Medium-Voltage-Drives-pl3585841.html): Air-Cooling Medium Voltage AC Drives
        - [Water-Cooling Medium Voltage AC Drives](https://www.nancalelectric.com/NC-HVVF-Water-Cooling-Medium-Voltage-Drives-pl3485841.html): Water-Cooling Medium Voltage AC Drives
    - [Low Voltage Industrial AC Drives](https://www.nancalelectric.com/Low-Voltage-Industrial-AC-Drives-pl3920032.html): Low Voltage Industrial AC Drives
    - [Medium Voltage Soft Starters](https://www.nancalelectric.com/Medium-Voltage-Soft-Starter-pl3820032.html): Medium Voltage Soft Starters
    - [Shore Power](https://www.nancalelectric.com/Shore-Power-pl3710032.html): Shore Power
    - [Power Quality Products](https://www.nancalelectric.com/Power-Quality-Products-pl3610032.html): Power Quality Products
        - [Active Power Filters](https://www.nancalelectric.com/Active-Power-Filter-pl3510032.html): Active Power Filters
        - [Static Var Generators](https://www.nancalelectric.com/Static-Var-Generator-pl3928032.html): Static Var Generators
        - [Hybrid Var Compensators](https://www.nancalelectric.com/Hybrid-Static-Var-Generator-pl3410032.html): Hybrid Var Compensators
        - [Smart Power Quality Correct Devices](https://www.nancalelectric.com/Smart-Power-Quality-Correct-Device-pl3828032.html): Smart Power Quality Correct Devices
- [Case Study](https://www.nancalelectric.com/case-study.html): Case Study
    - [Drives&Starters](https://www.nancalelectric.com/Drives-Starters-ic243311.html): Drives&Starters
    - [Power Quality](https://www.nancalelectric.com/Power-Quality-ic212311.html): Power Quality
    - [Shore Power](https://www.nancalelectric.com/Shore-Power-ic261311.html): Shore Power
- [Solutions](https://www.nancalelectric.com/solutions.html): Solutions
- [News](https://www.nancalelectric.com/news.html): News
- [Support](https://www.nancalelectric.com/download.html): Support
    - [Download](https://www.nancalelectric.com/download.html): Download
    - [Q&A](https://www.nancalelectric.com/faqlist.html): Q&A
    - [Basic Knowledge](https://www.nancalelectric.com/Video.html): Basic Knowledge
- [About Us](https://www.nancalelectric.com/aboutus.html): About Us
- [Contact Us](https://www.nancalelectric.com/contactus.html): Contact Us

## Product Category
- [Low Voltage Industrial AC Drives](https://www.nancalelectric.com/Low-Voltage-Industrial-AC-Drives-pl3920032.html): Low Voltage Industrial AC Drives
- [Medium Voltage AC Drives](https://www.nancalelectric.com/Medium-Voltage-AC-Drives-pl3020032.html): Medium Voltage AC Drives
    - [NC HVVF Compact Medium Voltage Drives](https://www.nancalelectric.com/NC-HVVF-Compact-Medium-Voltage-Drives-pl3685841.html): NC HVVF Compact Medium Voltage Drives
    - [NC HVVF Air Cooling Medium Voltage Drives](https://www.nancalelectric.com/NC-HVVF-Air-Cooling-Medium-Voltage-Drives-pl3585841.html): NC HVVF Air Cooling Medium Voltage Drives
    - [NC HVVF Water Cooling Medium Voltage Drives](https://www.nancalelectric.com/NC-HVVF-Water-Cooling-Medium-Voltage-Drives-pl3485841.html): NC HVVF Water Cooling Medium Voltage Drives
- [Medium Voltage Soft Starter](https://www.nancalelectric.com/Medium-Voltage-Soft-Starter-pl3820032.html): Medium Voltage Soft Starter
- [Power Quality Products](https://www.nancalelectric.com/Power-Quality-Products-pl3610032.html): Power Quality Products
    - [Active Power Filter](https://www.nancalelectric.com/Active-Power-Filter-pl3510032.html): Active Power Filter
    - [Static Var Generator](https://www.nancalelectric.com/Static-Var-Generator-pl3928032.html): Static Var Generator
    - [Hybrid Static Var Generator](https://www.nancalelectric.com/Hybrid-Static-Var-Generator-pl3410032.html): Hybrid Static Var Generator
    - [Smart Power Quality Correct Device](https://www.nancalelectric.com/Smart-Power-Quality-Correct-Device-pl3828032.html): Smart Power Quality Correct Device
- [Shore Power](https://www.nancalelectric.com/Shore-Power-pl3710032.html): Shore Power

## FAQ
- **Q: Which cooling method is used for Nancal Electric MV VFDs?**
  A: Air Cooling: 220kVA - 30MVA Water Cooling: 7MVA -180MVA
- **Q: How many types of Power Quality products does Nancal Electric have?**
  A: APF: Active Power Filter (Harmonic compensation) SVG: Static Var Generators (Reactive power compensation)
- **Q: How to choose the appropriate type of power filter?**
  A: Renovation projects: Nancal Electric will recommend the appropriate model through a professional test report that includes all information on system voltage, current, harmonic content, harmonic spectrum, and etc. New projects: The designer cannot get enough data and can use a simple empirical formula as reference.   a) Distributed compensation: install multiple filters at places near the harmonic sources. Remarks: I h  -------- Rated current of harmonic source (loading). K --------- Load factor, usually set to 1. THD i  ---- Total harmonic current distortion. b) Centralized compensation: a power filter is installed on the secondary side of the transformer to compensate for harmonics in different branches. Remarks： S -------- Rated capacity of transformer. U -------- Rated voltage of the secondary side of the transformer. I h  -------- Rated current of harmonic source. THD i  --- Total harmonic current distortion. Depending on the loading, there are some empirical values for reference. The values for 6-pulse and 12-pulse low voltage inverters are between 30% and 45%. K -------- Load factor, usually set to 1.
- **Q: In addition to capacity, what else should be considered when selecting an APF？**
  A: Please refer to the following several areas: -The voltage range of the system. -The installation position of the CT. We recommend that the CT be installed on the load side, harmonic source side. -The connection method of the system: three-phase three-wire system or three-phase four-wire system. -The level of protection. -The cable entry: from the top or from the bottom.
- **Q: Does Nancal Electric APF compensate for even harmonics?**
  A: Nancal Electric standard products have taken into account normal 2nd and 4th harmonics. If the site situation are other even harmonic compensation requirements, please communicate with Nancal Electric sales for customization.