CHADI BACKGROUND

Established in 1985, CHADI has grown into one of the pioneer suppliers of power supply system in China and undertook numerous projects for China National Defense, governments, police departments, banks, hospitals, telecom companies, Beijing Olympics,Shanghai Expo and etc..Since 1998, Beijing metro system has used CHADI power system for the communication system and hereafter the page of using foreign brands has been turned.CHADI  people are keenly devoted to the research and development in the Uninterruptible Power Supply field and winning long standing reputation with reliable quality and worry-free service.

Back to the history before 1985 when CHADI’s former roll was China State-owned Power Transformation Corporation, this group had been the first company and the biggest company working on the field of power transformation and power supply in China. 

After the reformation of state-owned PTC, the reborn CHADI arises and advances with the pace of China new economic surge in the past decades, and grows into a large UPS solution provider. 

      The board are founded by:

       Mr Z, a former UPS engineer of Jiuquan Satellite Launch Center 

       Doctor Liao, a post-doctor of high power transformation

       Doctor Liu, a post-doctor of high frequency UPS 

CHADI MILESTONES

In 2015, CHADI UPS is listed on the OTC market of Guangdong Shares Exchange Center

In 2014, Carrying on the UPS projects for Beijing Metro Yanfang Line and Line 8

In 2013, CHADI achieved annual turnover of 100 million USD

In 2012, CHADI is listed in OTC stock market 

In 2010, CHADI UPS reliably performed in Shanghai Expo

In 2010, CHADI moved from its premise from Xiabei to Han Science Park

In 2009, CHADI UPS served for Harbin World University Games

In 2008, CHADI UPS powered up China Rocket Project Shenzhou 7

In 2007, CHADI UPS equipped to Beijing Olympics 

In 2005, CHADI is authorized as the Power Lab for master graduates

In 2003, CHADI  is officially awarded as National high-tech Enterprise

In 2001, CHADI UPS were applied in Hong Kong Metro

In 2000, CHADI BRAND established service network through the country

In 2000, CHADI represents as Municipal Research Center

In 1999, CHADI operates ISO9001 supervised by TüV Rheinland 

From 1998 till now, CHADI provided UPS for Beijing Metro Lines

In 1997, CHADI engineered heavy duty UPS for Navy force and Air force

In 1996, CHADI became a licensed supplier to National Defense

In 1995, CHADI joint venture with Italy CHANGE

In 1993, CHADI carried cooperation with China Satellite Launching Base

In 1985, CHADI rebuilt from China Power Transformation Corporation 

CHADI TECHNOLOGY

The UPS industry in China was derived from Foshan city. Foshan established the first UPS factory in China 30 years ago. And thereafter, the UPS industry in Foshan has flourished and renowned in China. Aluminum profiles, ceramics, furniture and electrical equipment are the four major industries of the city. The municipal government deploy and fund municipal laboratories in the leading companies of these major industries. 

       In UPS field in Foshan, CHADI UPS has been entitled as the Municipal Lab of UPS and received yearly about 100 million RMB fund from the municipal government. 

      CHADI UPS LAB is focusing on the below:

       High power UPS system 

       High frequency IGBT rectification

       Wireless monitoring system

       High precise UPS for communication signal

       Heavy-duty UPS for military purpose

CHADI UPS as the batteries are always connected to the inverter, so that no power transfer switches are necessary. When power loss occurs, the rectifier simply drops out of the circuit and the batteries keep the power steady and unchanged. When power is restored, the rectifier resumes carrying most of the load and begins charging the batteries.

The Double-conversion UPS provides a layer of insulation from power quality problems. It allows control of output voltage and frequency regardless of input voltage and frequency.

CHADI Online line UPS systems are available to suit different kinds of load / equipment.  

CHADI UPS are designed to ensure that companies can protect their mission critical applications by maintaining a steady flow of energy under adverse circumstances. An uninterruptible power supply is an electrical apparatus designed to furnish emergency power even when other sources of input power fail, and they are indispensable tools within a huge number of unrelated industries. These devices differ from a standby generator or an auxiliary or emergency power system in that in the event of a disruption to input power, a UPS will provide near-instantaneous protection for mission critical applications in the form of energy stored in batteries.

The high cost of electricity is not a factor that businesses can afford to ignore when considering their overhead. Every company, no matter how large or how small, must monitor its power use in order to avoid consuming too much. CHADI UPS are known for efficiency and for saving not just energy, but money that would be wasted by less advanced devices that require too much power.

CHADI Online UPS makers provides an freelance, no break supply of fresh, stable, transient free uninterrupted power supply offer with output neutral secured to ground, defend essential hundreds against transmission line disturbances and loss of business power. The Online UPS given accurately controlled wave AC output with none line disturbances.

The CHADI Online UPS system includes uninterrupted power supply of a rectifier, associate motorcar float bodily fluid boost charger, battery backed electrical converter with below V, over V short-circuit protection along side a high degree of Input to Output isolation.

The award-winning UPS designed by CHADI act as advanced power managers, ensuring the availability of an uninterrupted power supply to protect hardware and mission critical applications. High-quality UPS function as an essential safeguard against many potential energy issues, including voltage surges and spikes, voltage sags, total power failure, and frequency differences. By making sure that their systems are set up to retain access to a stable power supply, even during failure events, companies can greatly reduce their costs while continuing to keep operations running smoothly.

CHADI latest SVPWM (Space Vector Pulse Width Modulation) technology upon the IGBT power switching tube enhance the utility of the DC voltage by15% and simultaneously eliminate the harmonic content by a large proportion, comparing to the conventional SPWM  (Sinusoidal Pulse Width Modulation) technology. 

Dual DSP (Digital Signal Processor) enables overall digital control on UPS process of rectification and inversion and the charge and discharge of the batteries. The machine is equipped with true color LCD touch screen, an emergency switch and physical memory for information log.

The advanced Synchronized Equivalent Flow Control technology manages rigid synchronized operation and equivalently divides the load current  for each UPS unit in the Redundancy Parallel Array (RPA). These SEFC technology and RPA technology enhance the reliability of the UPS system to a highest level and promote the system lifes-pan to the most. CHADI technologies can well manage 32 units of UPS in the RPA mode.

 •  The Double-conversion UPS provides a layer of insulation from power quality problems. It allows control of output voltage and frequency regardless of input voltage and frequency.

 •  IGBT SVPWM technology with 100% input to output isolation ensures complete safety of load. Quick transient response ensures enhanced crest factor allowing connectivity to more computers without rebooting problem. 

 •  Dual DSP (Digital Signal Processor) basing on ART@Cortex TM-M enables overall digital control on UPS process of rectification and inversion and the charge and discharge of the battery. The machine is equipped with LCD screen, an emergency switch and physical memory for information log.

 •  The latest SVPWM (Space Vector Pulse Width Modulation ) technology upon the IGBT power switching tube enhance the utility of the DC voltage by 15% and simultaneously eliminate the harmonic content by a large proportion, comparing to the conventional SPWM (Sinusoidal Pulse Width Modulation ) technology.

The UPS manage the control on each individual phase among the three phases separately by the means of rejecting the negative-sequence and zero-sequence components of output-voltage, it implements controlling the imbalance ratio of the three phases’ output-voltage and the Imbalance ratio <5% (under 100% imbalance loads).