Low Frequency Online Modular UPS 100KVA Module Uninterruptible Power Supply UPS System

The UPS consists of the following subassemblies:

RECTIFIER

Standard is six pulse rectifier, optional is twelve pulse to reduce input current distortion.

Represents the input stage and transforms the alternating voltage of the power line in continuous voltage. The

functions carried out by the rectifier are the following:

- powering the inverter with direct current.

- charging the battery automatically. Battery charging is done in two phases: the first phase supplies 80% of

power with limited current (recharging current) and growing voltage. The second supplies the remaining 20%

of the charge with steady voltage (holding).

Recharging current is automatically limited to 15% of the capacity in Ah contained in the memory. This recharging

current imposed applies only when the total power delivered to the battery and the load does not exceed maximum

110% of Pn.

HARMONIC REDUCTION FILTER (optional)

The filter is positioned to the entry of the rectifier, allows to reduce the input harmonic distortion of the input current.

It is composed by two inductors and by a group of capacitors. The filter is protected in entry with some fusible.

EXTERNAL BATTERY

Provides the reserve energy for powering the load when there is no power input to the UPS.

INVERTER

This is the output stage. Converts direct voltage from the RECTIFIER or BATTERY into stabilized sinusoidal

alternating voltage. It is always in operation and the load connected to the output of the UPS is always powered by the

INVERTER.

STATIC SWITCH

This device allows the instantaneous automatic or manual switching of the power feed from the secured line

(INVERTER output ) to an unsecured line (BY-PASS line) or vice versa.

The STATIC SWITCH is supplied with a device, BACKFEED PROTECTION that prevents the danger of current

returns on the reserve line, in the case of Mains power failure due to a break on the SCR. The SCR are protect by

FSCR fuses.

SWMB

Maintenance switch, by closing the SWMB and opening the other switches SWIN, SWBY, SWOUT the UPS is excluded, maintaining the output feed.

This operation is necessary when you have to carry out maintenance operations inside the equipment, without being obliged to interrupt the power feed.

With the SWMB closed and all the other switches open, there is no voltage inside the equipment (voltages are present only in the terminal board area and in the switches area, N.B. in the threephase output version the neutral conductor is not interrupted.).

As a manufacturer with over 10 years of experience, Shenzhen ZGD Technology Co., Ltd. has more than 10 production lines which can produce 100,000 pieces of UPS every month. Over 10% of our staff members are engineers and professional technicians and more than 400 are skilled workers. Our company specializes in the research, manufacture and marketing of power supply products and lead acid batteries with different capacities. We manufacture online UPS with double-conversion and PFC, offline UPS with AVR and CPU control and inverters with the latest technology. Our UPS, power products and solar power systems provide complete power solutions to suit different applications ranging from 1KVA single user requirement to large industrial requirement of 40KVA.Our products have features of data protection, fault management and fault tolerance. After years of unremitting practices and efforts, we have developed products with self-master intellectual rights and core competence. We have been a mature and first-class supplier of power supply products.

Application Fields:
Shenzhen ZGD Technology Co., Ltd. provides products and services in many countries around the world. Our products are extensively applied in fields of telecommunication, electric power, railway, finance, securities, hospital, school, aviation, airport, taxation, custom house as well as frontier defense, traffic, education, public security, national defense, energy sources and national key projects. They have won users' consentaneous compliments by complete varieties, reliable quality and perfect post-service.

Operation Principle:
No matter in what condition, we will put our customer at the first place, consider for customers and give them best service to meet their proper needs. We will firmly adhere to the enterprise culture of "uninterrupted power, uninterrupted progress". We will pay much attention to the quality of our products and try our best to make high-rank products.

With our own team of fully trained technicians, we can also provide you with a complete range of support services, including system design consultancy, installation, commissioning and maintenance.

We warmly welcome any inquiry on our products or our company. We believe that we can establish mutually beneficial business relationships with you for our high quality products and your marketing channels.

There is still long distance to be perfect, but please believe us, we will narrow the distance of becoming perfect with our efforts in the near future. Choosing us is choosing the bright future for you.