3 Phase 1000kVA SCR Static AVR

Designed for mega‑infrastructure and heavy industrial environments, the 3 Phase 1000KVA SCR Static AVR delivers 1000KVA/1520A of contactless voltage stabilization. Its 150% overload capacity (30s), redundant cooling, and IEC 61850 communication ensure reliable integration into ports, mines, data centers, and facility power dispatch centers.

What challenges does the power supply guarantee for large-scale infrastructure face?

1. Extreme load shock.

The large cranes of port's shore cranes can have a single power capacity of over 500KW. When multiple units start simultaneously, the transient current shock may reach several megawatt levels. The large crushers of mines have a startup time of up to several tens of seconds, during which the voltage remains persistently low. These working conditions impose extremely strict requirements on the dynamic and thermal stability and shock resistance of the voltage stabilizing equipment.

2. Harsh environmental conditions.

Port equipment is constantly exposed to salt fog erosion, while mine equipment is exposed to high dust environments. The distribution facilities in open-pit mines need to withstand extreme temperature differences ranging from -30℃ to 50℃. The voltage stabilizer not only needs to stabilize the voltage but also must operate reliably under these harsh conditions.

3. Continuous production without downtime requirements.

Once a large bulk cargo terminal is interrupted in operation, the detention cost of a 200,000-ton cargo ship can reach several hundred thousand dollars per day. If the mine hoist stops, the underground operations face the threat of production suspension. In this context, the reliability of the power supply equipment is the operational guarantee.

Design  Advantages

· Large-capacity redundant design: Rated capacity 1000KVA, instantaneous overload capacity up to 120% for 1 hour, 150% for 30 seconds, capable of calmly handling the simultaneous startup shock of large motor groups.

· Redundant cooling system: Equipped with dual intelligent temperature-controlled fans, one in use and one as backup. When the main fan fails, the backup fan automatically engages to ensure the equipment operates continuously in high-temperature environments.

· Heavy-duty structural design: Cabinet size 1030×1000×1970mm, net weight 1850kg, using thickened sheet metal and heavy-duty chassis, with excellent seismic performance.

· Natural advantage of isolation transformers: Achieving electrical isolation between input and output through electromagnetic coupling, having natural resistance to lightning surges and grid peaks, especially suitable for remote large-scale mining areas, ports, etc., where the power grid infrastructure is weak.

Smart management advantages

The 3 Phase 1000KVA SCR Static AVR, as the flagship product, is equipped with more complete monitoring and communication capabilities. In addition to the standard RS485 interface, it can be expanded with Ethernet communication, optical fiber communication, etc., supporting IEC 61850 and other power industry standard protocols, and can be seamlessly connected with the power dispatching center (DCC) of large facilities. The digital LED display can simultaneously display three-phase voltage, current, power, load rate, internal temperature, etc., all dimensions of operation parameters.

Product Parameter

Key Features

1. Megavolt-Ampere level ultra-large capacity

Rated capacity 1000KVA, output current 1520A, capable of covering the entire power supply bus of a port gantry crane, the entire lifting and crushing system of a medium-sized mine, or the complete IT load group of a large data center.

2. Extreme overload capacity

Can withstand 120% rated load for 1 hour and 150% rated load for 30 seconds. For extreme working conditions such as multiple gantry cranes in the port starting simultaneously, or the simultaneous operation of a mine crushing machine group, SBWZ-1000KVA does not need to bypass and can continuously provide stable output voltage.

3. Redundant cooling design

Uses dual fan redundant design, with automatic switching between primary and backup. The temperature control strategy of the outlet is optimized to ensure that when operating at full load in an environment with a temperature of 40℃, the internal temperature rise is strictly controlled within 60℃.

4. High efficiency

Under typical working conditions of 1000KVA capacity and an average annual load rate of 65%, compared to traditional servo-type voltage stabilizers (efficiency 96%), SBWZ-1000KVA can save approximately (1000×0.65×4%×8760) ≈ 227,760 kWh of electricity per year. Calculated at an industrial electricity price of 0.7 yuan per kWh, the annual electricity savings are approximately 160,000 yuan - within less than two years, the electricity savings can recover the equipment incremental investment.

5. Complete environmental protection

The cabinet protection level can be customized to IP40 or IP54, suitable for harsh installation environments such as ports, mines, and open-air projects. The heavy-duty sheet metal structure and seismic base design meet the installation requirements for high-impact operation areas.

6. Comprehensive power dispatch center (DCC) integration capability

Standard equipped with RS485 communication interface, expandable to Ethernet, optical fiber communication, and IEC 61850 protocol. Real-time upload of all dimensions of operation data (three-phase voltage/current/power/electric energy quality/temperature/alarm status), meeting the remote monitoring and centralized management requirements of large infrastructure power dispatch centers.

Product Applications

1. Ports and Terminals: Provide centralized voltage stabilization protection for large-scale loading and unloading equipment such as gantry cranes, portal cranes, rubber-tyred gantry cranes, and belt conveyors, ensuring the efficiency of port operations and reducing equipment failures due to voltage issues.

2. Mining and Metallurgy: Used for power supply systems of large-power equipment such as mine hoists, large crushers, ball mills, vibrating screens, and belt conveyors, ensuring the continuity of mining and beneficiation processes.

3. Large Data Centers and Cloud Computing Hubs: Provide ultra-clean and highly reliable voltage-stabilized power supplies for IT load groups, precision air conditioning systems, and UPS front ends of ultra-large-scale data centers.

4. Airport Infrastructure: Used for power supply of airport navigation lighting systems, automatic luggage sorting systems, boarding bridge power systems, and core electromechanical equipment of terminal buildings.

5. Large Industrial Parks and Economic and Technological Development Zones: As the core power quality management equipment for the entire park's main incoming lines, provide voltage stability, harmonic isolation, and power quality data support for the entire park.

6. National-level Research Facilities: Provide stable power supplies for large scientific facilities with extremely high power quality requirements, such as large accelerators, superconducting laboratories, and nuclear fusion research devices.

Customization Services

KTAC provides OEM/ODM services, including appearance color, packaging method, input/output voltage range, and special function modules (such as EMI filter devices, lightning protection devices, RS232/RS485 monitoring interfaces), etc. Please contact us for customized solutions.

FAQ

1. What is the overload capacity of the 1000KVA stabilizer? Can it withstand the simultaneous startup of multiple large motors?

The overload capacity of SBWZ-1000KVA is as follows: it can sustain 120% of the rated load for 1 hour and 150% of the rated load for 30 seconds. For the simultaneous startup of a large group of motors, as long as the duration of the impact current is within 30 seconds, the stabilizer can remain online and operate without switching to the bypass mode. For particularly extreme startup conditions (such as a total startup power exceeding 1500KVA), we can configure a soft start solution during the system design stage.

2. How does this 3 Phase 1000KVA SCR Static AVR cooperate with a 10KV/0.4KV transformer?

SBWZ-1000KVA is installed on the low-voltage side bus of the 10KV/0.4KV transformer (typically 1250KVA to 2000KVA). It is equivalent to inserting a "stabilizer isolation layer" between the transformer and the large load. It is recommended to configure a frame-type circuit breaker (ACB) at the front end of the stabilizer as a protection and isolating switch, and configure distribution cabinets according to specific load zones at the rear end.

3. How is the 1850kg weight transported and installed?

The equipment base has forklift holes and lifting rings, which can be positioned using forklifts, hydraulic handling vehicles, or cranes. During transportation, the equipment is fixed with wooden supports, and the internal key components are filled with shock-absorbing materials. The foundation installation site should use C30 concrete pouring, with a thickness of ≥150mm, and preset M12 anchor bolts. Specific installation dimensions and load requirements can be found in the "Installation Manual".

4. How is the reliable switching of the dual redundant fans achieved?

Each of the two fans has an independent power supply circuit and control circuit. When the main fan is running, the standby fan is in standby mode. When the main fan fails or its speed is lower than the set threshold, the control system automatically switches to the standby fan within 1 second, and simultaneously sends an alarm signal through the communication interface. This design ensures that even if a single fan fails, the equipment can still operate at full load normally.

5. Why are SBWZ series recommended for large-scale projects instead of traditional servo-type stabilizers?

The two core reasons are: one is speed - the response time of servo-type stabilizers is usually in the second range, and they are almost unable to respond to grid fluctuations (lasting tens to hundreds of milliseconds); the response time of SBWZ is 10ms to 40ms, which can effectively capture and compensate for fluctuations. The second is reliability - the carbon brushes of servo-type stabilizers are wear-prone parts, and they wear faster in high-power applications, requiring regular shutdown for replacement; SBWZ is a fully contactless design, requiring no shutdown for maintenance, and has significantly higher reliability. For large infrastructure, these two differences directly determine the availability level of the power supply system.

6. Can the 3 Phase 1000KVA SCR Static AVR be used in grid-connected power generation systems (such as photovoltaic power stations or wind power fields)?

OK. SBWZ-1000KVA supports dual frequencies of 50/60Hz and can be used in the station power system of new energy power plants. It provides stable power for the switch power supply, control system, fire protection and ventilation equipment of the step-up station. Moreover, when the station power is completely dependent on the grid supply during the night or low-light periods in photovoltaic power stations, the voltage stabilizer can ensure that the equipment in the station is not affected by the voltage fluctuations of the grid.