STR33 EVO 100 TO 800KVA

download Brochure

Highlights

• High efficiency (up to 95.5% in ON LINE mode)
• Rectifier IGBT based technology
• Rectifier IGBT based technology
• High overload capacity
• LCD display

The STR33 evo series from 100 to 600 kVA is the SATRON UPS solution for installations requiring high energy efficiency and maximum power availability.

STR33 evo Series provides maximum protection and power quality for data centres and industrial loads. The UPS has an IGBT-based rectifier, DSP (Digital Signal Processor) technology and provides true-line, double conversion power protection, (VFI SS 11- Voltage and Frequency Independent in accordance with IEC EN 62040-3).

DSP (Digital Signal Processor) control to provide maximum protection, power quality and green energy for any type of application including data centres, disaster recover sites, telecoms rooms, industrial processes and security applications. High efficiency stands for higher active power available if compared with legacy UPS thanks to output unitary power factor (up to +25% if compared unity with same UPS at P.F 0.8). Nominal power is granted with no downgrading independently from operating temperature in the range 10-40 °C. Furthermore, control circuits and specifically designed firmware grant outstanding ON LINE double conversion efficiency up to 95.5%, comparable with the best transformer-free UPS available on the market

Maximised Cost Savings

The STR33 evo has the ability to monitor the mains input quality and to select the best operating mode based on the interference present (Smart Active mode) or circular redundancy (Parallel Energy Saving mode), which allows the UPS to regulate available capacity based on the immediate demands of the load, automatically switching to standby in the event of excess capacity. The STR33 evo also offers high levels of efficiency for partial loads, resulting in reduced operating costs

Power Continuity

For years, SATRON UPS has developed and supplied solutions for dealing with the different requirements and problems that inevitably arise in critical applications. SATRON UPS offers flexible, high-availability solutions that are able to adapt to different system structures and critical levels. SATRON UPS creates UPS systems that can tolerate a number of components or subsystem failures, while continuing to operate normally, providing power without interruption. This is achieved by careful design, installing redundant elements, eliminating common failure points, scheduling maintenance activities and controlling and supervising the system operating parameters and environment. The service team is ready to provide guidance and advice on projects

ZERO IMPACT SOURCE

The STR33 evo series features the added advantages of the Zero Impact Source formula offered by an IGBT based rectifier assembly. This eliminates problems connected with installation in networks with limited power capacity, where the UPS is supplied by a generator set or anywhere there are compatibility problems with loads generate current harmonics. STR33 evo series UPS have zero impact on the power supply source, whether it is a mains grid or generator set:

• Input current distortion
• Input power factor 0.99;
• Power walk-in function that ensures progressive rectifier start up;
• Start-up delay function, to restart the rectifiers when mains power is restored if there are several UPS in the system.

Battery Care System

STR33 evo series UPS include a range of features designed to prolong battery life and reduce their usage such as different recharging methods, deep discharge protection, current limitation and voltage compensation according with battery room temperature. Thanks to the STEP-UP/STEP-DOWN converter, that provides to recharge and discharge the battery, the current ripple in the battery is extremely reduced; this arrangement enhance the battery reliability since it is no longer connected to UPS DC bus. In the battery is extremely reduced; this arrangement enhance the battery reliability since it is no longer connected to UPS DC bus.

Complete Galvanic Separation

STR33 evo UPS feature an output isolation transformer (delta zig/zag type) on the inverter as part of the inverter circuit inside the UPS cabinet, providing galvanic isolation between the load and the battery with improved versatility in system configuration, allowing:

• Complete UPS output galvanic isolation for critical infrastructures from the battery DC power source
• Two truly separated supply inputs (main and bypass), which can be taken from two different power sources (with different neutrals); this is particularly well suited to parallel systems in order to ensure selectivity between the two sources, thus improving the reliability of the entire installation
• No neutral input connection is required at the UPS rectifier input stage; this method is particularly favourable in order to prevent the transmission of common neutral disturbances via the neutral conductor
• No effects to the UPS output performance or reduced impact of the inverter power components whilst supplying specific loads; in addition the inverter transformer minimises the impact of third harmonic disturbances, prevents the effects of energy back feed into the inverter when supplying industrial load applications and can supply unbalanced loads
• High inverter short circuit current to clear faults which occur between phase and neutral on load side (up to three times nominal current)

Output transformer housed within the cabinet which allows for a significant reduction in the footprint and provides space saving   

Main Features

• High efficiency up to 99.4% (STANDBY ON Mode)
• Compact size: e.g.: only 0.85 m2 for the STR33 evo 250 kVA
• Reduced weight for transformer based UPS
• Double load protection, both electronic and galvanic, towards the battery

The entire STR33 evo range is suitable for use in a wide range of applications. Thanks to the flexibility of configuration, available options and accessories, it is suitable for supplying any type of load, e.g. capacitive loads such as blade servers, rather than motor drivers or any other critical vertical application

Smart Grid Ready

Being Smart Grid Ready, Master HP/ HE allows for the implementation of power accumulation solutions, and at the same time ensures extremely high levels of efficiency. It is also able to independently select the most efficient operating method based on the status of the grid. STR33 evo UPS are also able to electronically interface with the energy manager using the smart grid communication network

Maximum Reliability And Availability

• Distributed parallel configuration of up to 8 units per redundant (N+1) or power parallel system
• Centralised parallel system up to 7 units with centralised bypass system (MSB)
• Dual bus configuration: allows two or more non-parallel UPS devices to remain synchronised even during mains power failure by adding the UGS device. The UGS also enables a SATRON UPS to be synchronised with another power source that is independent and of a different power rating
• Dynamic Dual bus configuration: allows two groups of UPS with the PSJ device to be connected in parallel whilst operating, in the event of maintenance (with no interruption to the output), using a power coupling switch. Should one of the UPS in one of the parallel groups fail, it is automatically excluded. The PSJ connects the remaining UPS, to the other parallel group via an external bypass, in order to continue to guarantee load redundancy. Allows two groups of UPS to be connected in parallel whilst operating, in the event of maintenance (with no interruption to the output), using a power coupling switch. Should one of the UPS in one of the parallel groups fail, it is automatically excluded. The PSJ connects the remaining UPS, to the other parallel group via an external bypass, in order to continue to guarantee load redundancy
• Hot System Expansion (HSE): allows the addition of a further UPS into an existing system, without the need to switch off the existing UPS or transfer them to bypass mode. This guarantees maximum load protection, even during maintenance and system expansion
• Maximum levels of availability, even in the event of an interruption to the parallel bus cable: the system is “FAULT TOLERANT”. It is not affected by connection cable faults and continues powering the load without disruption, signalling an alarm condition
• Efficiency Control System (ECS): a system to optimise the operating efficiency of parallel systems, according to the power required by the load. N+1 redundancy is guaranteed, with every UPS working in parallel at the best load level possible to achieve higher overall efficiency

Centralized Bypass Cabinet

The SATRON UPS centralised bypass (named MSB) is available in four power ratings: 800, 1200, 2000 and 3000 kVA. Intermediate solutions within this range can be made, as well as solutions greater than 3000 kVA based on the requirements of the customer or application. The MSB centralised bypass can be integrated with the STR33 evo range; in fact it can be associated with up to 7 UPS modules in the range, obviously without static bypass and associated bypass line (named STR33 evo NBP). Based on requirements thus ensuring complete flexibility aimed at satisfying all power and power supply requirements. SATRON UPS provides the same flexibility as the Master HP for the battery bus, so that the UPS units can operate with both shared and separate batteries.

The 800 kVA MSB is supplied with a comprehensive cabinet including bypass line input switch (SWBY), system output switch (SWOUT) and manual bypass (SWMB). The 1200 kVA model is supplied as standard without any switches but can be equipped with the same, suitably proportioned, switches provided for the 800 kVA models (SWBY, SWOUT, and SWMB). The more powerful models are supplied with no switches; the bulky sizes of disconnection devices at these power levels are such as to favour tailor-made engineering solutions as an additional part of the system attestation and distribution cabinets where the centralised bypass and STR33 evo NBP modules are fitted.

Parallel Configuration Of Up To 8 Ups Units With Distributed Bypass

Parallel architecture to ensure redundancy of the power source

+ Flexibility and modularity and no single point of failure.