Piller Product History - Uniblock
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UNIBLOCK - Premium Uninterruptible Power Supply
- Voltage and Frequency stabilisation
- Galvanic Isolation of mains and load
Information processing, communications,
production processes . . .
without data processing the wheels stand still.
Modern information technology has become an indispensable requirement in the running of our private
and business lives. Computer systems assist man, and in the industrial sector for example, facilitate
processes which would not be possible without them. The electronic revolution is still in its infancy.
The complexity and speed of EDP systems is increasing.
Developments in the automation of industrial processes are extremely fast.
The probability of system failures increases at the same time.
Computer systems have no say without a trouble free power supply
The enormously important role played by an interference-free power supply clearly makes risk analysis imperative.
The VDEW (German Association of Electricity Supply Services) comments: "Due to the increasing performance,
processing speed and integration level of electronics, the requirements placed on the quality of power
supplied to EDP systems are so high that the necessary energy cannot usually be drawn directly from the
public supply network".
The Facts:
Nearly every day a mains failure occurs that lasts longer than 10 ms and seriously endangers the operation
of computer centres.
16% of all malfunctions in compu-ter centres can be attributed to technical problems.
The power supply is one of the problems.
50% of all risks arise from mistakes and negligence.
This also applies to incomplete safety strategies.
Mains disturbances are the cause, loss of income is the result.
We protect you from both.
Many businesses are not aware of the very real threat which is posed by database loss.
The re-assembly of lost data is in most cases impossible or extremely time-consuming. Production breakdowns
reduce efficiency. An analysis made in the USA forecasts the survival times of the following sectors after
the failure of their EDP systems:
- Banks 2.0 days,
- Commerce 3.3 days,
- Industry 4.9 days,
- Insurance companies 5.6 days.
These facts clearly show how important an intact power supply is and the significance an UPS system has for your company.
Protect the income -
-take stock
The safety balance sheet clearly shows that investment in an
Uninterruptible power supply (UPS) is a decision which protects your earnings.
The formula:
What your UPS system must be capable of:
look at objective criteria.
Only one of many problems, and certainly not the most frequent.
Disturbances in the power supply, with
their disastrous effects, can be both numerous and unexpected.
These mains disturbances include:
- Short breaks
- Total failures
- Frequency deviations
- Voltage deviations
- Glitches
- Harmonics
All load disturbances must of course be taken into consideration when choosing the correct UPS system:
- Non-linear loads
- Load changes
- Unbalanced loads
- Overloads
- Peak currents
- Short-circuits
- Mains feed back
Only UPS systems with electrical isolation provide full protection for loads against all
potential risks.
Only UPS sets which meet all the requirements offer uncompromising security.
There is no question that the UPS set must have a high degree of intrinsic safety in order to provide this
protection at all times.
The UPS system must have all the required characteristics. It must ensure a
consistent power flow over the entire sine wave.
Essential UPS performance is very much dictated by the
technology used in its output stage.
Two systems are employed:
Natural voltage generation
Synthetic voltage generation
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The graphic illustrates the comparison of the systems in the
practical situation: The red line shows the typical load current waveform of a large computer centre.
The distortions in the current wave-form clearly show the effects of non-linear loads.
Important features are high distortion factors and crest factor (peak currents) up to multiples of the rated
current. Other events are short-circuit currents, for example.
In systems with synthetic voltage generation
(grey and green lines) semiconductor inverters and series filters produce an incomplete sinusoidal output voltage.
The current-carrying capacity of these components and thermal overload capability is limited by the technology.
The performance is therefore irregular. Current spikes are not always taken care of, short-circuit currents can
not be generated. The oscillatory characteristics of the filters, triggered by the load currents, is also a problem.
Only the conventionally-generated voltage (blue line) offers full performance and therefore complete
protection over the entire sine wave.
Piller has therefore developed a breed of UPS systems with true
generator-type power generation. This is the UNIBLOCK - a combination of the latest power electronics and a
unique electrical machine. It guarantees unrestricted energy flow under all load conditions. Just like the
alternator of a power station, the UNIBLOCK produces a flawless sinewave. Only then is maximum security and
flexibility guaranteed. The widest range of loads can there-fore be supplied without problems, both initially
and through any upgrades.
The UNIBLOCK UPS performance makes it the leader in UPS technology
Only the UNIBLOCK, with its naturally generated voltage offers risk-free UPS operation. The powerful,
flawless output voltage guarantees full performance over the entire sinewave.
The UNIBLOCK
-Maximum security without compromise
UNIBLOCK 625kVA Redundant version
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Piller has many years experience internationally in high performance
power supply systems. The UNIBLOCK technology is based on this know-how. The unique UPS concept is the ideal
combination of high performance machine construction, proven power electronics and the latest micro-electronics.
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The generator-type power source provides the conditions for the optimum
supply of both motor loads and solid state equipment. It is therefore extremely suitable for both EDP and
industrial applications. Piller has established itself as the international market leader in this technology.
Many thousands of installed systems worldwide are proof of this.
The preferences at a glance
Electrical isolation provides full protection against all mains disturbances.Internal redundancy for
maximum reliability. Even a single module provides 4 independent supply paths. Unvaried output under all
load requirements. Even short circuit currents are internally generated.High efficiencies, both in full load
and partial load modes, guarantee low operating costs. Optimum operating convenience due to single push-button
operation and high degree of data transparency. Variants tailored to every application. Field-proven range of
accessories. Natural ventilation by integral shaft fan. Relaxed inverter design with natural commutation for
highest availability.
The UNIBLOCK power electronics consists of the rectifier, inverter and Thyristor switch modules.
Combination with the UNIBLOCK machine allows simple circuit designs. Problematical filters and power
capacitors are therefore superfluous. The result is a further safety plus point.
Compact modular construction
for space-saving installation. Rear access unnecessary. High degree of intrinsic safety due to powerful,
highly efficient machine design in conjunction with proven power electronics.
Stable performance due to microprocessor control and regulation.
All system parameters are defined in the software, which ensures that the specified operating characteristics
are accurately maintained over long periods.
Minimal input supply distortion due to the direct UNIBLOCK
connection and 12-pulse rectifier.
Today and in the future, PILLER UNIBLOCK offers you complete UPS protection.
Natural voltage generation
provides a secure supply for changing load configurations.
Higher energy requirement is covered by power-parallel
operation (a 16 MW system already installed).
A further level of security can be achieved by redundant
parallel operation.
The UNIBLOCK already offers electronic environmental protection because it causes
no mains feedback.
Software updates match the system to changing operating conditions.
Comprehensive
microprocessor monitoring, protection and data storage system with remote diagnostics facility.
Innovation for your benefit:
Few components - many functions
The construction principle of the
UNIBLOCK system combines a motor and a generator in one, three-phase synchronous machine.
The windings of both components are incorporated in a shared stator and are excited by a common rotor.
The energy transfer from the motor to the generator takes place via direct magnetic coupling without loss
and without electromechanical conversion. This provides electrical isolation between the mains supply and the load.
The advantage of this form of construction is a machine with high load-carrying capacity, is robust, wear-free,
highly efficient, can be loaded continuously and overloaded and has outstanding technical characteristics.
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The UNIBLOCK prevents mains disturbances:
Motor winding for
magnetic rotating field
Damper cage filters harmonics
Exciter winding for constant magnetic field
Generator winding for flawless sinewave.
The UNIBLOCK prevents load disturbances reaching the mains:
the damper cage absorbs current harmonics and reactive currents, irrespective of load current and load powerfactor.
Unbalanced loads are equalised.
Input distortion factor <= 2%.
Input power factor cos phi 1.0.
Symmetrical input current.
The UNIBLOCK functions guarantee absolute protection
Mains glitches are
fully suppressed.
Electrical isolation protects your loads.
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Constant voltage supply:
50% load step DU + 5%.
100% load step possible.
Inrush currents up to 3-times the rated current.
150% load for 2 minutes.
100% unbalanced load possible.
Full power factor range.
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Fault discrimination:
14-times rated current guarantees
disconnection of faulty load within 10 ms.
The remaining loads are unaffected.
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Free choice of loads:
Low source impedance.
Linear internal resistance.
Unlimited peak currents (crest factor) (> 10-times rated current).
Peak currents do not require derating of UPS system rating.
Distortion factor 1.5% in normal operation.
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Your requirements determine the solution.
UNIBLOCK "S' connection (Series on-line)
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The UNIBLOCK offers you the full UPS standard.
The UNIBLOCK machine supplies the loads. It is supplied via the rectifier and the inverter. The rectifier is used
to isolate the mains frequency and to charge the battery. Mains failures are bridged by the battery.
An automatic by-pass is available for emergency use.
The loads are switched from the UPS supply to direct
mains supply without a break. Manual changeover is also available if required.
Features:
- Removes all mains disturbances
- Covers all load disturbances
- Reliable, MTBF > 91,000 hours
- Efficiency up to 92%
- Problem-free installation
- High power density: 150 kVA per m3
- Self ventilated, direct exhaust air ducting
- For mounting against a wall
- Side-by-side mounting
- Simple installation, modular construction
- Top or bottom cable entry
- Low-noise operation
Sample of installation: Two UNIBLOCK-R systems, rating 2 x 625 kVA
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UNIBLOCK "R" connection (Internal redundant Series on-line)
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The UNIBLOCK-R offers fourfold security
The UNIBLOCK machine is supplied via two comple-tely independent paths. In normal operation the sup-ply is
via the Thyristor switch; there is no mains feed back and the efficiency is enhanced.
The system also has the rectifier/inverter path as active redundancy and the automatic by-pass as emergency
redundancy. The battery bridges mains failures. The single module UNIBLOCK-R offers the security of a
conventional parallel - redundant solution.
Features:
Removes mains disturbances
Handles all load disturbances
Maximum reliability, MTBF > 600,000 hours
Reduced operating costs,
efficiency up to 95%
Sinusoidal input current
UNIBLOCK "RB" connection
(Internal redundant Parallel on-line)
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The UNIBLOCK-RB Offers the greatest economy
The loads are supplied directly via the Thyristor switch. The UNIBLOCK machine filters and stabilises the
voltage to the load. This increases the efficiency. As active redundancy the system also has the rectifier/
inverter path. Emergency redundancy is provided by the automatic by-pass. The battery bridges mains failures.
This design is particularly recommended for industrial drive installations or installations with clean
earthing conditions. These sets can be easily converted to an UNIBLOCK-R with electrical isolation if
environmental conditions change or greater security requirements are demanded.
Features:
High efficiency
(up to 96.5%) for lowest running costs
High availability, MTBF > 600 000 h
Mains disturbances effectively
attenuated
High short circuit current capability
UNIBLOCK-PLUS Design (Direction coupled diesel
engine)
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The UNIBLOCK-PLUS - the long-term UPS
The combination of UNIBLOCK machine and diesel engine results in a complete, compact power supply system.
Short mains failures are bridged by the battery. The diesel mode is used in the event of prolonged mains failures.
The motor winding of the UNIBLOCK machine can be used to supply power to emergency loads. A self sufficient
power supply sys-tem is therefore available, which meets the require-ments of different load groups in complex
installations. The UNIBLOCK-PLUS is obtainable in S, R and RB versions. Detailed information is available on request.
UNIBLOCK-PLUS 250 kVA dynamic UPS + 150 kVA stand-by generating set
Click here
to view UNIBLOCK Specifications
UNIBLOCK-T Short & Long Term Uninterruptible Power Supply Systems
UNIBLOCK-T Voltage Restorer
Acts as a bi-directional filter and provides high quality power
ADVANTAGES
Correction of
mains disturbances
Correction of load disturbances
Power factor correction
Extremely high short
circuit current
Operation without energy store
Compensation of -20% undervoltage for unlimited time
(-100% / 20ms)
UNIBLOCK-T POWERBRIDGE / Battery
Contains the advantages of the
UNIBLOCK-T Voltage Restorer, buffers mains interruptions up to minutes, using kinetic energy store or battery
ADDITIONAL ADVANTAGES
Injects and absorbs high energy instantaneously
Stabilization of frequency
(in island application)
Overrides total mains failures for seconds (POWERBRIDGE) or even minutes (Battery)
Compensates undervoltage of -20% continuously without exhausting the energy store