Piller Product History APOSTAR-AS

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APOSTAR AS

High power on-line Uninterruptible Power Supply
60 to 400 kVA

- Reliable
- Economical
- True on-line UPS
- High efficiency
- 100% unbalanced load capability
- Galvanic isolation
- APONET power management
- Remote monitoring
- Remote control
- Remote diagnostics
- Parallel operation



APOSTAR AS
Maximum security combined with high economy and maximum convenience

Complex computer centres or automated production facilities make high demands on UPS systems. Non-linear loads have to be handled as safely as sudden peak loads and overloads caused by inrush currents. UPS systems of this size are permanent components of the building structure and represent a high investment. No compromise can therefore be made in the safety and economy of the UPS.

Security without compromise

APOSTAR is the UPS which meets the highest power supply security requirements and is particularly economical. A combination of 16-bit micro-controllers and the latest electronic power compo-nents controls, regulates and monitors all UPS functions with the highest degree of reliability.

Click here to view connection diagram


The APOSTAR on-line technology con-tinuously delivers a constant output volta-ge and frequency. The load is supplied without interruption by the inverter even in the event of a line failure.

To protect the load against damage by voltage errors, it is electrically isolated from the battery by a transformer. Even with 100% unbalanced loading, due to its special connection arrangement the transformer provides a very high degree of voltage accuracy to avoid endangering the operation of the critical loads. Load changes do not affect the quality of the output voltage. They are corrected with instantaneous-value accuracy by the inverter using pulse-width modulation with variable clock frequency.

Non-linear loads - the predominant part of EDP systems - produce high peak currents. The quality of the output vol-tage is maintained even with a peak current to rated current crest factor of 3.5 (voltage distortion factor < 3%). Change-over to bypass operation is not therefore necessary. Full UPS protection is therefore guaranteed. To reduce system perturbation, the input rectifier of the APOSTAR can be a 6-pulse type with harmonic filter or a 12-pulse type. This provides optimum matching to the specific conditions of the customer's supply system.

Secure battery availability

The battery is an important component of every Uninterruptible power supply. The state of the battery is therefore con-tinuously monitored by the microprocessor controller.

Temperature-controlled battery charging prolongs the life of the battery.

The built-in battery cut-off character-istic offers reliable protection against exhaustive discharge

Cyclical battery tests indicate the pre-sent condition.

The battery monitor displays the residual capacity of the battery and determines for how long the loads can be supplied. An alarm is generated if the remaining time is less than a pre-set residual value.


Security through digitisation
Stable performance due to the microprocessor control of the controller boards. All system parameters are set in the software This ensures that the predetermined battery values are precisely maintained over long periods. The high reliability of the controller boards has been confirmed by approval for use in nuclear power stations.

Security at a glance
All necessary data is available at the control panel.

Status indicators (tri-colour LEDs) of the mimic display tell you the current operating state.

An LED bar chart shows the instan-taneous loading. An 80-character LC display provides additional information in plain language. All operating data can be called up via a menu.

Interfaces (RS 232/RS 485) are available for remote indication and for connection to building services management systems.

Verified safety

The APOSTAR AS conforms to the new UPS standard EN 50091 and the CE requirements. It has quality assurance certification in accordance with KTA Rule 1401.

Economy does not only depend on maximum efficiency

IGBTs, the modern power transistors, are used in the APOSTAR's inverters. They operate with particularly low losses and are largely responsible for the high efficiency over the entire power range.
The system efficiency is 94% at just 50% loading. It reaches its optimum at 75% loading.

Click here to view the Efficiency curve of the APOSTAR

Low-cost expandability

The standard version of the APOSTAR can operate in the parallel mode and requires no external controller (no master-slave process). A subsequent increase in power by simply connecting further devices in parallel is therefore very economical.

Maximum operating convenience

PILLER APOSTAR
Click here to view APOSTAR Specifications