AKA was founded in 1988 and specialized in power control applications for the Glass Industry. The first thyristor power controllers were designed for ALSTOM ® - CEGELEC ® under “Gradathyr” trade mark. The Gradathyr SCR Power Controller was dedicated to the lehr and tin bath heating systems for float glass plants. Thanks to ALSTOM technical and sales offices, around 2000 Gradathyrs have been commissioned worldwide. ALSTOM stopped its float glass division in late 2004. In 2006 AKA released its new generation AKGrad32 which has been marketed directly by AKA up to now.
The AKGrad32 portfolio ranges from 60A to 2500A up to 690VAC at 47- 63Hz. It is 99% compatible with Gradathyr unit for an easy upgrade during cold repair revamping. The 32bits DSP-based AKGrad32 is a powerful SCR power controller integrating:
AKA, the global market challenger for thyristor power controllers, supplies standard and customized power controllers since 1988:
AKA focuses on power control applications for the glass & cement industries. For instance, all major cement plant manufacturers have experienced our LRH Medium voltage motor starters: Lafarge, FLS, FCB, Toshiba, etc. Our reactive team is dedicated to our clients: no waste of energy, all efforts are concentrated on key power control features. AKA designs original products and focuses on a fast time to market with lower development risks thanks to mature technologies.
AKA’s innovative solutions for the LCD & Automotive Glass Industry
The AKABox Multizone power controller optimizes electrical heating systems with hundreds of small heaters ranging from 1 to 30kW up to 690V at 47-63Hz. This powerful processing unit with special algorithm enables you to reduce energy costs. The load management strategy is very easy to use. The user does not need to study manuals or to have learned about synchronization methods. Just start in the “Easy mode”. The power requests of the single loads are just read and written via Modbus-TCP Ethernet & Profibus-DP to the AKABox.
Power savings Technology
The Glass Industry deals with environmental regulations as well as economic and technical constraints. Electrical heating systems integrating SCR power controllers may generate lots of perturbation on the power line as well as high annual energy costs. Our AKA power controllers are supplied with integrated « SYNCHRO » energy saving feature which reduces drastically THD total harmonic distortion, reactive energy consumption, current and power peaks during process and finally improve power factor and reduce your power bill by at least 5% at the same time it enables easy start-up with power supply generator set.
|Address||15 rue des Pyrenees
|Phone||0033 1 6076 1555|
|Fax||0033 1 6497 2487|
|Name||Mr. Charles Taieb|
|Phone||0033 1 6076 1555|
|Name||Mr. Dr.-Eng. guillaume lestriez|
AKA Power Control: a long-term partner of the Glass Industry.
The AKGrad32 SCR Power Controller ranges from 60A to 2500A up to 690VAC at 47 to 63Hz with Profibus and Ethernet. AKA upgrades your Alstom Cegelec Gradathyr with the AKGrad32 control card: cost-effective Cold Repair Solution.
In order to simplify stocks, ordering and maintenance management, the whole range uses a single 32bits-Processor-based powerful electronic Control Card with a single firmware for all applications: tin bath downstream transformer with SiC, lehr heaters, boosting electrodes, etc. The AKGrad32 SCR Power Controller performs a well-balanced regulation of the power of the heaters connected to its Thyristors by switching ON or OFF every half cycle (10ms) of the AC power line according to the setpoint defined by your process up to 0.1kW accuracy.
This patented “real-time Fast Full Wave” firing optimizes the life of the heaters according to the specifications of high quality refractory manufacturers. Kanthal ® specifies Full Wave firing with duty cycle below 100ms for its SiC heaters while AKA’s duty cycle is two times shorter: for instance, the AKGrad32 performs a 60% setpoint with 20ms OFF and 30ms ON.
AKGrad32 Firing Modes
Cold Repair Expertise: upgrade of existing Gradathyr Controllers
Our powerful Control Card has 99% compatibility with previous Alstom ® / Cegelec ® Gradathyr and AKGrad Thyristor Power Controllers. To replace your Gradathyr Control Card with our state-of-the-art AKGrad32 Control Card (99% Compatibility), AKA:
AKGrad32 Specifications: Powerful Power Regulator controlled with reliable Fieldbus
The 32bits DSP of the AKGrad32 measures and calculates true RMS mains voltage V, current A, power kW and resistor OHM for each phase. This powerful measurement system enables:
It offers the following features as standard:
It offers the following options:
|732166||AKgrad32 EN 200.pdf||download|
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