MODULAR RECTIFIERS WATER COOLING

MODULAR RECTIFIERS WATER COOLING

The fundamental characteristic of the Powerel rectifier is its totally modular construction. Each module is independent and complete with all its functions and can provide a maximum output of 20 kW. Up to 32 modules can be connected in parallel, thus achieving very high currents and powers.




Technical Data

Power Supply Three phase 400 VAC without neutral
Currents supplied for module MAX 1250 A
Voltages supplied for module MAX 400 V
Power for module MAX 20 kW
Controlled modules
(parallel or series) 		MAX 32
Modules for tower MAX 8
Standard efficiency 85%
Maximum efficiency 88%
Range power adjustment 2% ÷ 100%
Ripple <= 2% (<1% on demand)
Dielectric insulation 2500 V RMS
Serial connection Profinet, Profibus, Canopen, RS485 ASCII, RS485, Modbus-RTU, 0-10V, 0-20mA, 4-20mA
Max working themperature 40° C
Maximum humidity 90%
Protection and maintenance Short circuit, Over temperature, Tropicalizzation electronic cards, epoxy painted or, zinc plated metal parts, air filters, protection electronics parts.
Cooling Water
Protection degree IP41 (IP65 on demand)
Protection and maintenance It is always possible to add one or more modules to increase the power of the rectifier.
Integrated electronic All the electronic of the rectifier is contained in only one card easily replaceable.
Particular features Electrical distribution in each module with pull-out connector, Water distribution in each module with taps in “supply” and “return” sides, Internal heat exchanger with temperature controller , Main water solenoid valve with anti-condensation control.


Weight and Dimensions

From To Case Dimensions w, d, h Weight
1250 A - 8 V 350 A - 60 V W1 600 x 730 x 750 mm 165 kg
2500 A - 8 V 700 A - 60 V W2 600 x 730 x 1000 mm 225 kg
3750 A - 8 V 1050 A - 60 V W3 600 x 730 x 1250 mm 285 kg
5000 A - 8 V 1400 A - 60 V W4 600 x 730 x 1500 mm 360 kg
6250 A - 8 V 1750 A - 60 V W5 600 x 730 x 1750 mm 435 kg
7500 A - 8 V 2100 A - 60 V W6 600 x 730 x 2000 mm 525 kg
8750 A - 8 V 2450 A - 60 V W7 600 x 730 x 2250 mm 615 kg
10000 A - 8 V 2800 A - 60 V W8 600 x 730 x 2500 mm 705 kg

(Example of configurations, other solutions available)




The real modular switching rectifier

Powerel presents the first real modular switching rectifier.
People usually believes that the construction using separate modules, represents a “modular” rectifier. Actually from the point of view of the supplied current this is not wrong, but remains unresolved the rectifier’s communication and control problems depending on an extra hardware (the control module) whose failure makes the rectifier totally unusable.
The disadvantage points are several:
  • limited use of modules in function of the best capacity of the control module;
  • assistance essentially delegated to producer;
  • possibility to connect in parallel more rectifiers with only one current control;
  • control hardware failure with the stopping of the entire rectifier.
The new modular TM series is built in the way that each single module be itself a complete rectifier with all the functions and equipped both of the control module and of the power module. At the starting, the rectifier makes the control of the available modules and arranges for checking the best way to manage currents and tensions required. In case of mechanical failure of a module, in addition to show it to the user, it automatically get out of service and the necessary current/tension are supplied from the others modules within the upper limit in a totally automatic and transparent way from the automation PLC.
The replacement operation of a faulty module takes 10 minutes and can be made by a normal technician, all the connections are plug and play, with removable connectors (movie www.powerel.it)
It clearly remains confirmed the availability of traditional control panels DE100, DE200 touch screen, and the connections MODBUS-RTU, PROFIBUS, PROFINET, etc.
Canbus technology
The control is entrusted to the first available module

Traditional technology
ADVANTAGES
Energy saving The combination of the lowest energy consumption and the better metal deposition allow savings from 15% to 40% compared to traditional rectifiers.
Flexible power It is possible to increase, remove or simply switch off the modules according to need
Space reduction The layout of a modular rectifier is constructively less of 40% compared to a traditional one.
Separation of electronic parts In each module the forced air is filtered at the entrance and is never in touch with the electronic parts.
Ripple content The residual ripple measured is less than 2% (1% on request).
Phase shift (Cos Ø) Phase sift is 0.99 so it does not require systems of rephasing.
Independent modules operation Each module is independent of the others and can assume both master and slave configuration. If in slave configuration can be turned off and dispensing is guaranteed by the other modules. The master can never be off, but a slave can become a master.
Electronic card replacement Each module has only one electronic card with all the functions of the rectifier. The replacement is a lot easy and can be done by a normal maintenance technician. Movie on www.powerel.it
Power module replacement It is also easy to replace an entire module by a normal maintenance technician. Video on www.powerel.it