Rectifier bridges for Traction Applications
Main characteristics
Output power range from 500 up to 7200 kW
Output nominal voltage ( EN50163 ):
600, 750,1500, 3000 Vdc.
other output voltages are available on request.
Mechanical construction criteria include open frame and metallic cubicle structures as well as fixed or withdrawable solutions.
The power semiconductors diodes of the press-pack technology are manufactured by POSEICO S.p.A.
Careful monitored protection systems are designed to protect the rectifiers against overvoltages, overcurrents and overtemperatures.
The main applications are as energy supply in light, medium and heavy power traction systems.
The rectifiers are designed and manufactured by POSEICO S.p.A. under its
Quality System Certificated according ISO9001:2008 and IRIS Rev02.
Reference Standards:
EN 50327, EN 50328 and EN50329
Since 1980, POSEICO started, in parallel with its production of power semiconductors devices, to rmanufacture
power rectifiers for traction applications.
The big experience in power electronics and the care in the customer's satisfaction, allowed POSEICO to expand this activity becoming one of the leader in this field. POSEICO is a reliable supplier of traction rectifiers for the main European railways, metro
and tram lines. In 2010 in order to satisfy the increasing demand and to offer a more and more efficient service,
POSEICO moved the rectifier production to a new facility located in busalla (20 km far from the head quarter located in genoa) of
2500 m2 assembling area having a testing room with the possibility to test 6 - 12 and 24 pulse rectifiers up to 4000V and 15000 A.
POSEICO RECTIFIER CARACTERISTICS
POSEICO can design, manufacture and test rectifiers for all DC voltages traction systems according to EN50163 Standard:
- 600 V DC;
- 750 V DC;
- 1500 V DC;
- 3000 V DC.
Other output voltages are available on request.
The power starts from 600KW up to 7.2MW
It’s possible to offer every type of solution: open frame, closed cubicle, withdrawable solutions.
The rectifiers are designed, manufactured and tested according to the EN50328 and IEC 60146-1 Standards.
Normally the rectifiers are natural air cooled to increase reliability and service continuity.
On request, it is possible to have air forced or water cooled rectifiers.
The basic solution is a 6 pulse rectifier (three phase graetz bridge) but, to minimize the harmonic distortion, it is possible to supply 12 pulse or 24 pulse rectifiers. Moving to 12 or 24 pulse configurations the choice of the transformer technical characteristics becomes fundamental. POSEICO can support its customers in the definition of the transformer technical specification and is able to supply complete rectifier groups: rectifier + transformer(s) including bus bars electrical connections among them.
The rectifier can be manufactured with or without fuses based on customer's request; the fuses allow,in case of internal fault of the rectifier (one diode failed), to interrupt the short circuit current.
The rectifier can have a different number of diodes in parallel or in serie for arm.
This last solution is adopted when the power is too big for only one diode or in case of redundancy request.
In case of redundancy the fuse is designed not only to interrupt the short circuit current due to internal fault but to assure the selectivity of the system too.
In case of 3KV applications POSEICO can assure the rendundancy using both diodes in series connection and diodes in parallel connection in each arm. In both cases, the POSEICO experience in high power semiconductor manufacturing allows to have an extremely accurate component matching to minimize the unbalance in voltage or in current respectively.
| Electrical characteristics | ||||
| Type of connection | N° 8,9,12 tb.4 EN50328 | |||
| Nominal Voltage | V | 750 | 1500 | 3000 |
| Ideal no Load Voltage | V | 796 | 1800 | 3600 |
| Insulation Test Voltage | KV | 4.6 | 9.2 | 18.5 |
| Frequency | Hz | 50/60 | ||
| Nominal Current | A | 500÷4000 | 500÷4000 | 100÷4000 |
| Diodes in series per arm | 1 | 1 | 1÷5 | |
| Diodes in parallel per arm | 1÷4 | |||
| TYPE OF REDUNDANCY immunity level EN 50328) |
R (No loss of performance) |
|||
| Diode Failure Monitoring Pollution Degree Protection Degree |
Alarm System Unit PD3A ( EN 50124-1 ) IP00÷IP55 |
|||
The rectifiers are protected from overvoltage coming from DC and AC side by RC circuits with or without fuses.
The rectifier in standard configuration has the following signals:
- Temperature alarm
- Temperature trip
In case of fuse in series connection with each diode:
- diode alarm (in case of one diode failed in each arm)
- diode trip (in case of a second diode failed in one arm)
The signals are available on the terminal block . As option it is possible to connect all the signals to a PLC and transmit them via SCADA.
It is also possible to have the voltage and current measurements displayed on the front of the cubicle and/or trasmitted via SCADA.
| Rectifier for traction applicatios |
Protection degree |
Type of connection | Convention at power |
Nominal voltage |
Nominal current |
Rectifier Diodes POSEICO type |
Number of arms |
Diodes in series per arm |
Diodes in parallel per arm |
Total diodes quantity |
Weigth | References Photo |
| [kW] | [V] | [A] | [kg] | |||||||||
| Nominal Voltage 750 V; natural air cooling | ||||||||||||
| RA6442 | IP00 | EN50328 N° 8 tab.4 | 500 | 750 | 666 | AR1104S22 | 6 | 1 | 1 | 6 | 210 | |
| RA6443 | IP00 | EN50328 N° 8 tab.4 | 520 | 575 | 900 | AR3004S25 | 6 | 1 | 1 | 6 | 230 | |
| AR6613 | IP00 | EN50328 N° 8 tab.4 | 750 | 750 | 1000 | AR3004S25 | 6 | 1 | 1 | 6 | 260 | |
| RA6441 | IP00 | EN50328 N° 8 tab.4 | 800 | 750 | 1066 | AR2004S22 | 6 | 1 | 1 | 6 | 230 | |
| AR6612 | IP00 | EN50328 N° 8 tab.4 | 900 | 750 | 1200 | AR3004S22 | 6 | 1 | 1 | 6 | 260 | 2 |
| AR6614V | IP30 | EN50328 N° 8 tab.4 | 900 | 750 | 1200 | AR749LTS22 | 6 | 1 | 1 | 6 | 400 | |
| AR6614 | IP00 | EN50328 N° 8 tab.4 | 1000 | 750 | 1333 | AR749LTS22 | 6 | 1 | 1 | 6 | 280 | |
| RA6701D | IP00 | EN50328 N° 9 tab.4 | 1200 | 750 | 1600 | AR3004S22 | 12 | 1 | 1 | 12 | 525 | |
| RA6455 | IP00 | EN50328 N° 8 tab.4 | 1500 | 750 | 2000 | AR2004P24 | 6 | 1 | 4 | 24 | 806 | |
| AR1560 | IP00 | EN50328 N° 8 tab.4 | 1500 | 750 | 2000 | AR747LTS22 | 6 | 1 | 1 | 6 | 460 | |
| RA6651 | IP32 | EN50328 N° 8 tab.4 | 2500 | 750 | 3333 | AR749LTS22 | 6 | 1 | 3 | 18 | 1500 | |
| RA3901D | IP00 | EN50328 N° 9 tab.4 | 3000 | 750 | 4000 | AR748LTP22 | 12 | 1 | 2 | 24 | 1780 | |
| RA3901E | IP00 | EN50328 N° 8 tab.4 | 3000 | 750 | 4000 | AR748LTP22 | 6 | 1 | 3 | 18 | 1730 | |
| RA3911E | IP00 | EN50328 N° 8 tab.4 | 4000 | 750 | 5333 | AR748LTP22 | 6 | 1 | 4 | 24 | 1890 | |
| Nominal Voltage 1500 V; natural air cooling | ||||||||||||
| AR6615 | IP00 | EN50328 N° 8 tab.4 | 900 | 1200 | 750 | AR3008S32 | 6 | 1 | 1 | 6 | 300 | |
| RA6447 | IP00 | EN50328 N° 8 tab.4 | 1500 | 1500 | 1000 | AR770LTS24 | 6 | 1 | 1 | 6 | 330 | |
| AR6625 | IP00 | EN50328 N° 8 tab.4 | 1650 | 1650 | 1000 | AR1104P26 | 6 | 1 | 4 | 24 | 400 | |
| RA3640E | IP31 | EN50328 N° 42 tab.4 | 3000 | 1500 | 2000 | AR2004P24 | 12 | 1 | 4 | 48 | 2200 | 5 |
| RA3610 | IP00/IP32 | EN50328 N° 12 tab.4 | 3500 | 1500 | 2333 | AR1104P21 | 12 | 1 | 4 | 48 | 1800 | |
| RA1531D | IP00 | EN50328 N° 9 tab.4 | 4000 | 1500 | 2667 | AR772P44 | 12 | 1 | 2 | 24 | 1850 | |
| RA1531E | IP00 | EN50328 N° 8 tab.4 | 4000 | 1500 | 2667 | AR772P44 | 6 | 1 | 3 | 18 | 1700 | |
| RA1631D | IP00 | EN50328 N° 9 tab.4 | 5000 | 1500 | 3333 | AR772P44 | 12 | 1 | 3 | 36 | 2050 | |
| RA1631E | IP00 | EN50328 N° 8 tab.4 | 5000 | 1500 | 3333 | AR772P44 | 6 | 1 | 4 | 24 | 1850 | |
| RA1320NG | IP00 | EN50328 N° 12 tab.4 | 6600 | 1650 | 4000 | AR3004P26 | 12 | 1 | 4 | 48 | 2x1030 | |
| RA1340P/N | IP00 | EN50328 N° 12(x2) | 6600 | 1650 | 4000 | AR1104P26 | 24 | 1 | 4 | 96 | 4x875 | 4 |
| Nominal Voltage 3000 V; natural air cooling | ||||||||||||
| RA1651NG3600 | IP00 | EN50328 N° 9 tab.4 | 3600 | 3000 | 1000 | AR3007S30 | 12 | 5 | 1 | 60 | 2x515 | |
| RA1552 | IP00/IP32 | EN50328 N° 12 tab.4 | 5100 | 3400 | 1000 | AR771S50 | 12 | 1 | 1 | 12 | 2x500 | |
| RA1651NG5400 | IP00 | EN50328 N° 9 tab.4 | 5400 | 3000 | 1500 | AR3008S30 | 12 | 5 | 1 | 60 | 2x555 | 3 |
| RA1851 | IP21 | EN50328 N° 12 tab.4 | 7400 | 3000 | 2468 | AR772P50 | 12 | 1 | 3 | 36 | 2000 | 1 |
