ETSR21 / ETSR22 — traction silicon rectifiers 750/1500 V DC, 1000–4000 kW
ETSR21 and ETSR22 are traction silicon rectifiers of 750 and 1500 V DC with power from 1000 to 4000 kW. Cooling is natural, efficiency is over 99 %. They supply the catenary of metros, trams and light metro.
- Output voltage
- 750 V DC (ETSR21) / 1500 V DC (ETSR22)
- Power
- 1000/2000 kW (ETSR21); 2000/3000/4000 kW (ETSR22)
- Input voltage
- 300/1200 and 600/1200 V AC
- Circuit
- 6- or 12-pulse, transformer △/△ or △/△-Y
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The traction silicon rectifiers ETSR21 and ETSR22 convert alternating current to direct current in traction power supply systems and are designed for the harsh conditions of real operation. The ETSR21 with an output voltage of 750 V DC is used mainly in light rail transport. Its power is designed from 1000 to 4000 kW depending on conditions, and the manufacturer's table gives 1000/2000 kW. The ETSR22 for 1500 V DC is intended for metros, where the load requires a higher voltage, and its power of 2000/3000/4000 kW is also selected for the system.
The rectifier is assembled in a free-standing cabinet with doors at the front, rear and side and with space for condensation protection. Cooling is natural, with no fans, so there is nothing in the cabinet to replace because of bearing wear. The circuit is 12-pulse on silicon diodes, load class VI for heavy traction. Snubber circuits on the AC side and RC circuits and varistors on the DC side protect the diodes from overvoltages. Temperature and operating mode are monitored in real time with alarms.
Rated input voltage is 300/1200 V AC for the ETSR21 and 600/1200 V AC for the ETSR22, output 750 and 1500 V DC. Rated output current is 1333/2667 A and 1333/2000/2667 A, power 1000/2000 and 2000/3000/4000 kW, frequency 50/60 Hz. The power frequency test voltage is 2350 and 4140 V. Overload under class VI is 100 % continuously, 150 % for 2 hours and 300 % for 1 minute. Supply is from a rectifier transformer with △/△ or △/△-Y connection, with 6 or 12 pulse output.
Diode current imbalance is less than ±10 %, efficiency at full load is over 99 %, noise is less than 60 dB. Control voltage is 110 V DC, other values are possible. Maximum ambient temperature is 40 °C, degree of protection IP31. Other ratings are made on request. The rectifiers comply with IEC 60146-1-1 and IEC 60146-2. At metro, tram and light metro traction substations they are supplied together with rectifier transformers, ETGR DC switchgear and ETCPU200 relays.
Technical specifications
| Output voltage | 750 V DC (ETSR21) / 1500 V DC (ETSR22) |
|---|---|
| Power | 1000/2000 kW (ETSR21); 2000/3000/4000 kW (ETSR22) |
| Input voltage | 300/1200 and 600/1200 V AC |
| Circuit | 6- or 12-pulse, transformer △/△ or △/△-Y |
| Overload | class VI: 100 % continuous, 150 % 2 h, 300 % 1 min |
| Efficiency | > 99 % |
| Cooling | natural, without fans |
| Noise | < 60 dB |
| Degree of protection | IP31 |
| Standards | IEC 60146-1-1, IEC 60146-2 |
Request a price and lead time
ETSR21 / ETSR22 — traction silicon rectifiers 750/1500 V DC, 1000–4000 kW. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8504 40 84 00 |
|---|---|
| HS, 6 digits | 8504 40 |
| CN (EU) | 8504 40 84 |
| HTSUS (USA) | 8504 40 85 00 |
| China customs tariff | 8504 40 19 90 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What overload capability do the rectifiers have?
Under class VI the rectifier withstands 100 % continuously, 150 % for 2 hours and 300 % for 1 minute.
Which power ratings are available for the ETSR22?
The ETSR22 for 1500 V DC is made for 2000, 3000 and 4000 kW at an output current of 1333, 2000 and 2667 A.
How is the rectifier cooled?
Cooling is natural, without fans. Noise does not exceed 60 dB, degree of protection IP31.
Similar equipment from other manufacturers
