protected by a patent
PSS-PRU Pulse Rectifier, based on pulse power supplies, is designed for the cathodic protection of various underground structures: main pipelines (gas pipelines, oil pipelines, product pipelines, and other pipelines for different purposes), utility infrastructure facilities, storage tanks, and other similar structures located in various types of soil, including highly aggressive soils.
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Description
Pulse Transformer Rectifier IPKZ-RA is the equipment used in the cathodic protection system for underground parts of metal structures. This device converts alternating electric current into direct current and supplies the required potential to the protected elements. IPKZ-RA is one of the most popular transformer rectifier options used in modern cathodic protection systems.
The transformer rectifier is made as a block of equipment consisting of a terminal panel, a control system and power modules - depending on the model, their number can vary from one to four. The unit is located inside a protected metal cabinet mounted on a support rack.
The equipment is manufactured in accordance with the main technical requirements OTT-75-180.00-KTN-016-19 for modular transformer rectifiers (TU 27.11.50-098-73892839-2019), that are included in the Core Products Register of Transneft PJSC.
Functionality
The transformer rectifiers operate in the following modes:
1) automatic maintenance of the total potential at a given level in the range of values from minus 3.5 V to minus 0.5 V;
2) automatic maintenance of the polarization potential at a given level in the range of values from minus 2.0 V to minus 0.5 V;
3) automatic maintenance of protective current (stabilization of the output current);
4) automatic stabilization of the output voltage.
The manufacturer has calibrated the measuring circuits of the transformer control unit. The control unit is used as an indicator of the output parameters and operating modes of the transformer rectifier. To control the correctness of maintaining the set value of the output parameter of the transformer rectifier, it is necessary to use certified external specialized measuring devices of the approved type, which are connected to the corresponding transformer terminals.
The transformer rectifiers have the following versions:
IPKZ-RA-E - modular pulse transformer rectifiers with natural cooling of "Raduga" type modules;
IPKZ-RA-E-R - modular pulse transformer rectifiers with natural cooling of "Raduga" -type modules with 100% redundancy of power modules;
IPKZ-RA-EM - modular pulse transformer rectifiers with natural cooling of modules multichannel of "Raduga" type;
IPKZ-RA-EM-R - modular pulse transformer rectifiers with natural cooling of modules multichannel "Raduga" type with 100% channel redundancy;
Telemetry types:
T1 - connection through the "current loop" communication channel with physical signals (analog (4 - 20 mA) and discrete);
Т2 - connection to the transformer via a serial digital interface RS-485, Modbus RTU protocol;
Т3 – connection through GSM/GPRS communication channel version 1 (basic);
T4 - connection through GSM/GPRS communication channel version 2 (with two SIM cards);
Т5 - connection through GSM/GPRS communication channel version 3;
Т6 – connection to a transformer through radio channel (in the UHF range or others).
The combinations of telemetry types can be implemented in transformers. In this case, the designation should be carried out as follows:
Т13 – combination of types Т1 and Т3
Т25 – combination of types Т2 and Т5
Т124 – combination of types Т1, Т2 and Т4 etc.
When installing, assembling and operating the transformer rectifiers, it is necessary to follow the requirements of the operating manual for the IPKZ-RA-E (M).27.11.50.04RE transformers and IPKZ-RA-E (M) .27.11.50 installation manual.
Specifications
Name of parameters |
IPKZ-RA-E- (R) -8,3/4,2-12/24 |
IPKZ-RA-E- (R) -12,5/6,3-24/48 |
IPKZ-RA-E- (R) -8,3/4,2-12/24 |
IPKZ-RA-E (M) - (R)-25/12,5-24/48 |
IPKZ-RA-E- (R) -20/10-48/96 |
IPKZ-RA-E- (R)-26/13-48/96 |
IPKZ-RA-E (M)-(Р)-42/21-48/96 |
IPKZ-RA-E (M)-(Р)-62/31-48/96 |
IPKZ-RA-Е (М)-(Р)-82/41-48/96 |
IPKZ-RA-E (M)-(Р)-100/50-48/96 |
| 1. Rated output active power of one channel, kW | 0.1 | 0.3 | 0.5 | 0.6 | 1 | 1.25 | 2 | 3 | 4 | 5 |
| 2. Rated output active power of one module, kW | 0.1 | 0.3 | 0.5 | 0.3 | 1 | 1.25 | 1 | 1 | 1 | 1.25 |
| 3. Rated output current, A, not more than | 8.3/4.2 | 12.5/6.3 | 20.8/10.4 | 25/12.5 | 20/10 | 26/13 | 42/21 | 63/31.5 | 82/41 | 100/50 |
| 4. Number of channels, Е / ЕМ, pcs. | 1 | 1 | 1 | 1/2 | 1 | 1 | 1/2 | 1/3 | 1/4 | 1/4 |
| 5. Rated output voltage, V | 12/24 | 24/48 | 24/48 | 24/48 | 48/96 | 48/96 | 48/96 | 48/96 | 48/96 | 48/96 |
| 6. Rated voltage of the supply network, V | 230±10 % | |||||||||
| 7. Rated frequency of the supply network, Hz | 50 ± 1 | |||||||||
| 8. Output current ripple,%, no more | 1 | |||||||||
| 9. Smooth regulation of output parameters by voltage or current from the nominal value,% | from 5 to 100 | |||||||||
| 10. Range of regulation of protective potential unit, V | From minus 0.5 to minus 3.5 | |||||||||
| 11. Deviation of the output current and voltage from the rated value, %, no more than | 2.5 | |||||||||
| 12. Efficiency factor in nominal mode,%, not less | 90 | |||||||||
| 13. Ability to work with load resistance, Ohm, not less than | 0.1 | |||||||||
| 14. Power factor in nominal mode, not less | 0.9 | |||||||||
| 15. Input resistance of the potential measuring device, MOhm, not less than | 10 | |||||||||
| 16. Possibility of 100% redundancy of power modules (channels) | available | |||||||||
| 17. Ensuring the output voltage doubling due to switching outputs at a load current, A, not more than | 0.5 | |||||||||
| 18. Time of automatic recovery of the operating mode after the restoration of the disconnected voltage, sec, no more than | 10 | |||||||||
| 19. Maintaining performance at supply voltage, V | 165 to 253 | |||||||||
| 20. Warranty operating life, years | 5 | |||||||||
| 21. Guaranteed shelf life, year | 3 | |||||||||
| 22. Service life, years | 20 | |||||||||
Additional devices are available at the request of the customer |
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| 23. Generator 100 Hz | against order | |||||||||
| 24. Data logger | against order | |||||||||
| 25. Current interrupter without synchronization | against order | |||||||||
| 26. Current interrupter with GPS synchronization, GLONASS | against order | |||||||||
| 27. Telemetry devices according to clause 1.3 | against order | |||||||||
| 28. Stand-by power unit for telemechanics systems 7 A * h | against order | |||||||||
| 29. Mast house | against order | |||||||||
Modifications
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PSS Corporation. Cathodic protection equipment.
