The Diode Resistor Unit (Modified) BDR (M) — equipment used to combine cathodic protection damage and its propagation to several (up to four) separate underground metal structures.
Modified Diode Resistive Units BDR(M)-10, BDR(M)-25, BDR(M)-50
The Modified Diode Resistive Unit BDR (M) is intended for simultaneous protection of up to 4 unconnected underground metal structures against corrosion and elimination of the harmful effect of protective installations of separate protection on adjacent communication lines. The BDR (M) operates in conjunction with a transformer rectifier and provides cathodic protection of structures by setting a protection current for each of the items, depending on the state of their insulation. The units can be used as a polarized drainage. They meet the requirements of TS 3415-004-73892839-2006, a set of design documentation, GOST R 51164-98.
BDR (M) can also be called Drainage Protection Unit (BDZ), Joint Protection Unit (BSZ).
Scope of application
In any area where a cathodic protection device from one station to several objects at once is economically profitable, the BDR (M) unit can be used. The device effectively protects the structures of the oil and gas industry, chemical, industrial complexes, housing and communal enterprises. Also BDRM (M) is used in the energy industry to insulate power cables.
Versions
- version in a cabinet mounted on the KIP.PSS rack.
Features and Advantages
- Flexible configuration of protection indicators for each of the channels.- Easy device maintenance, low labor costs.
- Using one contactor per channel.
- Using varistors for reliable lightning protection.
- Installation on horizontal and vertical surfaces, on power transmission line supports.
- Resistance to atmospheric agents, the ability to operate outdoors in the temperature range from -45 to +45° C.
- The service life is up to 20 years.
The multichannel units can be connected in parallel circuits to increase the total current indicators or in series to increase the resistance indicators. Using BDR (M) units, it is possible to implement unpolarized channels or channels with reverse current conductivity. Depending on the modification, it is possible to connect telemetry systems and other instrumentation (ammeters, voltmeters).
| Indicator name | BDRM-10-1 | BDRM-10-2 | BDRM-10-3 | BDRM-10-4 |
| Number of independent channels | 1 | 2 | 3 | 4 |
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Rated current of each channel, A, not less than
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6 | |||
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Maximum current of each channel, A, not less than |
10 |
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Resistance of adjusting resistors, Ohm
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0.095 |
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Range of regulation of resistance of each channel, Ohm
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From 0 to 0.3 ± 0.04 |
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| Number of stages of regulation of each channel |
2 |
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| Overall dimensions, no more than, mm | 550×200×220 | 550×250×220 | 550×400×220 | 550×400×220 |
| Weight, kg, no more than | 8 | 10 | 15 | 16 |
| Indicator name | BDRM-25-1 | BDRM-25-2 | BDRM-25-3 | BDRM-25-4 |
| Number of independent channels | 1 | 2 | 3 | 4 |
| Rated current of each channel, A, not less than |
15 |
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| Maximum current of each channel, A, not less than |
25 |
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| Resistance of adjusting resistors, Ohm |
0.08 |
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| Range of regulation of resistance of each channel, Ohm |
0 to 0.24 ± 0.04 |
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| Number of stages of regulation of each channel |
3 |
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| Overall dimensions, no more than, mm | 550×200×220 | 550×250×220 | 550×400×220 | 550×400×220 |
| Weight, kg, no more than | 9 | 11 | 16 | 18 |
| Наименование показателей | БДРМ-50-1 | БДРМ-50-2 | БДРМ-50-3 | БДРМ-50-4 |
| Количество независимых каналов | 1 | 2 | 3 | 4 |
| Количество модулей | 2 | 4 | 6 | 8 |
| Номинальный ток каждого канала, А, не менее |
30 |
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| Максимальный ток каждого канала, А, не менее |
50 |
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| Сопротивление регулировочных резисторов, Ом |
0,05 |
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| Диапазон регулирования сопротивления каждого канала, Ом |
От 0 до 0,12±0,04 |
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| Количество ступеней регулирования каждого канала |
3 |
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| Габаритные размеры, не более, мм | 550×200×220 | 550×250×220 | 550×600×220 | 550×700×220 |
| Масса, кг не более | 11 | 18 | 21 | 22 |
| БДР(М)- | Блок диодно-резисторный модернизированный |
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ХХ- |
Максимальный ток канала, А |
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Х- |
Максимальное число каналов, предусмотренных конструкцией |
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Х |
Количество установленных каналов |
| Х- | Количество каналов с прямой проводимостью |
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ХХ |
Тип исполнения: Т – исполнение блоков с возможностью подключения систем телемеханики И – исполнение блоков со встроенным амперметром ТИ - исполнение блоков с возможностью подключения систем телемеханики и со встроенным амперметром |
| УХЛ 1 |
Климатическое исполнение и категория размещения по ГОСТ 15150-69 |
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PSS Corporation. Cathodic protection equipment.
