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Diode protection unit «Energomera»
 
Diode protection unit «Energomera» - BDR-M2

BDR-M2

TOR 3415-006-22136119-2004
Simultaneous electrochemical corrosion protection of up to four galvanically isolated underground metal constructions. Functions in conjunction with cathodic protection stations.
 
  Standard compliance
 
  • Compliance with the GOST R 51164-98 "Main steel pipelines. General requirements to corrosion protection".
  Specifications
 
Items Parameter values for BDR-M2 unit types
15/25-1
(T,I,TI,
A,AI)-U1		 5/25-2
(T,I,TI,
A,AI)-U1		 5/25-3
(T,I,TI,
A,AI)-U1		 5/25-4
(T,I,TI,
A,AI)-U1
Number of channels 1 2 3 4
Parameters of one channel:
Nominal mean continuous channel current, A 15
Maximum (peak) channel current (with duration - up to 1 min. within not less than 15 min. of operation), A 25
Total resistance of every channel, Om 0,40±0,04
Electrical resistance of one control step, Om 0,040±0,004
Electrical resistance of resistance contactor, Om 0,020±0,002
Number of control steps, pcs.:
with short circuitor 10
with resistance contactor 10
altogether 20
Tolerable reverse voltage, V 1000
Nominal mean continuous current of the units at parallel connection of channels:
two channels, A   30 30 30
three channels, A     45 45
four channels, A       60
Maximum (peak) current of the units at parallel connection of channels, (with duration - up to1 min. within not less than 15 min. of operation.):
two channels, A   50 50 50
three channels, A     75 75
four channels, A       100
Nominal mean continuous current of the units at series connection of channels, A 15
Maximum (peak) current of the units at series connection of channels, (with duration - up to1 min. within not less than 15 min. of.), A 25
Overall dimensions, mm 500x240x300 500x400x300
Weight, no more that, kg 14 15 20 21
  Notes
  The units tolerate constant maximum current flow at electrical resistance of channels no more than 0,2 Om.
  Design features
 
  • Expanded units' nomenclature.
  • Electrical impedance of the channels is increased up to 0,4 Om.
  • Number of control steps in the channels is increased up to 20.
  • Protection current in each channel is set by one contactor.
  • Possibility of multichannel blocks channels parallel connection for summed nominal and maximum current increment.
  • Possibility of multichannel blocks channels series connection for channels' summed electrical resistance increment.
  • Nonpolarized channels and channels of reverse current conductance can be created.
  • Effective protection against atmospheric (lightning) overvoltage.
  • Different blocks modifications (I, TI, AI) with the building amperemeter for direct measurement of protection currents, running through the channels to the constructions.
  • Possibility of connection to systems of remote control (modifications T, TI) for measurement of:
    • protection currents, running thorough the channels to the constructions;
    • protection potentials on the constructions.
  • Different blocks modifications (A, AI) with the channels of "forward" conduction for the following functions:
    • as a polarized drainage;
    • for connection of multijoint anodic earths and equalization of currents from separate rungs.
  • Variants of blocks installation:
    • on a flat horizontal base;
    • on a flat vertical base;
    • on cathodic protection test stations (KIP)
    • on power transmission towers.
  • Exploitation outdoors and indoors.
  • Steady operation in different climatic zones at wide ambient temperature range - from -45°C up to +45°C
  • Long-life performance - up to 20 years.
  Modifications
 
Model Number of channels Notes
BDR-M2-15/25-1-U1 single-channel  
BDR-M2-15/25-2-U1 two-channel
BDR-M2-15/25-3-U1 three-channel
BDR-M2-15/25-4-U1 four-channel
BDR-M2-15/25-1I-U1 single-channel with the build-in amperemeter for current measurement in each channel
BDR-M2-15/25-2I-U1 two-channel
BDR-M2-15/25-3I-U1 three-channel
BDR-M2-15/25-4I-U1 four-channel
BDR-M2-15/25-1T-U1 single-channel with possibility of connection to systems of remote control
BDR-M2-15/25-2T-U1 two-channel
BDR-M2-15/25-3T-U1 three-channel
BDR-M2-15/25-4T-U1 four-channel
BDR-M2-15/25-1TI-U1 single-channel with the build-in amperemeter for current measurement in each channel and possibility of connection to systems of remote control
BDR-M2-15/25-2TI-U1 two-channel
BDR-M2-15/25-3TI-U1 three-channel
BDR-M2-15/25-4TI-U1 four-channel
BDR-M2-15/25-1A-U1 single-channel with channels of forward conduction
BDR-M2-15/25-2A-U1 two-channel
BDR-M2-15/25-3A-U1 three-channel
BDR-M2-15/25-4A-U1 four-channel
BDR-M2-15/25-1AI-U1 single-channel with channels of forward conduction and build-in amperemeter for current measurement in each channel
BDR-M2-15/25-2AI-U1 two-channel
BDR-M2-15/25-3AI-U1 three-channel
BDR-M2-15/25-4AI-U1 four-channel
  Features modifications
 
# Model Characteristics
1 BDR-M2-15/25-1(T,I,TI)-U1
BDR-M2-15/25-2(T,I,TI)-U1
BDR-M2-15/25-3(T,I,TI)-U1
BDR-M2-15/25-4(T,I,TI)-U1		 The units provide current flow from the "Input" binder to the "Output" binders, at negative voltage supply to the "Input" binder.
2 BDR-M2-15/25-1-U1
BDR-M2-15/25-2-U1
BDR-M2-15/25-3-U1
BDR-M2-15/25-4-U1		 In each channel there are clips measuring channel current by means of external measuring device (millivoltmeter).
3 BDR-M2-15/25-1I-U1
BDR-M2-15/25-2I-U1
BDR-M2-15/25-3I-U1
BDR-M2-15/25-4I-U1		 Measurement in each channel is provided by the build-in amperemeter of 2,5 accuracy class.
4 BDR-M2-15/25-1T-U1
BDR-M2-15/25-2T-U1
BDR-M2-15/25-3T-U1
BDR-M2-15/25-4T-U1		 There are clips for circuits' connection installed in the unit:
-from current sensors (measuring shunts), build into the unit channels;
-from reference potential sensors (reference electrodes);
-from the protected constructions (measuring, nonconducting cables);
-from the system of remote control or from its coupler (controller, signal adapter).
5 BDR-M2-15/25-1TI-U1
BDR-M2-15/25-2TI-U1
BDR-M2-15/25-3TI-U1
BDR-M2-15/25-4TI-U1		 Meet the requirements of 1, 3, 4 clause.
6 BDR-M2-15/25-1A-U1
BDR-M2-15/25-2A-U1
BDR-M2-15/25-3A-U1
BDR-M2-15/25-4A-U1		 The units provide current flow from the "Input" binder to the "Output" binders, at positive voltage supply to the "Input" binder.
7 BDR-M2-15/25-1AI-U1
BDR-M2-15/25-2AI-U1
BDR-M2-15/25-3AI-U1
BDR-M2-15/25-4AI-U1		 Meet the requirements of 3, 6 clause.
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