RECTIFIER V-OPE-TM-1(2) SERIES V

Rectifier V-OPE-TM-1(2) series V Purpose
Rectifiers V-OPE-TM are intended for cathodic protection of underground metal constructions against corrosion.
Features
  • Rectifiers V-OPE-TM-1 and V-OPE-TM-2 have the same schematic modification. The present variant of rectifier ensures its operation:
    - as a self-sufficient product;
    - in systems equipped with telemechanics sets.
    Principle of operation
  • Principle of operation is based on pre-reducing of power line voltage by means of power transformer and rectifying of power line voltage by means of diode-thyristor rectifier. Output voltage is regulated by means of changing of thyristor enablement moment by phase control system.
    Operating conditions
  • Rectifier ensures reliable and stable operation under the following climatic conditions:
    - the upper value of ambient temperature + 45°C;
    - the lower value of ambient temperature - 45°C;
    - the upper value of relative humidity 98% at 25°C.
  • Rectifier V-OPE-TM-1, climatic Y version of distribution category 1, is designed to be mounted outdoors.
  • Rectifier V-OPE-TM-2, climatic Y version of distribution category 2, is designed to be installed in distributing devices for cathodic protection (UKZV, UKZN, MEHZV, MEHZN, MEHZT) and other indoor locations.
    Conventions
    Technical data
    Parameter's name V-OPE-TM-1(2)-20-12-Y1(2) V-OPE-TM-1(2)-25-24-Y1(2) V-OPE-TM-1(2)-42-24-Y1(2) V-OPE-TM-1(2)-42-48-Y1(2) V-OPE-TM-1(2)-63-48-Y1(2) V-OPE-TM-1(2)-100-48-Y1(2)
    1. Rated output current, A 20 25 42 42 63 100
    2. Rated output voltage, V 12 24 24 48 48 48
    3. Rated output active power, kW 0,24 0,6 1,0 2,0 3,0 4,8
    4. Power consumption, kVA, not more than 0,38 0,88 1,47 2,77 4,15 6,27
    5. Efficiency in nominal conditions, %, not less than 75 80 80 85 85 90
    6. Power line voltage, V 220 (+33;-55)
    7. Power line frequency, Hz 50±3; 60±3
    8. Number of phases 1
    9. Power factor in nominal conditions, not less than 0,85
    10. Output voltage pulsation factor, %, not more than 3
    11. Output voltage regulation range, %, not less than 1-100
    12. Weight, kg, not more than 72 72 80 117 177 217
    13. Overall dimensions, mm:  
          V-OPE-TM-1 600x420x825 600x420x1025 600x420x1225
          V-OPE-TM-2 500x400x750 700x380x700
    14. Capacity, dm3  
          V-OPE-TM-1 208 258 309
          V-OPE-TM-2 150 186
    Notes:
    1. Rated output parameters of the rectifier are guaranteed at rated power line voltage and rated load resistance.
    2. Quality of power line energy should correspond to the standard GOST 13109-87.
    Rectifier
  • The rectifier ensures operation in the following modes: - automatic maintenance of compound action or protection potential,
    - stabilization of output current,
    - manual regulation of output voltage,
    - unguided rectifier.
  • The conversion from the local control mode to the remote control mode at the installation place or by the controller on the control board is possible.
  • Pulsation factor of output voltage of the rectifier is not more than 3%
  • The rectifier is designed for operation under load resistance from 0.1 Rnom and up of the rated value determined by the relation of rated output voltage Unom to rated output current Inom.
  • The rectifier operates at output voltage Unom and 2 Unom (by switching of windings on the power transformer and reactor) at load current Inom and 0.5 Inom respectively.
  • The rectifier is able to work at breaking of potential difference metering circuit by transition in output current stabilization mode. Output current level is set by resistor "CURRENT" of the control unit.
  • At the input of the metering circuit the rectifier allows a jamming signal of alternating voltage with frequency of 50 and 100 Hz at up to 10 V of amplitude values.
  • The rectifier has the protection against external and internal short-circuits and voltage overloads.
  • The rectifier is reliably put into operation after short- and long-term disappearances of the power line voltage with automatic turn-on in the latest set operation mode.
  • The rectifier has the device of automatic reclosing (AR) into operation after it has been switched off by the protection system.
  • The rectifier ensures operation at power line voltage becoming as low as 160 V.
  • The rectifier has protection against atmospheric overloads of the power line and load with allowable pulse energy of not more than 40 J at pulse duration 8/20 mcs.
  • Steady-state deviation of measured potential difference at rated power line voltage under normal climatic conditions is not more than 0.5%.
  • Additional steady-state deviation of measured potential difference at a change of 1 V in power line voltage under normal climatic conditions is not more than 0.02%.
  • Additional steady-state deviation of measured potential difference at a change of 1?C in ambient temperature at rated power line voltage is not more than 0.05%.
  • Steady-state deviation of output current in stabilization mode in the range of 10 to 100% Inom under normal climatic conditions is not more than 1.0%.
  • he input resistance of potential difference metering circuit is not less than:
    - 10 Mohm – under normal climatic conditions,
    - 1 Mohm – under the influence of the upper value of relative humidity.
  • Construction of the rectifier ensures continuous operation without maintenance and repair during not less than 6 months.
  • The rectifier provides joint operation with different telemechanics systems.
  • The rectifier corresponds to the standard 01 GOST 12.2.007.0-75 in the way of man protection against current injury.
  • The rectifier corresponds to fire safety requirements according to GOST 12.1.004-91.
  • The level of radio interference produced on the clamps of the power line and load does not exceed that of the standard GOST Р 51318.14.1-99.
  • The level of acoustic pressure produced by the rectifier does not exceed 60 dBA.
  • Specified service life – 20 years.
  • Guaranteed service life – 30 months.
    The rectifier corresponds to the technical specifications IZHSK.435211.002TU, GOST 26830-86, GOST 24682-81, GOST 9.602-89, GOST 25812-83, GOST R 51164-98 and the documentation package according to IZHSK.435211.006 for the modification V-OPE-TM-1 or IZHSK.435211.007 for the modification V-OPE-TM-2. The rectifier also corresponds to the “General technical requirements to cathodic protection transformers”, worked out by VNIIGaz and approved by RAO “Gazprom”.
    The rectifier produced for export additionally meets the requirements RD 1601.007-88.
    Construction
  • The rectifier V-OPE-TM-1 is made according to the block principle. The blocks are allocated in the case of carcassless type. There is a door with two locks at the front panel of the case. Behind this door there is also an inner door.
  • Level of protection of the rectifier is IP 34 according to GOST 14254-80.
  • The rectifier has natural air cooling. In the lower part of the rectifier case there are vent holes, and in the upper part of the rectifier case there is a specially-designed cover that provides hot air output.
  • In the lower part of the rectifier case transformer and reactor are mounted. On the left side of the case there is an input panel fitted with electro technical outputs ХТ1 and ХТ2 intended for connection of the rectifier to the power line and voltage breaker. For electrical safety ensuring the electro technical outputs ХТ1 and ХТ2 are provided with removable cover which can be taken off when the outputs are connected with power line cables
  • On the back side of the case there is a block of condensers.
  • Sensor elements (ferreed contact) are located on the case enclosure and on the outer door. Sensor is used for signal injection in case of unauthorized access into the rectifier.
  • In the middle part of the case on channels there is a disengage unit, a unit of radio noise filter, a plug socket, output panel of clamps with electro technical outputs ХТ3 (+) and ХТ4 (-) for connection of the rectifier load (anodic ground and protected construction) and with clamps ХТ5 (Т), ХТ6 (ES), ХТ7 (DP), to which the protected construction (pipe), the reference electrode and the sensor are connected.
  • In the upper part of the case there is a block of thyristors. On the clamp panel power thyristors, diodes, a shunt and a toggle switch are mounted.
  • On the left side of the case there is an electric energy meter and a plate for connection the rectifier to telemechanics set. On the left side of the case a block of signal transformation is mounted.
  • On the inner door there is a safety cutout plate, block of warning lights, booster of current sensor, potential metering plate, control unit, measuring instrument, two meters of operation time, machinery of government, transformer used for power supply to safety cutout plate and metering potential plate, gang switch.
  • The protection level of the control unit is IP 44. The protection is provided by the application of a rubber gasket in the enclosure cover.
  • In the lower outer part of the case there are two bolts for connection of the rectifier case to the grounding mat.
  • Four holes for lifting and transportation are provided in the upper part of the rectifier case.
  • Construction of the rectifier V-OPE-TM-1 provides its installation on a flat ground and its fastening with four bolts. It is also possible to install the rectifier on vertical wall or concrete pole using supplementary frame.
  • Construction of the rectifier V-OPE-TM-2 provides its installation on distributing devices for cathodic protection and indoors. The rectifier contains the same blocks as used in V-OPE-TM-1-type, but the case has some structural features that are noted in operation manual. Case construction provides mounting of one rectifier onto the other. The rectifier V-OPE-TM-2 is an updated version of the rectifier TDE-9. The rectifier V-OPE-TM-2 can be mounted in the following devices: UKZV, UKZN, MEHZV, MEHZN, MEHZT.
    Overall and installation dimensions of rectifier V-OPE-TM-1
    For V-OPE-TM-1-20-12-Y1 and V-OPE-TM-1-25-24-Y1 H=825 mm.
    For V-OPE-TM-1-42-24-Y1 and V-OPE-TM-1-42-48-Y1 H=1025 mm.
    For V-OPE-TM-1-63-48-Y1 and V-OPE-TM-1-100-48-Y1 H=1225 mm.
    Overall and installation dimensions of rectifier V-OPE-TM-2
    For V-OPE-TM-2-20-12-Y2, V-OPE-TM-2-25-24-Y2, V-OPE-TM-2-42-24-Y2 and V-OPE-TM-2-42-48-Y2 L=500mm. B=400mm. H=750mm.
    For V-OPE-TM-2-63-48-Y2 and V-OPE-TM-2-100-48-Y2 L=700mm. B=380mm. H=700mm.
    Scheme of exterior conjunctions of rectifier
    Scheme of rectifier’s checking in automatic mode
    Rectifier’s type R1, kohm R2, kohm Rnom, ohm
    V-OPE-TM-1(2)-20-12-Y1(2) 3,9 5,1 0,6
    V-OPE-TM-1(2)-25-24-Y1(2) 3,9 15 0,96
    V-OPE-TM-1(2)-42-24-Y1(2) 3,9 15 0,57
    V-OPE-TM-1(2)-42-48-Y1(2) 3,9 33 1,14
    V-OPE-TM-1(2)-63-48-Y1(2) 3,9 33 0,76
    V-OPE-TM-1(2)-100-48-Y1(2) 3,9 33 0,48
    Joint operation of rectifiers V-OPE-TM-1(2) series B1 with telemechanics sets
  • Rectifier V-OPE-TM-1(2) series V ensures joint operation with the below-listed telemechanics sets (TM): “SupeRTU-4”, “UNK-TM”, “STN-3000”, “Magistral-1”, “Magistral-2”, “ELSI-2000”, “SCADA”, PTK “SKAT”, etc.
  • On request, rectifier V-OPE-TM-1(2) series V can be adjusted for joint operation with another TM sets.
  • Joint operation with telemechanics sets offers the following possibilities:
    - remote measurement and changing of output current and output voltage of the rectifier;
    - remote measurement and changing of protective potential;
    - remote switching-off of the working rectifier and its switching-on with rectifier’s automatic returning to the latest operation mode;
    - control of power consumption quantity;
    - give the signal about switching on the rectifier into operation (“ON”), about emergency switching off the rectifier (“EMERGENCY”) and about unauthorized access into the rectifier (for V-OPE-TM-1 only).
    Rectifier V-OPE-TM-1(2) series V contains signal transformation unit IZHSK.656116.019 that ensures galvanic isolation of thermoprobe, rectifier’s control and signalling from electric circuits of telemechanics unit.
    Signal transformation unit ensures production and transmission of standard current signals (4-20) mA to telemechanics sets. The current signals allow measuring of the output parameters values (current and voltage) of the rectifier and protection potential value. The required protection potential is maintained by current signal (4-20) mA coming from telemechanics set to the rectifier.
    Current signals going through measuring channels into telemechanics unit change in the range from 4 to 20 mA pro rata the change of:
    - output current from 0 to 1,05Inom; - output voltage of the rectifier from 0 to 1,04Unom, where 2Unom is doubled value of rated output voltage;
    - protection potential from 0 to -3,5V.
    It is possible to transfer the operation of the rectifier in the local mode to the remote operation mode by a dispatcher. If mode selection switch (“MODE”) on the control unit is set for “AUT”, the protection potential will be maintained, setting for “CURRENT” ensures stabilization of output current.
    The operation of rectifier can be transferred into remote control mode by the toggle switch (“LOCAL/REMOTE”) which is located on the control unit.
    In case of remote control open failure the rectifier that was set into remote control mode from dispatcher console or by toggle switch (“LOCAL/REMOTE”) transfers into local control mode with latest set operation mode.

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