RECTIFIER V-OPE-3

V-OPE-3 Purpose
Rectifiers V-OPE-3 is intended for cathodic protection of underground metal constructions against corrosion.
Features
  • The present variant of rectifier ensures its operation: - as a self-sufficient product;
    - in systems equipped with telemechanics units ensuring operation with potential signals produced by the rectifier that have galvanic isolation from these signals. For example, telemechanics unit “UNK-TM”.
    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-3, climatic Y version of distribution category 1, is designed to be mounted outdoors.
  • Rectifier V-OPE-3 can 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-3-25-24-Y1 V-OPE-3-42-24-Y1 V-OPE-3-42-48-Y1 V-OPE-3-63-48-Y1
    1. Rated output current, A 25 42 42 63
    2. Rated output voltage, V 24 24 48 48
    3. Rated output active power, kW 0,6 1,0 2,0 3,0
    4. Power consumption, kVA, not more than 0,94 1,53 2,94 4,25
    5. Efficiency in nominal conditions, %, not less than 75 77 80 83
    6. Power line voltage, V 220 (+33;-55)
    7. Power line frequency, Hz 50±2
    8. Number of phases 1
    9. Power factor in nominal conditions, not less than 0,85
    10. Output voltage pulsation factor, %, not more than 30
    11. Output voltage regulation range, %, not less than 1-100
    12. Weight, kg, not more than 80 90 100 120
    13. Overall dimensions, mm 600õ420õ850
    14. Capacity, dm3 214
    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 30%
  • 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. In this case the rectifier operates at highest output current.
  • 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 into the latest set operation mode.
  • 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 output current in stabilization mode in the range of 10 to 100% Inom under normal climatic conditions is not more than 1.0%.
    - The input resistance of potential difference metering circuit is not less than 15 Mohm.
  • Construction of the rectifier ensures continuous operation without maintenance and repair during not less than 6 months.
  • 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 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 9602-89, GOST 25812-83 and the documentation package according to IZHSK.435211.0055.
    Construction
  • The rectifier V-OPE-3 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 14254-96.
  • 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 ÕÒ1 and ÕÒ2 intended for connection of the rectifier to the power line and electro technical outputs ÕÒ3(+) and ÕÒ4(-) intended for connection of the rectifier load. For electrical safety ensuring the electro technical outputs ÕÒ1 and ÕÒ2 are provided with removable cover which can be taken off when the outputs are connected with power line cables.
  • Above the output clamps there is an automatic breaker intended for switching on/ switching off the rectifier.
  • In the upper part of the case there is an electric energy meter, a unit of radio noise filter, a block of thyristors. On the panel of thyristors block there are: power thyristors, diodes, a shunt, a toggle switch and a plate of damping chains.
  • On the inner door there is a control unit, measuring instrument, a meter of operation time, machinery of government, transformer used for power supply to control plate.
  • 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 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.
  • Cables supply is carried out from the bottom. Branch pipe compression shall be done with polyurethane foam.
  • Construction of terminal clamps provides connection of terminated wires and cables as well as cables without termination. Overall and installation dimensions of rectifier V-OPE-3

    For V-OPE-3-25-24-Y1, V-OPE-3-42-24-Y1, V-OPE-3-42-48-Y1, V-OPE-3-63-48-Y1 H=850, mm
    Scheme of exterior conjunctions of rectifier

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