Megger OCR15D User Manual
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Megger OCR15D User Manual

Megger OCR15D User Manual

Automatic circuit recloser test sets
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User Manual
Model OCR15D
and
Model OCR50D
AUTOMATIC CIRCUIT RECLOSER
TEST SETS
It is essential that this instruction book be read thoroughly before putting the equipment in service.
1
Part Number 86826
Rev 1 Date 11/6/2019

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Summary of Contents for Megger OCR15D

  • Page 1 User Manual Model OCR15D Model OCR50D AUTOMATIC CIRCUIT RECLOSER TEST SETS It is essential that this instruction book be read thoroughly before putting the equipment in service. Part Number 86826 Rev 1 Date 11/6/2019...
  • Page 2 Revision History Revision ECN # Date 33728 6 Nov 2019 Part Number 86826 Rev 1 Date 11/6/2019...
  • Page 3 Megger. Megger, the Megger logo are trademarks of Megger. All other trademarks are the property of their respective owners.
  • Page 4 Caution (refer to accompanying documents) WARNING: Under no circumstances should the operator or technician attempt to open or service any Megger instrument while connected to a power source. Lethal voltages are present and may cause serious injury or death! Part Number 86826...
  • Page 5 The purpose of this equipment is limited to use as described in this instruction manual. Should a situation arise that is not covered in the general or specific safety precaution please contact Megger regional representative or Megger, Dallas Texas. Safety is the responsibility of the user. Misuse of this equipment can be extremely dangerous.
  • Page 6 To the extent this program contains ideas, Megger intends to protect and enforce it rights under state law. To the extent the program is deemed to constitute a form of expression of an idea, Megger intends to protect and enforce its rights under the Copyright Act of 1976. The Statutory Copyright notice has been affixed hereto in the event that it is later determined that the program has been published within the meaning of the Copyright Act of 1976.

  • Page 7: Table Of Contents

    TABLE OF CONTENTS General Description Safety Precautions III. Input Circuit IV. Output Circuit Description of Controls VI. Test Procedures A. Series Type Reclosers 1. Minimum Pick-up Test 2. Timing Test B. Testing Vacuum Type Reclosers C. Reclosers Requiring Line Voltage for Closing D.

  • Page 8: General Description

    GENERAL DESCRIPTION The Megger Model OCR15D and OCR50D are high current primary injection test sets designed for testing automatic oil and vacuum circuit reclosers and other current actuated devices. These units incorporate a variable high current ac output with an impedance matching network to stabilize the output current.

  • Page 9: Input Circuit

    480 volt single-phase input service. OCR15D The Megger OCR15D (15 kVA continuous) is designed to operate from any of several input voltages in order to accommodate the various voltages encountered by users in the field. It is necessary to change the input terminal connections to match the available input voltage.
  • Page 10 1. Determine the rated input current from the nameplate on the test set. Be sure to choose the correct current for the input voltage being used. 2. Multiply this value by four. 3. Determine the length of input lead required. This is in circuit-feet, therefore it is the one-way distance from the test set to the power source.
  • Page 11 SELECTOR CHART FOR INPUT LEADS LENGTH OF INPUT LEADS DISTANCE FROM TEST SET TO POWER SOURCE FOUR TIMES (4X) RATED INPUT POWER 100 120 140 FEET MINIMUM WIRE SIZE A. W. G. THE WIRE SIZES IN THIS CHART WILL RESULT IN VOLTAGE DROPS OF 10 VOLTS OR LESS.

  • Page 12: Output Circuit

    IV. OUTPUT CIRCUIT SELECTION OF OUTPUT TERMINAL Several output terminals at various voltage and current ratings are provided to adapt the OCR Test Set to a wide variety of test circuit impedances. The current ratings shown on the output taps are the continuous duty ratings. The test set works at peak efficiency when the outputs are used at 2 to 3 times their continuous rating.
  • Page 13 Upon operation of the test set, in the momentary position, if the test current indicated is too low, switch the LOAD COMPENSATOR Switch to position 11 and repeat the procedure. Switching to position 11 decreased the matching impedance and therefore allows more output test current. If the test current is too high, switch the impedance tap selector switch to position 9 to increase the matching impedance, thus reducing the output test current and repeat the procedure.

  • Page 14: Description Of Controls

    This section of the instruction manual describes the function of the various controls located on the Megger Model OCR50D. The OCR15D is similar (no indicator lamps or switch on the left side of the front panel). The majority of controls are located on the touch sensitive control panel.
  • Page 15 The external connections are located to the left of the touch panel. The USB connectors provide the ability to: attach a USB thumb drive (for exporting test reports or updating firmware/software), attach an external mouse or to attach a USB keyboard. The USB “B”...
  • Page 16 OCR Main Screen Below is the OCR main test screen. The menu icons are shown across the top of the screen. Figure 2 – OCR Main Screen The menu icons (across the top of the screen): Connection Indicator – indicates the connection status of the controller Configuration Screen –...
  • Page 17 View Test Report – view the present test report Add Test to Report – add the current test data and open the test report File Operations – controls for saving/opening/deleting files Nameplate Information – allows entry of pertinent nameplate information Timer Setup –...
  • Page 18 RMS Measurement Mode - allows selection of RMS measurement modes The 120 Cycle RMS mode will use up to 120 cycles of data to determine the RMS measurement. The 4 Cycle RMS mode will utilize the last 4 cycles of data for calculations.
  • Page 19 Adjust Screen Brightness - Allows the user to adjust screen brightness using the black control knob to the right of the touch screen: Logging - controls for enabling, clearing and copying the system log files (to a USB stick): “Enable logging” activates the software logging function. “Clear log files”...
  • Page 20 Restore Defaults – Restores parameters to factory settings: Update Software – Allows for PowerDB software or OCR Firmware updates and adding curve library updates: Select Language – Allows for language selection Part Number 86826 Rev 1 Date 11/6/2019...
  • Page 21 Set Date & Time - Allows the user to set date and time: Clear Test Results This menu allows the user to clear test results: Part Number 86826 Rev 1 Date 11/6/2019...
  • Page 22 Scale Selection This menu allows the user to select the full-scale metering range. Default selection is the 200A range. Part Number 86826 Rev 1 Date 11/6/2019...
  • Page 23 View Test Report This menu allows the user to review the present Test Report. Press the green check button when finished. Add to Test Report This menu allows the user to add the present Test data to the Test Report. The current test results will be added and the Test Report and displayed.
  • Page 24 File Operations This set of controls allows the user to open a new form, Open an existing record, Save the current form, open the Configuration screen or return to the main screen. Open a new form Open an existing record Save the current form Return to main screen Open the Configuration Screen...
  • Page 25 Nameplate Information Note that items shown in blue may be toggled for the selection of alternate units. Part Number 86826 Rev 1 Date 11/6/2019...
  • Page 26 The “RECLOSER” button may be pressed to access the “SECTIONALIZER” test. The “SECTIONALIZER” selection allows access to a pre-programmed test for sectionalizer testing. The data needed for this testing is the “Number of Shots”, the “On Time” and the “Off Time”. This function will apply the manually selected current to a sectionalizer for the specified On/Off times and monitor the sectionalizer to determine if it opens after the specified number of applied shots.
  • Page 27 Timer Setup Timer follows current flow. Timer starts/stops with current flow. Timer follows a normally open contact (contact closure stops the timer. Timer follows a normally closed contact (contact opening stops the timer). Close the Timer setup. Part Number 86826 Rev 1 Date 11/6/2019...
  • Page 28 Test Selection This menu allows the user to select one of the configured tests for the OCR. Online Help This menu provides access to the Quick Start Help or Full Help. Part Number 86826 Rev 1 Date 11/6/2019...

  • Page 29: Test Procedures

    VI. TEST PROCEDURES SERIES TYPE RECLOSERS MINIMUM PICK-UP TEST 1. Connect output of test set to OCR under test. To save time, select an output tap which coincides with the desired test current used in the TIMING TEST (see SELECTION OF OUTPUT TERMINAL on page 5). 2.

  • Page 30: Timing Test

    TIMING TEST 1. Determine test current to be applied to OCR under test. This is usually 4 to 6 times coil rating. (Example: 35A coil tested at 4 times would require 140 amps.) 2. Select appropriate ammeter range. 3. Use LOAD COMPENSATOR Switch to adjust impedance network. (See Selection of Matching Impedance page 13.) 4.
  • Page 31 TEST FAILED WITH TOO MANY TRIPS This indicates that the OCR under test has operated more than the programmed number of operations. TEST FAILED WITH TOO FEW TRIPS This indicates that the OCR under test has operated less than the programmed number of operations.

  • Page 32: Testing Vacuum Type Reclosers

    TESTING VACUUM TYPE RECLOSERS Most vacuum reclosers test the same as a series type oil circuit reclosers. The same test procedure may be used to test vacuum reclosers. It must be noted that the contacts used in vacuum reclosers tend to bounce, which can cause timing errors and may also be interpreted by the microprocessor as an excess shot.
  • Page 33 SECTIONALIZER TESTING Sectionalizers are not typically intended to be fault current interrupting devices. They are devices that count the interruption of current on a monitored line and will operate after they have detected a pre-set number of trips (shots) within prescribed times.

This manual is also suitable for:

Ocr50d

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