Vanguard WRM-40 User Manual

WRM-10P and WRM-40TRANSFORMER WINDING RESISTANCE METERS USER’S MANUAL Vanguard Instruments Company, Inc.1520 S. Hellman Ave. Ontario, Ca

WRM-10P AND WRM-40 USER’S MANUAL REV 3 6 1.3 WRM Controls and Indicators The WRM-10P and WRM-40’s controls and indicators are shown in Figure 1 and F

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 7 Table 3. Functional Descriptions of WRM-10P Controls and Indicators Item Number Panel Markings Functi

WRM-10P AND WRM-40 USER’S MANUAL REV 3 8 Figure 2. WRM-40 Controls and Indicators

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 9 Table 4. Functional Descriptions of WRM-40 Controls and Indicators Item Number Panel Markings Functio

WRM-10P AND WRM-40 USER’S MANUAL REV 3 10 2.0 PRE-TEST SETUP 2.1 Operating Voltages The WRM’s operating voltage is preset at the factory and is select

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 11 Figure 5. WRM-10P Relay Location Figure 6. WRM-40 Relay Location

WRM-10P AND WRM-40 USER’S MANUAL REV 3 12 2.2 LCD Screen Contrast Control To increase the LCD screen contrast, press and hold the [PAPER ∧ Contrast]

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 13 2.5 Replacing the Thermal Printer Paper The roll of thermal paper is housed inside a dispenser under

WRM-10P AND WRM-40 USER’S MANUAL REV 3 14 3.0 OPERATING PROCEDURES 3.1 WRM Cable Connections Typical WRM connection diagrams are shown in Figure 7, F

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 15 Figure 9. Typical WRM Connections Diagram #3 NOTE The above figure illustrates the simultaneous tes

WRM-10P AND WRM-40 USER’S MANUAL REV 3 i SAFETY SUMMARY NOTICE This manual applies to both the WRM-10P and WRM-40 transformer winding resistance meter

WRM-10P AND WRM-40 USER’S MANUAL REV 3 16 3.2 General Procedures The main steps for using the WRM are outlined below: a. Ground the WRM to the substa

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 17 3.3 Entering Test Record Header Information You can enter the test record header information before

WRM-10P AND WRM-40 USER’S MANUAL REV 3 18 e. The following screen will be displayed: Type the circuit information using the alpha-numeric keypad and

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 19 j. The following screen will be displayed: Type the operator’s name using the alpha-numeric keypad

WRM-10P AND WRM-40 USER’S MANUAL REV 3 20 3.4 Performing a Resistance Test a. Start from the “START-UP” menu: Press the [1] key (TEST XFMR). b. Th

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 21 Press the [1] key (COPPER, Tk=234.5) to select copper as the winding material. Continue to step d. Pr

WRM-10P AND WRM-40 USER’S MANUAL REV 3 22 NOTE The WRM will calculate the equivalent resistance value at this new temperature. Please see section 4.2

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 23 j. The WRM determines when the resistance reading is stable and displays the resistance values on t

WRM-10P AND WRM-40 USER’S MANUAL REV 3 24 k. The following screen will be displayed: 1. YES Press the [1] key (YES) to print the test results on th

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 25 In either case, press any key and continue to step m. 2. NO If you do not wish to save the reading,

REV 3 WRM-10P AND WRM-40 USER’S MANUAL ii TABLE OF CONTENTS CONVENTIONS USED IN THIS DOCUMENT ...

WRM-10P AND WRM-40 USER’S MANUAL REV 3 26 o. The following screen will be displayed: NOTE The record number is automatically assigned and increment

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 27 Figure 12. Typical V1 and V2 Test Report Printout Measured Resistance Equivalent Resistance at Refer

WRM-10P AND WRM-40 USER’S MANUAL REV 3 28 Figure 13. Typical V1 and V2 Test Report Printout with Multiple Readings

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 29 3.5 Performing a Load Tap Changer / Voltage Regulator Resistance Test The Load Tap Changer/Voltage R

WRM-10P AND WRM-40 USER’S MANUAL REV 3 30 e. The following screen will be displayed: If the tap information is correct, press the [1] key (YES) and

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 31 g. The following screen will be displayed: Use the [PAPER ∧ Contrast] and [PAPER ∨ Contrast] keys t

WRM-10P AND WRM-40 USER’S MANUAL REV 3 32 k. The following screen will be displayed momentarily: After the WRM finishes its internal calibration, th

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 33 o. The following screen will be displayed after the last “Raise” position’s resistance reading is st

WRM-10P AND WRM-40 USER’S MANUAL REV 3 34 Press the [2] key (SAVE RECORD) to save the test record. The following screen will be displayed: Press any

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 35 Figure 14. Typical LTC/Voltage Regulator Test Report Printout

WRM-10P AND WRM-40 USER’S MANUAL REV 3 iii LIST OF FIGURES Figure 1. WRM-10P Controls and Indicators ...

WRM-10P AND WRM-40 USER’S MANUAL REV 3 36 3.6 Performing a Special Resistance Test The Special Resistance Test is used to conduct a resistance test f

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 37 Press the [1] key (COPPER, Tk=234.5) to select copper as the winding material. Continue to step d. Pr

WRM-10P AND WRM-40 USER’S MANUAL REV 3 38 g. The following warning screen will be displayed: This warning is a reminder that the next sequence of te

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 39 When the pre-defined test time has elapsed, the following screen will be displayed: Press any key to

WRM-10P AND WRM-40 USER’S MANUAL REV 3 40 Figure 15. Typical Five Minute Special Test Report Printout

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 41 3.7 Performing a Transient Test The transient test verifies that a regulating switch in a Voltage Re

WRM-10P AND WRM-40 USER’S MANUAL REV 3 42 e. The following screen will be displayed: Press the [START] key. f. The following screen will be display

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 43 Press the [1] key (YES) to print the test results. The test results will be printed, and you will be

WRM-10P AND WRM-40 USER’S MANUAL REV 3 44 3.8 Performing a Diagnostic Test In diagnostic mode, the WRM can run a resistance test, display the sense v

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 45 3.9 Working with Test Records 3.9.1. Restoring a Test Record for Review or Printing Use the steps b

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 1 CONVENTIONS USED IN THIS DOCUMENT This document uses the following conventions: • Both the WRM-10P an

WRM-10P AND WRM-40 USER’S MANUAL REV 3 46 The following screen will be displayed: Press any key. Continue to step e. 2. SCROLL TO SELECT Press the [

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 47 e. The following screen will be displayed: 1. SCROLL TEST RECORD Press the [1] key (SCROLL TEST RE

WRM-10P AND WRM-40 USER’S MANUAL REV 3 48 3.9.2. Reviewing or Printing a Restored Test Record Once you have restored a test record to the working mem

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 49 3.9.3. Printing a Test Record Directory A directory of all the test records stored in the WRM’s Flash

WRM-10P AND WRM-40 USER’S MANUAL REV 3 50 Figure 17. Typical Test Record Directory Printout

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 51 3.9.4. Erasing Test Records Follow the steps below to erase a single test record or the entire direc

WRM-10P AND WRM-40 USER’S MANUAL REV 3 52 Type the record number that you would like to erase, and then press the [ENTER] key. The following screen wi

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 53 3.10 Enabling the Computer Interface The Computer Interface Mode is used to transfer test records fr

WRM-10P AND WRM-40 USER’S MANUAL REV 3 54 3.11 Setting the Date and Time To set the date and time: a. Start from the “START-UP” menu: Press the [2]

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 55 4.0 WRM-10P/40 SPECIAL FEATURES 4.1 Bypassing Resistance Reading Delay When the WRM first applies th

WRM-10P AND WRM-40 USER’S MANUAL REV 3 2 1.0 INTRODUCTION 1.1 General Description and Features The WRM-10P is designed to accurately measure the wind

WRM-10P AND WRM-40 USER’S MANUAL REV 3 56 4.2 Converting Resistance Measurements The WRM can convert the resistance reading of the device under test

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 57 5.0 Troubleshooting Guide PROBLEM DESCRIPTION Probable Cause Suggested Solution No current displaye

1520 S. Hellman Ave • Ontario, CA 91761 • USA Phone: 909-923-9390 • Fax: 909-923-9391 www.vanguard-instruments.com C

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 3 Internal Test Record Storage The WRM can store 63 test records (up to 48 readings per test record) in

WRM-10P AND WRM-40 USER’S MANUAL REV 3 4 1.2 Technical Specifications 1.2.1. WRM-10P Technical Specifications Table 1. WRM-10P Technical Specification

REV 3 WRM-10P AND WRM-40 USER’S MANUAL 5 1.2.2. WRM-40 Technical Specifications Table 2. WRM-40 Technical Specifications TYPE Portable transf