Megger Programma Sverker 750 User Manual
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Megger Programma Sverker 750 User Manual

Relay test unit
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SVERKER
750/760
Relay Test Unit
User's manual

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  • Page 1 SVERKER 750/760 Relay Test Unit User's manual...
  • Page 2 User's manual SVERKER 750/760 Relay Test Unit NOTICE OF COPYRIGHT & PROPRIETARY RIGHTS © 2007, Programma Electric AB. All rights reserved. The contents of this manual are the property of Programma Electric AB. No part of this work may be reproduced or transmitted in any form or by any means, except as permitted in written license agreement with Programma Electric AB.

  • Page 3: Table Of Contents

    S V E R K E R 7 5 0 / 7 6 0 Contents 1 Safety regulations ........ 6 4.10 Resistor set and capacitor ..... 24 Sverker 750 ........24 2 Introduction .......... 7 Sverker 760 ........24 2.1 Applications ........7 4.11 Power supply .........
  • Page 4 S V E R K E R 7 5 0 / 7 6 0 6.7 Finding pick-up and drop-out limits overcurrent cut-outs that grant/deny for under (current/voltage/other entity) starting permission ........ 64 relays ............43 Only for SVERKER 750 ....64 6.8 Measuring operating times for over 8 Troubleshooting .........

  • Page 5: Safety Regulations

    S V E R K E R 7 5 0 / 7 6 0 1 Safety regulations IMPORTANT! IMPORTANT! Read and comply with the following For added protection during a lightning instructions. storm, or when the Sverker 750/760 is Always comply with local safety regula- left unattended and unused for long tions.

  • Page 6: Introduction

    S V E R K E R 7 5 0 / 7 6 0 2 Introduction 2.1 Applications Plotting excitation curves Current and voltage transformation ratio tests Sverker 750/760 is intended primarily for testing Burden measurement for relay protection equip- ment relay protection equipment, but it can also be used for many other purposes.

  • Page 7: Design And Construction

    S V E R K E R 7 5 0 / 7 6 0 2.2 Design and construction The current source built into Sverker can provide 0- 10 A, 0-40 A, 0-100 A, 0-250 V AC or 0-300 V DC. Timing and generation (output) can be carried out simultaneously.

  • Page 8: Description

    S V E R K E R 7 5 0 / 7 6 0 3 Description 3.1 General This chapter presents a general description of Sverker and the types of functions it performs. For more detailed descriptions, please see Chapters 4 and 5.

  • Page 9: Current Source

    S V E R K E R 7 5 0 / 7 6 0 3.2 Current source An indicator lamp to the right of the set of resistors is lighted during generation. Generation start-up is synchronized with the mains, thus eliminating The main source built into Sverker can provide 0- inaccuracies in the test results attributable to the 100 A, 0-40 A, 0-10 A, 0-250 V AC or 0-300 V DC,...

  • Page 10: Timer

    S V E R K E R 7 5 0 / 7 6 0 3.3 Timer Measuring an external cycle Before measuring, Sverker must be set to the Since the timer has a start input and a stop input, it ON+TIME state, whereupon the timer will also be can be used to measure external cycles as well as cleared to zero.

  • Page 11: Trip Indicator

    S V E R K E R 7 5 0 / 7 6 0 3.4 Trip indicator 3.5 Display When the stop condition is met, the TRIP indicator Current, voltage and other entities can be shown on is lighted. This lamp indicates tripping of the relay the display.

  • Page 12: Ammeter & Voltmeter

    S V E R K E R 7 5 0 / 7 6 0 3.6 Ammeter & your measurement may give it time to make the change properly. voltmeter When current and/or voltage fluctuate widely, a filter can be engaged to make reading easier. The Sverker is equipped with an ammeter and voltmeter.

  • Page 13: Ac Voltage Source

    S V E R K E R 7 5 0 / 7 6 0 3.7 AC Voltage source 3.8 Auxiliary voltage source Sverker 750 The auxiliary voltage source provides 20-220 V DC (split into two ranges). It is equipped with The AC voltage source provides 0-120 V AC (split overcurrent protection, and it is separate from the into two ranges).

  • Page 14: Make/Break Contact

    S V E R K E R 7 5 0 / 7 6 0 3.9 Make/Break 3.10 Resistor set and contact capacitor There is a make/break contact that is actuated when The resistor set and capacitor can be used to change Sverker 750 is set to the ON+TIME or OFF+TIME the phase angle of the current and voltage.

  • Page 15: Power Supply

    S V E R K E R 7 5 0 / 7 6 0 3.11 Power supply 3.12 Computer interface The power supply is equipped with a miniature circuit breaker. Sverker has a serial port for communication with computers and the Sverker Win software. To be able to use the Sverker 750/760 with the software Sverker Win the Sverker 750/760 must be “unlocked”...

  • Page 16: Control Panel

    S V E R K E R 7 5 0 / 7 6 0 4 Control panel Sverker 750 control panel P r o g r a m m a E l e c t r i c A B Z P - C D 0 1 E R 0 5 A...

  • Page 17: Sverker 760 Control Panel

    S V E R K E R 7 5 0 / 7 6 0 Sverker 760 control panel P r o g r a m m a E l e c t r i c A B Z P - C D 0 1 E R 0 5 A...

  • Page 18: Current Source

    S V E R K E R 7 5 0 / 7 6 0 4.2 Current source Indication What is meant ON+TIME Current source is activated until the object being tested has operated. The time is then displayed, whereupon Sverker returns automatically to the OFF mode.

  • Page 19: Timer

    S V E R K E R 7 5 0 / 7 6 0 4.3 Timer Indication Condition required for timer stop a) Internal. Used when ON+TIME or OFF+TIME is selected. b) When voltage is applied or when a contact is closed. c) When applied voltage vanishes or when a contact is opened.

  • Page 20: Trip Indicator

    S V E R K E R 7 5 0 / 7 6 0 4.4 Trip indicator 4.5 Display TRIP indicator. This indicates that the object 16. Display. being tested has tripped. The fact that tripping occurred indicates that the conditions imposed at the timer’s stop input (item 14) are met.

  • Page 21: Ammeter & Voltmeter

    S V E R K E R 7 5 0 / 7 6 0 4.6 Ammeter & Note! In the setting mode (MODE activated): The CHG (blue text) button opens the voltmeter displayed menu option so that it can be changed.

  • Page 22: Ac Voltage Source

    S V E R K E R 7 5 0 / 7 6 0 4.7 AC Voltage source 4.8 Auxiliary voltage source Sverker 750 27. 20-220 V DC. Separate, independent output for auxiliary voltage (DC) to the object being tested. Can be varied from 20 to 220 V DC using knob (28).

  • Page 23: Make/Break Contact

    S V E R K E R 7 5 0 / 7 6 0 4.9 Make/Break 4.10 Resistor set and contact capacitor Sverker 750 31. Relay contact. Changes state in response to ON+TIME and OFF+TIME. 35. Capacitor, 10 mF, 450 V. 32.

  • Page 24: Power Supply

    S V E R K E R 7 5 0 / 7 6 0 4.11 Power supply 4.12 Other 41. SERIAL. Serial port for communication with computers and the Sverker Win software. 37. Mains voltage ON/OFF. 38. Connector for mains voltage. 42.

  • Page 25: Making Settings On The Display

    S V E R K E R 7 5 0 / 7 6 0 5 Making settings on the display 5.1 Introduction In addition, there is a special memory that contains Programma’s original Sverker settings. These can be recalled whenever you want to use them. The There are a number of ways to make Sverker original settings are kept in the special memory.

  • Page 26: Button Functions

    S V E R K E R 7 5 0 / 7 6 0 5.2 Button functions 5.3 Direction indicator In addition to the menu heading and menu option, a direction indicator appears on the display. It indi- cates the direction(s) in which you can move in the menu or change a numerical value.
  • Page 27 S V E R K E R 7 5 0 / 7 6 0 Injection Max time:99.0 s c) You press the button nine times to step from 99.9 down to 99.0, and then move it one step to the left by pressing the ←...
  • Page 28 S V E R K E R 7 5 0 / 7 6 0 P r o g r a m m a E l e c t r i c A B Z P - C D 0 1 E R 0 5 A...

  • Page 29: The Menu System

    S V E R K E R 7 5 0 / 7 6 0 5.4 The menu system Menu level 1 Menu level 2 options Explanation Test mode Normal Measures time from START to STOP. Trip + pulse time Measures time from START to STOP and also the duration of the trip pulse.
  • Page 30 S V E R K E R 7 5 0 / 7 6 0 Remote control Settings are controlled from Sverker Win.This will be set automatically when Starting Sverker Win. Sverker is controlled from the panel. Language English English language menus, prompts etc. Deutsch German language menus, prompts etc.

  • Page 31: Test Mode

    S V E R K E R 7 5 0 / 7 6 0 5.5 Test mode 5.6 Injection Test mode Injection <Normal> <Maintained> This menu option is used to specify the desired type Here, you select the type of generation. You have of time measurement.

  • Page 32: Ammeter

    S V E R K E R 7 5 0 / 7 6 0 5.7 Ammeter 5.8 Voltmeter Ammeter Voltmeter <AC Amp Auto> <AC Volt Auto> This option is used to make settings for the Sverker This option is used to make settings for the Sverker ammeter.

  • Page 33: W , Va

    S V E R K E R 7 5 0 / 7 6 0 5.9 Ω Ω Ω Ω Ω , ϕ ϕ ϕ ϕ ϕ , W , VA... (Extra measurement) Ω Ω Ω Ω Ω , ϕ ϕ ϕ ϕ ϕ , W, VA. . . R Ω) <None>...

  • Page 34: Timer

    S V E R K E R 7 5 0 / 7 6 0 5.10 Timer 5.11 Display Timer Display <Unit: Seconds > <Slow> Here you select the unit in which the time displayed If the values shown on the display become unstable in the window by the timer is expressed.

  • Page 35: Off Delay

    S V E R K E R 7 5 0 / 7 6 0 5.12 Off delay 5.13 0-Level filter Off delay 0-Level filter <004 Cycles> <1=Min, 9=Max> This is used to set the time, expressed in mains- To avoid measuring noise that can be encountered frequency cycles throughout which generation is to during testing, Sverker features a well-defined lower continue after tripping occurs.

  • Page 36: Save/Recall

    S V E R K E R 7 5 0 / 7 6 0 5.14 Save/Recall 5.15 Remote control Save/Recall Remote control <Settings> <OFF> The settings made under the headings/options Together with the PC software SVERKER Win you discussed above can be saved in a memory where can control the settings (except the dials) from the they will remain even after Sverker has been turned computer.

  • Page 37: Language

    S V E R K E R 7 5 0 / 7 6 0 5.16 Language 5.17 SW Language R04D <English> Here, you select one of five languages in which the This enables you to display the software version and menus, prompts etc.

  • Page 38: How To Operate Sverker

    S V E R K E R 7 5 0 / 7 6 0 6 How to operate Sverker 6.1 General 6.2 Injecting current – General rules This chapter presents the steps you should take to perform typical Sverker testing operations effi- ciently.

  • Page 39: Selecting The Correct Current Output40

    S V E R K E R 7 5 0 / 7 6 0 6.3 Selecting the 6.4 Measuring current correct current output Select the output at which the setting knob must be turned the furthest to obtain the desired current. This will improve setting accuracy and enable Sverker to deliver maximum power.

  • Page 40: Setting The Desired Current

    S V E R K E R 7 5 0 / 7 6 0 6.5 Setting the Sverker capacitor (only Sverker 750), al-though this will change the phase angle of the current. desired current Sometimes it is advantageous to use the 0-100 A output when you want low currents since it has the 1.

  • Page 41: Finding Pick-Up And Drop-Out Limits

    S V E R K E R 7 5 0 / 7 6 0 6.6 Finding pick-up 5. Activate ON using the start switch. 6. Turn up the current until pick-up. and drop-out limits for 7. The tripping limit will be frozen and held on the display.

  • Page 42: Relays

    S V E R K E R 7 5 0 / 7 6 0 6.7 Finding pick-up reduce the current by turning the main knob until resetting takes place. Release and drop-out limits for the start switch and make a note of the current.

  • Page 43: (Current/Voltage/Other Entity) Relays

    S V E R K E R 7 5 0 / 7 6 0 6.8 Measuring Activate ON briefly using the start switch and read the current from the ammeter. operating times for Repeat until the desired current has been set.

  • Page 44: (Current/Voltage/Other Entity) Relays

    S V E R K E R 7 5 0 / 7 6 0 6.9 Measuring 6.10 Measuring operating times for voltage under (current/ voltage/other entity) 1. Set the voltmeter to measure AC or DC (see Chapter 6). relays 2. Connect the voltmeter input to the voltage that is to be measured.

  • Page 45: Obtaining The Correct Phase Angle When Two Or More Ac Outputs Are Being Used

    S V E R K E R 7 5 0 / 7 6 0 6.11 Obtaining the 6.12 Generating correct phase angle higher voltages when two or more AC Since the AC voltages sent out from Sverker are separated from each other and from the mains, outputs are being series connections can be made.

  • Page 46: Setting An Auxiliary Voltage

    S V E R K E R 7 5 0 / 7 6 0 6.13 Setting an 6.14 Testing voltage auxiliary voltage relays – both pre-fault and fault voltages Only for SVERKER 750 Note! This connection will damage a SVERKER 760. 1.

  • Page 47: Changing The Current And Voltage Phase Difference

    S V E R K E R 7 5 0 / 7 6 0 6.15 Changing the 5. Connect together the terminals marked with black dots on the 0-250 V output and current and voltage on the AC voltage source. From this junc- tion, make a connection to one side of the phase difference relay’s voltage input.

  • Page 48: Measuring The Phase Angle

    S V E R K E R 7 5 0 / 7 6 0 6.16 Measuring the Example: Phase shift at an inductive load (current lags voltage). Current selected as reference. a) Current generated by Sverker (ammeter connected phase angle internally).

  • Page 49: Measuring External Cycle Time (Measurement Not Initiated By Sverker)

    S V E R K E R 7 5 0 / 7 6 0 6.17 Measuring 6.18 Measuring Z, P, external cycle time R, X, VA, VAR and COS ϕ ϕ ϕ ϕ ϕ (measurement not initiated by Sverker) Sverker can be used to measure these entities, even in external circuits.

  • Page 50: Plotting A Magnetization Curve

    S V E R K E R 7 5 0 / 7 6 0 6.19 Plotting a 7. Turn the knob clockwise and read the current and voltage for different points on magnetization curve the curve. 8. When the knee of the curve is reached, slowly lower the voltage and set the start switch to OFF.

  • Page 51: Testing An Automatic Recloser

    S V E R K E R 7 5 0 / 7 6 0 6.20 Testing an Sverker make/break contact (perhaps in series with the voltage source) to the automatic recloser automatic recloser. 3. Use the button marked A to transfer the ammeter test point to the output that is being used.

  • Page 52: Measuring The Trip Pulse Length

    S V E R K E R 7 5 0 / 7 6 0 6.21 Measuring the 6.22 Injecting current trip pulse length – External start 1. Initial settings: OFF. TRIP+PULSE TIME, You can start generation by sending an external signal to Sverker.

  • Page 53: Application Examples

    S V E R K E R 7 5 0 / 7 6 0 7 Application examples 7.1 Testing voltage 4. If the display window is to freeze the voltage reading at the instant of operation, relays check to see that the HOLD function is active (it can be activated by means of the HOLD button).

  • Page 54: Testing Over-Current Relays

    S V E R K E R 7 5 0 / 7 6 0 7.2 Testing over- 6. Read the U > ON + TIME DELAY value from the Sverker display window. current relays 7. Repeat the U > ON + TIME DELAY run two or three times to confirm its accuracy through repetition.
  • Page 55 S V E R K E R 7 5 0 / 7 6 0 Operating function: I > ON + TIME current circuit in series. Moreover, resis- tors can be connected into the Sverker Rx/ DELAY Cx terminal. 1. Turn on the Sverker current source by 2.

  • Page 56: Testing Directional Over-Current Relay

    S V E R K E R 7 5 0 / 7 6 0 7.3 Testing directional 7. If the freeze function has been activated, press the HOLD button twice to unfreeze over-current relay the value shown. 8. Decrease the current until drop-out occurs systems or directional (I>>...

  • Page 57: Sverker 750

    S V E R K E R 7 5 0 / 7 6 0 (the resistor you select will depend on the Testing the operation time testing current) to the current input (NI) to 16. Increase the current to 1.5 times the pick- the protective relay equipment.
  • Page 58 S V E R K E R 7 5 0 / 7 6 0 (the resistor you select will depend on the 6. Decrease the current until drop-out occurs testing current) to the current input (NI) to (I > OFF), whereupon the TRIP indicator will the protective relay equipment.

  • Page 59: Testing Power Relays

    S V E R K E R 7 5 0 / 7 6 0 7.4 Testing power 6. If the freeze function has been activated, press the HOLD button twice to unfreeze relays the value shown. 7. Decrease the voltage until drop-out takes place (U>...
  • Page 60 S V E R K E R 7 5 0 / 7 6 0 The following functions are to be tested: with the A button located to the right of the display window. When a test point is • Pick-up function: P > ON or Q > ON selected, its indicator lamp lights.

  • Page 61: Testing Under- Voltage Relays

    S V E R K E R 7 5 0 / 7 6 0 7.5 Testing under- 7. Repeat the U > ON + TIME DELAY run two or three times to confirm its accuracy through voltage relays repetition. 8. Decrease the current to 0. The following functions are to be tested: Finishing the test •...
  • Page 62 S V E R K E R 7 5 0 / 7 6 0 4. If the display window is to freeze the voltage 6. Repeat the U < ON + TIME DELAY run two or reading at trip/signal time, check to see three times to confirm its accuracy through that the HOLD function is active (it can be repetition.

  • Page 63: Testing Motor Overload Releases And

    S V E R K E R 7 5 0 / 7 6 0 7.6 Testing motor selected. The fault current is set in the usual way with the main knob. The test is started by pressing overload releases and ON+TIME, whereupon the normal-operation current changes to fault current and time measure- overcurrent cut-outs...

  • Page 64: Troubleshooting

    S V E R K E R 7 5 0 / 7 6 0 8 Troubleshooting 8.1 General 8.2 Displayed values r i c r i c y l r . n i s ’ r i c r i c .

  • Page 65: Error Messages Etc

    S V E R K E R 7 5 0 / 7 6 0 8.3 Error messages etc. . F . o l f c t i , y r l l e . l u c i t . y l ) e l i t c v i t...

  • Page 66: Specifications

    S V E R K E R 7 5 0 / 7 6 0 9 Specifications 9.1 General The voltage outputs of the current source The following specifications are for an ambient temperature of +25°C (+77°F) and nominal input o l - l l u o l - l l u...

  • Page 67: Inputs

    S V E R K E R 7 5 0 / 7 6 0 9.3 Inputs Auxiliary DC voltage output Timer inputs These inputs are equipped with 400 V transient voltage suppressors (transils) at three locations: • Between the input contacts. •...

  • Page 68: Make/Break Contact

    S V E R K E R 7 5 0 / 7 6 0 9.4 Make/Break Maximum values contact The make/break contact is equipped with a 1 A miniature circuit breaker Make/break contact 400 V transient voltage sup- pressors (transils) are provided at three locations: •...

  • Page 69: Measurement Section

    S V E R K E R 7 5 0 / 7 6 0 9.5 Measurement Specifications for current in amperes section Timer Time can be displayed in seconds or in mains- ± frequency cycles. ± Specifications for the time expressed in seconds ±...
  • Page 70 S V E R K E R 7 5 0 / 7 6 0 Specifications for voltage displayed in volts The following items can be measured for AC: • cos ϕ • ϕ in (°) with current as reference (Iref) •...

  • Page 71: Other

    S V E R K E R 7 5 0 / 7 6 0 9.6 Other Set of resistors Injection Ω Maintained 1 Ω Injection continues without any time limitation. 2 Ω Ω Momentary Ω Injection continues only as long as be button is kept depressed.

  • Page 72: Maintenance

    S V E R K E R 7 5 0 / 7 6 0 10 Maintenance 10.1 Changing the position of the switch for mains frecuency (Sverker 760) 1. Disconnect Sverker 760 from the mains. 2. Remove the 8 screws on the bottom of Sverker 760.

  • Page 73: Index

    S V E R K E R 7 5 0 / 7 6 0 Index Symbols Low currents ............41 0-Level filter ............36 Magnetization curve ........... 51 Maintenance............73 AC Voltage source ........14, 23 Make/Break contact ........15, 24 Ammeter .............
  • Page 74 S V E R K E R 7 5 0 / 7 6 0 Testing motor overload releases ....... 64 Testing over-current relays ......... 55 Testing power relays ........... 60 Testing under- voltage relays ......62 Testing voltage relays ......... 54 Timer ............
  • Page 75 S V E R K E R 7 5 0 / 7 6 0 P r o g r a m m a E l e c t r i c A B Z P - C D 0 1 E R 0 5 A...
  • Page 76 Subject to change without notice. Printed matter ZP-CD01E R05B 2007...

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