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Siemens 7SR224 Manual

Siemens 7SR224 Manual

Recloser controller
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Download this manual See also: Technical Manual
7SR224 Recloser Controller
Overcurrent Relay
Document Release History
This document is issue
2010/05.
2008/03
First issue
2008/06
Second issue
2009/09
Third issue
2010/04
Fourth issue
2010/05
Fifth issue. Document reformatted due to rebrand.
Software Revision History
2008/03
2435H80011R2d-1a
2008/06
2435H80011R3d-2b
2008/10
2435H80011R4-3
2009/09
2435H80011R4c-3b
2010/04
2434H80011R4d-4
The copyright and other intellectual property rights in this document, and in any model or article produced from it
(and including any registered or unregistered design rights) are the property of Siemens Protection Devices
Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval
system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be
reproduced from this document unless Siemens Protection Devices Limited consent.
While the information and guidance given in this document is believed to be correct, no liability shall be accepted
for any loss or damage caused by any error or omission, whether such error or omission is the result of
negligence or any other cause. Any and all such liability is disclaimed.
©2010 Siemens Protection Devices Limited
The list of revisions up to and including this issue is:
First Release
Second Release. Loss Of Voltage
Third Release. Single/Triple AutoReclose function
Fourth Release. Software maintenance release.
Fifth Release. Synchronising
7SR224 Argus Commissioning & Maintenance Guide

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Summary of Contents for Siemens 7SR224

  • Page 1 Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent.

  • Page 2: Table Of Contents

    7SR224 Argus Commissioning & Maintenance Guide Contents Section 1: Common Functions ......................5 1.1 Overview ...........................5 1.2 Before Testing...........................5 1.2.1 Safety ...........................5 1.2.2 Sequence of Tests .......................5 1.2.3 Test Equipment ......................6 1.2.4 Precautions ........................6 1.2.5 Applying Settings ......................6 1.3 Tests ............................8 1.3.1...
  • Page 3 7SR224 Argus Commissioning & Maintenance Guide 3.2 Voltage Transformer Supervision (60VTS)................55 3.2.1 1 or 2 Phase VT fail....................55 3.2.2 3 Phase VT fail ......................56 3.3 Bus Voltage Transformer Fail (60VTF-Bus) .................57 3.4 Current Transformer Supervision (60CTS)................58 3.5 Broken Conductor (46BC).....................60 3.6 Trip Circuit Supervision (74TCS) ..................62...
  • Page 4 7SR224 Argus Commissioning & Maintenance Guide List of Figures Figure 2-1 Directional Phase Fault Boundary System Angles ............15 Figure 2-2 Phase Overcurrent......................16 Figure 2-3 Voltage Controlled Overcurrent ..................19 Figure 2-4 Cold Load...........................21 Figure 2-5 Cold Load Logic diagram....................22 Figure 2-6 Directional Earth Fault Boundary System Angles..............24...

  • Page 5: Section 1: Common Functions

    7SR224 Argus Commissioning & Maintenance Guide Section 1: Common Functions Overview Commissioning tests are carried out to prove: Equipment has not been damaged in transit. Equipment has been correctly connected and installed. Prove characteristics of the protection and settings which are based on calculations.

  • Page 6: Test Equipment

    7SR224 Argus Commissioning & Maintenance Guide 1.2.3 Test Equipment Required test equipment is: Secondary injection equipment with integral time interval meter The secondary injection equipment should be appropriate to the protection functions to be tested Primary injection equipment A d.c. supply with nominal voltage within the working range of the relay's d.c. auxiliary supply rating A d.c.
  • Page 7 7SR224 Argus Commissioning & Maintenance Guide settings in one group to be altered from the relay fascia while the protection continues to operate on a different unaffected group. The ‘Active Settings Group’ and the ‘Edit Settings Group’ are selected in the ‘System Configuration Menu’.

  • Page 8: Tests

    7SR224 Argus Commissioning & Maintenance Guide Tests 1.3.1 Inspection Ensure that all connections are tight and correct to the relay wiring diagram and the scheme diagram. Record any deviations. Check that the relay is correctly programmed and that it is fully inserted into the case. Refer to ‘Section 2: Settings and Instruments’...

  • Page 9: Ac Energising Quantities

    7SR224 Argus Commissioning & Maintenance Guide AC Energising Quantities Voltage and current measurement for each input channel is displayed in the Instrumentation Mode sub-menus, each input should be checked for correct connection and measurement accuracy by single phase secondary injection at nominal levels. Ensure that the correct instrument displays the applied signal within limits of the Performance Specification.

  • Page 10: Binary Inputs

    7SR224 Argus Commissioning & Maintenance Guide Binary Inputs The operation of the binary input(s) can be monitored on the ‘Binary Input Meters’ display shown in ‘Instruments Mode’. Apply the required supply voltage onto each binary input in turn and check for correct operation.

  • Page 11: Binary Outputs

    7SR224 Argus Commissioning & Maintenance Guide Binary Outputs A minimum of six output relays are provided. Two of these have change over contacts, BO2 & BO3, one has a normally closed contact, BO1 and the remainder have normally open contacts.

  • Page 12: Relay Case Shorting Contacts

    7SR224 Argus Commissioning & Maintenance Guide Relay Case Shorting Contacts CT inputs and terminals B25-B26 (Relay Withdrawn Alarm) are fitted with case mounted shorting contacts which provide a closed contact when the relay is withdrawn from the case. The operation of these contacts should be checked.

  • Page 13: Section 2: Protection Functions

    Section 2: Protection Functions This section details the procedures for testing each protection function of the 7SR224 relay. These tests are carried out to verify the accuracy of the protection pick-ups and time delays at setting and to confirm correct operation of any associated input and output functionality.

  • Page 14: Phase Directional Polarity Check

    7SR224 Argus Commissioning & Maintenance Guide current or voltage. The resulting composite characteristic may be tested by enabling all of the relevant applicable elements or the element operations can be separated or disabled and tested individually. All relay settings should be checked before testing begins. It is recommended that the relay settings are extracted from the relay using Reydisp Evolution software and a copy of these settings is stored for reference during and after testing.

  • Page 15: Figure 2-1 Directional Phase Fault Boundary System Angles

    7SR224 Argus Commissioning & Maintenance Guide to increase/decrease the angle until the instrument reads ‘Rev’. Record the angle (Reverse lead PU). Reduce the current angle until the ’Rev’ extinguishes (Reverse lead DO). and the ‘Fwd’ subsequently returns (Forward lead PU), recording the angles. Repeat the above tests, starting from the Characteristic Angle, but reducing the current phase angle to record the directional boundaries in the opposite (lag) direction.

  • Page 16: Out Of 3 Logic

    7SR224 Argus Commissioning & Maintenance Guide 2.1.1 2 out of 3 logic Ensure that at least 1 Phase Overcurrent element is set to Directional. Apply balanced nominal voltage. Apply current at a level above on phase A only at the characteristic angle for forward operation, normally 45º lagging.

  • Page 17: Definite Time Overcurrent (50)

    7SR224 Argus Commissioning & Maintenance Guide 2.2.1 Definite Time Overcurrent (50) If DTL setting is small, gradually increase current until element operates. If DTL is large apply 0.9x setting, check for no operation, apply 1.1x setting, check operation Apply 2x setting current if possible and record operating time Phase Dir.
  • Page 18 7SR224 Argus Commissioning & Maintenance Guide 2.2.2.1 Element Blocking The Phase Overcurrent elements can be blocked by Binary Input Inhibit, VT Supervision and Inrush Detector operation, as well as 79 Autoreclose settings for Inst/Delayed. The Characteristic can be modified by Cold Load (51-n only) and Voltage Controlled Overcurrent and can be made non-directional by VT Supervision.

  • Page 19: Voltage Controlled Overcurrent (51V)

    7SR224 Argus Commissioning & Maintenance Guide Voltage Controlled Overcurrent (51V) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) OC Phase Control Voltage (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4)
  • Page 20 7SR224 Argus Commissioning & Maintenance Guide Voltage Setting (V, p-p) Measured (V, p-p) I Setting Multiplier Calculated PU Measured 51-1 Pickup 51-2 Pickup 51-3 Pickup 51-4 Pickup 2.3.1.1 Element Blocking The Voltage Controlled Overcurrent function can be set to Inhibit for VT Supervision operation. This functionality should be checked.

  • Page 21: Cold Load (51C)

    7SR224 Argus Commissioning & Maintenance Guide Cold Load (51C) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...

  • Page 22: Inverse Time Overcurrent (51C)

    7SR224 Argus Commissioning & Maintenance Guide Cold Load Enabled Disabled Pick-up Time & CB Open Drop-off Time See Delayed CB Closed Overcurrent (51-n) 51c-n Setting 51c-n Charact 51c-n Time Mult Reduced 51c-n Delay (DTL) Reduced Current Level Current 51c-n Min. Operate Time...
  • Page 23 7SR224 Argus Commissioning & Maintenance Guide Calculated Timing values in seconds for TM =1.0 Curve 2 xIs 5 xIs IEC-NI 10.03 4.28 IEC-VI 13.50 3.38 IEC-EI 26.67 3.33 IEC-LTI 120.00 30.00 ANSI-MI 3.80 1.69 ANSI-VI 7.03 1.31 ANSI-EI 9.52 1.30 Note that the operate time may be subject to the Minimum op time setting for the element and/or may have a Follower DTL applied.

  • Page 24: Directional Earth Fault Polarity Check (67N)

    7SR224 Argus Commissioning & Maintenance Guide Directional Earth Fault Polarity Check (67N) Measured Earth Fault and Sensitive Earth Fault elements can be set as directional. These are polarised from residual voltage, calculated from the 3 phase voltage inputs or the 3Vo input depending on the Phase Voltage Config setting in the CT/VT Config menu.

  • Page 25: Measured Earth Fault (67/50G,67/51G)

    7SR224 Argus Commissioning & Maintenance Guide Measured Earth fault (67/50G,67/51G) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive. 67/51G(x4) can be selected as I...

  • Page 26: Directional Polarity

    7SR224 Argus Commissioning & Maintenance Guide 2.6.1 Directional Polarity See section Directional Earth Fault Polarity Check above for testing details. Forward Reverse Lag (point C) Lead (point A) Lead(point B) Lag (point D) Pick-up Drop-off Pick-up Drop-off Pick-up Drop-off Pick-up...
  • Page 27 7SR224 Argus Commissioning & Maintenance Guide Calculated Timing values in seconds for TM =1.0 Curve 2 xIs 5 xIs IEC-NI 10.03 4.28 IEC-VI 13.50 3.38 IEC-EI 26.67 3.33 IEC-LTI 120.00 30.00 ANSI-MI 3.80 1.69 ANSI-VI 7.03 1.31 ANSI-EI 9.52 1.30 Note that the operate time may be subject to the Minimum op time setting for the element and/or may have a Follower DTL applied.
  • Page 28 7SR224 Argus Commissioning & Maintenance Guide 2.6.3.2 ANSI Reset If the element is configured as an ANSI characteristic, it may have a reset delay applied. If ANSI reset is selected for an IEC characteristic element, the reset will be instantaneous.

  • Page 29: Sensitive Earth Fault (67/50S,67/51S)

    7SR224 Argus Commissioning & Maintenance Guide Sensitive Earth fault (67/50S,67/51S) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...

  • Page 30: Directional Polarity

    7SR224 Argus Commissioning & Maintenance Guide 2.7.1 Directional Polarity See section Directional Earth Fault Polarity Check above for testing details. Forward Reverse Lag (point C) Lead (point A) Lead(point B) Lag (point D) Pick-up Drop-off Pick-up Drop-off Pick-up Drop-off Pick-up Drop-off -85/87.5...
  • Page 31 7SR224 Argus Commissioning & Maintenance Guide Calculated Timing values in seconds for TM =1.0 Curve 2 xIs 5 xIs IEC-NI 10.03 4.28 IEC-VI 13.50 3.38 IEC-EI 26.67 3.33 IEC-LTI 120.00 30.00 ANSI-MI 3.80 1.69 ANSI-VI 7.03 1.31 ANSI-EI 9.52 1.30 Note that the operate time may be subject to the Minimum op time setting for the element and/or may have a Follower DTL applied.
  • Page 32 7SR224 Argus Commissioning & Maintenance Guide 2.7.3.2 ANSI Reset If the element is configured as an ANSI characteristic, it may have a reset delay applied. If ANSI reset is selected for an IEC characteristic element, the reset will be instantaneous.

  • Page 33: Restricted Earth Fault (64H)

    7SR224 Argus Commissioning & Maintenance Guide Restricted Earth fault (64H) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...
  • Page 34 7SR224 Argus Commissioning & Maintenance Guide Phas P.U. Current Operate Time NOTES (Amps) (sec) Amps 2 x Is It is also desirable to check the operating voltage achieved with the setting resistor and all parallel CTs connected but de-energised. A higher capacity test set will be required for this test. Adequate current must be supplied to provide the magnetising current of all connected CTs.

  • Page 35: Negative Phase Sequence Overcurrent (46Nps)

    7SR224 Argus Commissioning & Maintenance Guide Negative Phase Sequence Overcurrent (46NPS) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...

  • Page 36: Definite Time Nps Overcurrent (46Dt)

    7SR224 Argus Commissioning & Maintenance Guide 2.9.1 Definite Time NPS Overcurrent (46DT) If DTL setting is small, gradually increase current until element operates. If DTL is large apply 0.9x setting, check for no operation, apply 1.1x setting, check operation Apply 2x setting current if possible and record operating time Phase P.U.
  • Page 37 7SR224 Argus Commissioning & Maintenance Guide 2.9.2.1 ANSI Reset If the element is configured as an ANSI characteristic, it may have a reset delay applied. If ANSI reset is selected for an IEC characteristic element, the reset will be instantaneous.

  • Page 38: Undercurrent (37)

    7SR224 Argus Commissioning & Maintenance Guide 2.10 Undercurrent (37) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...
  • Page 39 7SR224 Argus Commissioning & Maintenance Guide Phase P.U. Current Operate Time NOTES (Amps) (sec) Amps 0.5 x Is 2.10.1.1 Element Blocking The Undercurrent elements can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 37-1 37-2 Check correct indication, trip output, alarm contacts, waveform record.

  • Page 40: Thermal Overload (49)

    7SR224 Argus Commissioning & Maintenance Guide 2.11 Thermal Overload (49) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...
  • Page 41 7SR224 Argus Commissioning & Maintenance Guide Time Constant (mins) Operate Time (sec) 17.3 34.5 51.8 86.3 51.8 1726 The Thermal State must be in the fully reset condition in order to measure the operate time correctly. This can be achieved by setting change in the Thermal protection settings menu or by pressing the Test/Reset button when the Thermal Meter is shown in the Instruments Mode.

  • Page 42: 2.12 Over/Under Voltage

    7SR224 Argus Commissioning & Maintenance Guide 2.12 Over/Under Voltage 2.12.1 Phase Under/Over Voltage (27/59) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4)
  • Page 43 7SR224 Argus Commissioning & Maintenance Guide Test inputs VL2 and VL3 by repeating the above if necessary. When testing is complete reinstate any of the disabled functions. Where more than one overvoltage (59) elements are being used with different settings, it is convenient to test the elements with the highest settings first.

  • Page 44: Undervoltage Guard (27/59Uvg)

    7SR224 Argus Commissioning & Maintenance Guide 2.12.2 Undervoltage Guard (27/59UVG) If any 27 Undervoltage element is set to be inhibited by the 27 Undervoltage Guard element, this function should be tested. Connect the test voltage inputs to suit the installation wiring diagram utilising any test socket facilities available. It may be useful to temporarily map an LED as ‘General Pickup’...

  • Page 45: Vx Under/Over Voltage (Vx 27/59)

    7SR224 Argus Commissioning & Maintenance Guide 2.12.3 V Under/Over Voltage (Vx 27/59) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows...
  • Page 46 7SR224 Argus Commissioning & Maintenance Guide 2.12.3.1 Element Blocking The Vx Under/Over Voltage elements can be blocked by Binary Input Inhibit and VT Supervision. This functionality should be checked. Element BI Inhibits VT Supervision 27/59x Check correct indication, trip output, alarm contacts, waveform record.

  • Page 47: Nps Overvoltage (47)

    7SR224 Argus Commissioning & Maintenance Guide 2.12.4 NPS Overvoltage (47) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...
  • Page 48 7SR224 Argus Commissioning & Maintenance Guide 2.12.4.1 Element Blocking The NPS Overvoltage element can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 47-1 47-2 Check correct indication, trip output, alarm contacts, waveform record. ©2010 Siemens Protection Devices Limited...

  • Page 49: Neutral Overvoltage (59N)

    7SR224 Argus Commissioning & Maintenance Guide 2.12.5 Neutral Overvoltage (59N) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...

  • Page 50: Inverse Time (59Nit)

    7SR224 Argus Commissioning & Maintenance Guide 2.12.7 Inverse Time (59NIT) It will be advantageous to map the function being tested to temporarily drive the relevant Pickup output in the Pickup Config sub-menu in the Output Config menu as this will allow the Pick-up led to operate for the function.

  • Page 51: Under/Over Frequency (81)

    7SR224 Argus Commissioning & Maintenance Guide 2.12.8 Under/Over Frequency (81) Figure 2-17 Under/Over Frequency Voltage Inputs: ), V ), V Current Inputs: n/a apply zero current to stabilize other functions Disable: Map Pickup LED: 81-n - Self Reset This function can be tested by application of 1P or 3P voltage. For Over-frequency, the elements with the highest setting should be tested first and for Under-frequency the elements with the lowest settings should be tested first.
  • Page 52 7SR224 Argus Commissioning & Maintenance Guide Hyst. D.O. P.U. D.O. Operate NOTES (Hertz) (sec) (calc.) Freq Freq. Time Guard Hertz Hertz +/- 0.5Hz If the element is set as 81-nU/V Guarded, this setting can be tested by applying the test voltage at a level below the 81 U/V Guard Setting at a frequency in the operate range.

  • Page 53: Section 3: Supervision Functions

    7SR224 Argus Commissioning & Maintenance Guide Section 3: Supervision Functions CB Fail (50BF) Figure 3-1 CB Fail Voltage Inputs: Current Inputs: ), I ), I Disable: Map Pickup LED: 50BF-n - Self Reset The circuit breaker fail protection time delays are initiated either from: A binary output mapped as Trip Contact in the OUTPUT CONFIG>BINARY OUTPUT CONFIG menu,...
  • Page 54 7SR224 Argus Commissioning & Maintenance Guide 3.1.1.1 Element Blocking The CB Fail function can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 50BF ©2010 Siemens Protection Devices Limited Chapter 6 Page 54 of 73...

  • Page 55: Voltage Transformer Supervision (60Vts)

    7SR224 Argus Commissioning & Maintenance Guide Voltage Transformer Supervision (60VTS) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...

  • Page 56: Phase Vt Fail

    7SR224 Argus Commissioning & Maintenance Guide 3.2.2 3 Phase VT fail Apply 3P balanced nominal voltage and 3P balanced current at a level between the 60VTS Ipps Load setting and the 60VTS Ipps Fault setting. Reduce the balanced Voltage on all 3 phases until the VTS operates at the 60VTS Vpps setting.

  • Page 57: Bus Voltage Transformer Fail (60Vtf-Bus)

    7SR224 Argus Commissioning & Maintenance Guide Bus Voltage Transformer Fail (60VTF-Bus) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) Note: The use of some functions are mutually exclusive Note: Example shows (x4) Voltage Config =...

  • Page 58: Current Transformer Supervision (60Cts)

    7SR224 Argus Commissioning & Maintenance Guide Current Transformer Supervision (60CTS) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...
  • Page 59 7SR224 Argus Commissioning & Maintenance Guide 3.4.1.1 Element Blocking The CT Supervision function can be blocked by Binary Input Inhibit. This functionality should be checked. Element BI Inhibits 60CTS ©2010 Siemens Protection Devices Limited Chapter 6 Page 59 of 73...

  • Page 60: Broken Conductor (46Bc)

    7SR224 Argus Commissioning & Maintenance Guide Broken Conductor (46BC) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...
  • Page 61 7SR224 Argus Commissioning & Maintenance Guide Inject 1A of balanced current. Gradually increase imbalance current, operating level should be as follows: 46BC Setting 1P unbalance current (% of 3P current) 100% 129% 161% 200% 46BC Setting 3P balanced current (A)

  • Page 62: Trip Circuit Supervision (74Tcs)

    7SR224 Argus Commissioning & Maintenance Guide Trip Circuit Supervision (74TCS) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...

  • Page 63: Magnetising Inrush Detector (81Hbl2)

    7SR224 Argus Commissioning & Maintenance Guide Magnetising Inrush Detector (81HBL2) 7SR224 (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x2) (x4) (x4) (x4) (x4) NOTE: The use of some functions are mutually exclusive Note: (x4) Example shows Voltage Config =...

  • Page 64: Section 4: Control & Logic Functions

    7SR224 Argus Commissioning & Maintenance Guide Section 4: Control & Logic Functions Autoreclose (79) Autoreclose sequences can be specified differently for Phase, Earth, Externally Initiated and SEF faults. Sequences should be simulated for each applicable different fault type with the actual relay settings required for service installed in the relay.

  • Page 65: Loss Of Voltage (Lov) Loop Automation Function

    7SR224 Argus Commissioning & Maintenance Guide Repeat the reduction of Bus and Line voltages to check the pickup and drop off of the Bus Undervolts, Line Undervolts and Voltage Diff settings, if enabled. Outputs signals are available in the Output Matrix to allow leds or Binary Outputs to be allocated to these functions.

  • Page 66: Quick Logic

    7SR224 Argus Commissioning & Maintenance Guide The time stamped Events listing can be downloaded from the relay to a PC to allow diagnosis of the sequence including measurements of sequence Dead Times and other timing without the use of external measuring equipment or complex connections.

  • Page 67: Section 5: Testing And Maintenance

    Relay failure will be indicated by the ‘Protection Healthy’ LED being off or flashing. A message may also be displayed on the LCD. In the event of failure contact the local Siemens office or the manufacturer – see defect report sheet in section 5.3.

  • Page 68: Troubleshooting

    If the above checklist does not help in correcting the problem please contact the local Siemens office or contact PTD 24hr Customer Support, Tel: +49 180 524 7000, Fax: +49 180 524 2471, e-mail: support.energy@siemens.com.

  • Page 69: Defect Report Form

    7SR224 Argus Commissioning & Maintenance Guide Defect Report Form Form sheet for repairs and returned goods (fields marked with * are mandatory fields) Sender: Complete phone number (incl. country code): Complete fax number (incl. country code): * Name, first name:...
  • Page 70 7SR224 Argus Commissioning & Maintenance Guide Siemens Protection Devices Ltd. PO Box 8 Hebburn Tyne & Wear NE31 1TZ England Telephone: (0191) 401 5555 Fax: (0191) 401 5575 ©2010 Siemens Protection Devices Limited Chapter 6 Page 70 of 73...

  • Page 71: Section 6: Relay Software Upgrade Instructions

    7SR224 Argus Commissioning & Maintenance Guide Section 6: Relay Software Upgrade Instructions General Please read thoroughly all of the instructions supplied with the firmware upgrade before starting the download process. • If you are loading firmware into a product that is already installed on site then follow the instructions in section 2, 3 and 4.

  • Page 72: Things To Do Before Loading New Firmware/Software

    7SR224 Argus Commissioning & Maintenance Guide 6.2.4 Things To Do Before Loading New Firmware/Software Ensure that a secure copy of relay settings is available as all settings will be lost during the code upload process. A hard copy is useful for checking purposes. It is usually possible to download the existing settings into Reydisp Evolution, save the file and then reload these settings into the relay following the upgrade.

  • Page 73: 2010 Siemens Protection Devices Limited Chapter

    7SR224 Argus Commissioning & Maintenance Guide 6.3.1 Solving Software Upload Problems The relay will auto detect the download baud rate and will use whatever baud rate set within Reyfresh. However the default and maximum baud rate of 460800 bits/sec is preferred The download procedure has been tested on Windows 98, NT and XP.

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