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Beluk KSR Reference Manual

Capacitor-bank protection-relay
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Reference Manual
Capacitor Bank Protection-Relay KSR
Capacitor-Bank Protection-Relay
Beluk GmbH
Taubenstrasse 1
86956 Schongau
Germany
Reference Manual
KSR
Tel.:
+49/(0)8861/2332-0
Fax:
+49/(0)8861/2332-22
E-Mail:
blr@beluk.de
Web:
http://www.beluk.de
Rev. 13
2018-07

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  • Page 1 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 Reference Manual Capacitor-Bank Protection-Relay Beluk GmbH Tel.: +49/(0)8861/2332-0 Taubenstrasse 1 Fax: +49/(0)8861/2332-22 86956 Schongau E-Mail: blr@beluk.de Germany Web: http://www.beluk.de...
  • Page 2 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 Revision history Date Name Revision Change 26.05.04 initial document release 15.12.04 new firmware (V1.05) 21.03.05 new firmware (V1.06) 11.04.06 new firmware (V1.8.1) 14.03.07 general additions 04.04.07 new firmware (V1.12.x) 09.10.08 new firmware (V1.14.x) 17.06.09...

  • Page 3: Table Of Contents

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 Contents 1. Overview ................................5 2. Protection Function and Other Features ......................... 6 2.1 Introduction ................................6 2.2 Protection Elements ............................. 7 2.2.1 Overload and Unbalance protection........................7 2.2.2 Overvoltage and Undervoltage Protection ......................7 2.2.3 Hysteresis of threshold values ..........................
  • Page 4 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 6. Commissioning Guide ............................31 6.1 Test ..................................31 6.2 Installation ................................31 6.3 Connection ................................31 6.4 Preparation ................................32 7. Maintenance .................................33 8. Appendix ................................34...

  • Page 5: Overview

    2018-07 1. Overview KSR Capacitor Bank protection device has been designed to protect the capacitors from overload, over voltage and unbalance with the advanced and flexible microprocessor technology. A wide range of protection elements are supplemented by advanced features such as control, metering, data storage, fault recorder, remote communications, supervision and self-monitoring features.

  • Page 6: Protection Function And Other Features

    2. Protection Function and Other Features 2.1 Introduction KSR device accepts 4 current inputs and 3 voltage inputs. A full range “Fast Fourier Transformation” is performed on the input data of all channels (3 Voltage channels, 4 Current channels). Thus provides information about the harmonic contents which distort the sine waveform of the current and voltage channels.

  • Page 7: Protection Elements

    DTL (definite time lag) characteristic as described in section 3. Samples of the current input signals are taken at a frequency of 12.8 kHz. This enables KSR to act as a True RMS measuring device (TRMS) over a wide frequency range.

  • Page 8: Output Contacts

    Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.2.4 Output contacts KSR relays are available with two types of output contacts two change over contacts four normally open contacts Output contacts are user programmable to operate from protection characteristic, DTL for different protection functions and relay self-monitoring feature (watchdog).

  • Page 9: Other Features

    2.3.3 Alarm system The KSR allows the programming of the output relays to produce alarms or trips. The alarm or trip system works with two separate facilities:  The output relays can be programmed separately. Each relay implements an inversion feature as well as a hold state in which the user must manually reset the relay after activating alarm or trip has become Please check Appendix A for detailed explaination of thermal damping function.

  • Page 10: Digital Input

    2.3.5 Fault recorder If the KSR is equipped with the integrated fault recorder, it is possible to store each triggered Alarm event. The integrated fault recorder of the KSR provides 64 memory cells. Each of them stores one Event (ON/OFF).
  • Page 11 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 Seite 1:________________________________________________________________________________  RECORD: Indicates in, which place of the memory the alarm is stored.  ALARM XX: Shows which alarm was triggered Alarm active OFF: Alarm inactive  DATE: Date of the alarm event.

  • Page 12: Usage

    After turning on the supply power, the KSR automatically starts with displaying values of the measurement menu. The key, which is labelled with capital letters „M“ can be used to switch to the main menu.
  • Page 13 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.2 Menu “measurement” This menu holds nearly all the measured values. Each value is displayed together with its name (VLN, Ith,... ) and its origin (L1, L2, L3, N). The units of the measured values are also displayed. Use keys „“ and „“ to select from the variety of measured values.
  • Page 14 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.3 Menu “harmonics” All harmonics are normalized to 100% of the fundamental harmonic. Key ““ selects the data source (voltages, currents), ““ and ““ move the display to higher and lower harmonics. The index, which is shown with each harmonic, specifies its order.
  • Page 15 („2402“). Because of the huge amount of setup possibilities, a set of submenus is used. At certain points the user will be confronted with the need to enter numeric values. The KSR will prompt with the old or a default value. One digit of this value will be marked with a “-“ below it. Now this digit can be changed with the „+“...
  • Page 16 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.5 Menu “setup->parameter” System parameters:  „vt ratio“ - ratio of a VT  „ct-I123 ratio“ - ratio of CT for L1, L2 L3  „ct-Iub ratio“ - ratio of a CT for current 4 (unbalance current) ...
  • Page 17 This menu contains all MODBUS settings:  address - modbus slave address of the device  baudrate - data transfer speed over serial RS485 connection  parity - parity setting for serial connection For details consult the separate technical documentation for KSR Modbus.
  • Page 18 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.7 Menu “setup->relay” Setup for the relays:  „normally open  normally closed“ - this selects the relay inversion. If one chooses „normally open“, the relay will be open in inactive state and it will close on activation. “normally closed” inverts this behaviour.
  • Page 19 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.8 Menu “setup->protection settings”  SOURCE : this selects the data source  TRIGGER : trigger condition  LIMIT : selection of the limit value  T-ON : turn-on delay time ( 0 – 600s ) ...
  • Page 20 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.9 Menu “setup ->set password” This submenu allows to change password from factory setting (2402) to customer requirement. 2.3.6.10 Menu "setup -> clear faultrecorder" This function allows to delete the content of the storage cells from the fault recorder.
  • Page 21 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.11 Menu “reset alarms” This resets all relays, which are configured with the “manual reset” setting. By selection of this menu entry, the relays are set back to inactive state. A new alarm or trip will re-activate the hold state for the relay.
  • Page 22 Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 2.3.6.12 Menu “device info” This menu shows information about the device :  SW = software version  HW = hardware revision number  SN = serial number of the device ...
  • Page 23 Capacitor Bank Protection-Relay KSR 2018-07 To reset the KSR to factory settings, press button 2 & 3 simultaneous. After pressing the buttons the display reading below should appear. This resets all relay settings, parameters, alarm or trip settings and impulse settings to standard values.

  • Page 24: Technical Specifications

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 3. Technical Specifications 3.1 General Performance data according to IEC and VDE standards. 3.2 Current and Voltage Input AC Current Input Rating 1A or 5A (exact rating to be specified during order)

  • Page 25: Settings

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 3.5 Settings Settings 55 – 318V +/- 0.5% Line to Neutral (Note: Settings are done 95 – 550V +/- 0.5% Line to Line corresponding to the primary 0.02 - 1.0A +/- 0.5% (1A type) values) 0.05 - 5.0A +/- 0.5% (5A type)

  • Page 26: Interface

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 3.8 Interface Interface User Interface (Local) An HMI LCD Display Remote Interface RS485 with MODBUS protocol 3.9 Environmental Withstand Ambient Temperature Operating range 0°C … +70°C Storage range -20°C … +85°C...

  • Page 27: Drawings

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 4. Drawings 4.1 Connection diagram...

  • Page 28: Dimensions

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 4.2 Dimensions...

  • Page 29: Diagram

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 4.3 Diagram This diagram shows the set-up for one single alarm. All of the 32 alarms work similar. relay 1 relay 2 limit relay 3 value 1 relay 4 comparator trigger selection value >...

  • Page 30: Applications

    Capacitor Bank Protection-Relay KSR 2018-07 5. Applications The KSR Capacitor Bank protection device is constructed with a compact case and intended for the protection of capacitor banks. Some applications for the KSR are for example: Detection of over load Detection of over voltage...

  • Page 31: Commissioning Guide

    The screw type terminal blocks to connect the KSR device are mounted on the left and right side on the back. The optional connection for the Modbus via RS485 is also mounted on the back.

  • Page 32: Preparation

    Connect the optional communication interface via RS485 on the backside of the KSR if required. 6.4 Preparation After the KSR device has been installed and connected as described in 6.2 and 6.3 the commissioning procedure can begin. Before turning on the supply voltage, the following items should be checked:...

  • Page 33: Maintenance

    2018-07 7. Maintenance There is no maintenance necessary for the KSR if you comply with the operating conditions. It is advisable to accomplish a functional test of the device once a year in connection with the regular examination of the...

  • Page 34: Appendix

    Reference Manual Rev. 13 Capacitor Bank Protection-Relay KSR 2018-07 8. Appendix Appendix A Explanations of the Current damping function for Ith. Ith is a exponentially damped current value to simulate thermal measurement. The formula and the drawings below shall help to understand the Ith function.

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