Woodward WIP1 Manual
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Woodward WIP1 Manual

Self powered time overcurrent relay
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WIP1 – Self Powered Time Overcurrent Relay
Manual WIP1 (Revision J)

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  • Page 1 Released WIP1 – Self Powered Time Overcurrent Relay Manual WIP1 (Revision J)
  • Page 2 Released Manual WIP1 Woodward Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly undertaken.

  • Page 3: Table Of Contents

    Phase Current ≥ 0.5 A (CT-Powered Mode) ................18 5.4.1 5.4.2 Phase Current < approx. 0.35 A (Offline Mode) ................18 5.4.3 Dual Power Option for WIP1-2 and WIP1-3 ................18 Indicating and Operating Elements ....................19 5.5.1 Front Plate ........................... 19 5.5.2 Display ............................
  • Page 4 Date Setting ..........................36 6.6.4 Time Setting ..........................36 6.6.5 Rated Frequency Setting ......................36 6.6.6 Setting of the Communication Slave Address (only WIP1-3) ............36 6.6.7 Baud Rate Setting (only WI1-3) ....................36 6.6.8 Setting of Parity (only WIP1-3) ....................37 6.6.9 Indication of the Software Version ....................

  • Page 5: Comments On The Manual

    We do not accept any liability for damage and operational failures caused by operating er- rors or disregarding the directions of this manual. No part of this manual is allowed to be reproduced or passed on to others in any form, unless Woodward Kempen GmbH have approved in writing.

  • Page 6: Important Definitions

    CAUTION, without the safety alert symbol, is used to address practices not related to personal injury. Woodward Kempen GmbH reserves the right to update any portion of this publication at any time. Information provided by Woodward Kempen GmbH is believed to be correct and reliable. However, no responsibility is assumed by Woodward Kempen GmbH unless otherwise expressly undertaken.

  • Page 7: General

    MTBF („Mean Time Between Failures“) is approx. 200 years (calculated based on data up to year 2012), and there are WIP1 relays being in service at our customers’ sites for more than 22 years even under harsh climate conditions.

  • Page 8: Characteristics And Features

    High-set overcurrent element with instantaneous or definite time function  Two-stage earth fault supervision with tripping and/or alarm function  Redundant power supply unit for external voltage supply (Option WIP1-2)  Serial interface for connection to SCADA Systems (Option WIP1-3) ...

  • Page 9: Design

    Figure 4.1: Connection example with relay tripping It is mandatory that the WIP1 is grounded (earthed) via the terminal marked by “ ”. All grounding connections must be low-inductance, i. e. as short as possible, and national standards – if applicable – must be followed.
  • Page 10 Please note: In this circuit we recommend earthing the current transformers via the relay connection. *1: If the current transformers have to be earthed directly, the earthing connection on WIP1 must be removed. Otherwise the measuring transformer for earth fault measuring is short-circuited. DOK-TD-WIP1E Rev. J...
  • Page 11 Released Manual WIP1 Woodward Figure 4.3: Connection for measuring only phase current DOK-TD-WIP1E Rev. J...
  • Page 12 Released Manual WIP1 Woodward Figure 4.4: Connection including earth fault detection via C.T. cable type DOK-TD-WIP1E Rev. J...

  • Page 13: Connecting The Serial Interface

    Released Manual WIP1 Woodward 4.1.1 Connecting the Serial Interface The relays are connected to a PC/laptop via an RS232/RS485-interface converter by using the two-wire method. Each relay is connected to terminals P and N. The last relay in terms of “hardware” must then be equipped with terminating resistors.

  • Page 14: Current Transformer Inputs

    Woodward 4.1.2 Current Transformer Inputs (1S1 ‑ 1S2), The protection unit WIP1 receives the analog input signals of the phase currents I (2S1 ‑ 2S2) and I (3S1 ‑ 3S2) for phase current, earth current and negative sequence measuring. The measured current values are analogously filtered and fed to the analog/digital converter.

  • Page 15: Operation Outputs

    In case the coil burden is higher than the contact breaking capacity, the following circuit arrangement can be used: Figure 4.6: Example By connecting a trip contact of the WIP1 and an aux. contact of the C.B. in series it is prevented that the WIP1 contact is arcing so that safe switching off is guaranteed. ...

  • Page 16: Trip Indication

    Woodward 4.1.5 Trip Indication The WIP1 is provided with an LED for the optical trip indication. Tripping can additionally be indicated via an external indicator. Flashing of the LED can be suppressed by parameter setting. Fault values can be shown on the display, and moreover, the fault values are stored within the relay together with a timestamp.

  • Page 17: Working Principle

    (16 samples per period). Digital Circuits The essential part of the WIP1 is a powerful microcontroller. All of the operations - from the analogue/digital conversion to the relay trip decision - are carried out by the microcontroller digitally. The relay program is saved in an EPROM (Electrically-Programmable-Read-Only-Memory).

  • Page 18: Operating Modes

    WIP1). 5.4.3 Dual Power Option for WIP1-2 and WIP1-3 The relay versions WIP1-2 and WIP1-3 offer a dual power option, i. e. the option to connect an additional external power supply. The dual power source makes the relay operational independently of the supply via the CTs. Moreover, there is an extended setting range for the phase overcurrent protection, the lowest possible pickup threshold is 0.2 A.

  • Page 19: Indicating And Operating Elements

    Switching the relay on. If no key is pressed longer than 1 min. the relay switches off. The push buttons <SELECT/RESET>, <+>, <-> and <DISPLAY ON> can be activated without removing the transparent cover by simply using a pin or screw driver. Figure 5.1: Front plate of WIP1 DOK-TD-WIP1E Rev. J...

  • Page 20: Requirements For The Main C.t.s

    C.T.s. The tripping principle of the WIP1 is that the transformer current is driven through the tripping coil in case tripping takes place. Care must be taken that the current transformer can transmit enough energy at the set overcurrent pickup value to activate the tripping coil, but does not generate too much energy at high short circuit currents which would damage the overcurrent relay.

  • Page 21: Characteristics Of The Current Transformers

    Released Manual WIP1 Woodward The two diagrams above show the two different tripping methods. In Figure 5.2 the tripping coil is supplied directly by the current transformer. In Figure 5.3 tripping is effected via an internal supply transformer. The result is that with tripping current > 12 x In the coil resistance must not be smaller than 17 Ohm.
  • Page 22 Lmax Leit The impedance of WIP1 for the respective pickup value can be found in Figure 5.6 or Figure 5.7. The resistance of the tripping coil can be determined by measuring, or calculated from the rated data of the coil.

  • Page 23: Overloading Of The Wip1

    Figure 5.7: WIP1 impedance curve for the range: 1 A to 30 A 5.7.3 Overloading of the WIP1 The maximum power consumption of the WIP1 must not exceed 1000 VA for the maximum tripping time. The maximum power that a transformer can supply is calculated as follows: ��...

  • Page 24: Dimensioning Example

    = 0.45 A is used. As the rated current of the coil is a direct current, the setting value for the WIP1 for tripping with a single- phase fault must be calculated as per eq. 1. This results in a setting value of 0.5 A.
  • Page 25 Figure 5.8: WIP1 - power consumption The diagram above shows the limit value of the load to which the WIP1 may be subjected in case of a short circuit. In the event that the transformer power nevertheless exceeds the limit value, it is possible to connect resistors in series into the secondary circuit.

  • Page 26: Operations And Settings

    Woodward 6. Operations and Settings By the following figure operation of the WIP1 is illustrated. The different menus can be selected by pressing push button <+> or <-> and then called up by the <SELECT/RESET> push button. If the relay is activated by transformer current the main menu is displayed. The different menus can be selected by pressing <SELECT/RESET>.

  • Page 27: Function Of Push Buttons

    Released Manual WIP1 Woodward Function of Push Buttons The push buttons are used for calling parameters, selecting the measuring quantities to be displayed and for changing and saving of parameters. The different menus can be selected by pressing push button <+> or <-> and then called up by the <SELECT/RESET>...

  • Page 28: Display

    Released Manual WIP1 Woodward 6.1.2 Display The menu of the data displayed can be subdivided into five groups:  Measuring values  Protection parameters  Kind of tripping/relay assignment  System parameters  Signal input parameters  Fault memory ...

  • Page 29: Display Of Measuring Values

    Released Manual WIP1 Woodward The place for entering the information is marked by the letter “x” on the display. If a wrong password is entered, this is indicated by the information: >>>>Parameter<<< Wrong_Password__ By pressing the <ENTER> push button, the password can be entered again.

  • Page 30: Displaying The Pickup Phase

    Display of Tripping Values >>>>>FAULT<<<<<< >>>>MEMORY_1<<<< The fault memory provided in the WIP1 can save up to five trip events. The individual registers are selected by push buttons <+> and <->. Configuration of all registers is identical. >>>>>>TRIP<<<<<< I>___L1_xx_xx_x_ In the display an overcurrent trip with current increase in phase L1 is shown.
  • Page 31 Released Manual WIP1 Woodward Example: When selecting an inverse time characteristic a reset time of 300 s is set and the following information can be gathered in failure cases:  Number of energizing events  Max. current during each of the energizing events ...

  • Page 32: Protection Parameters

    Released Manual WIP1 Woodward Protection parameters 6.5.1 Pickup Value for Phase Overcurrent Element The pickup value for the phase overcurrent element I> is displayed as secondary C.T. current in ampere. >>>Overcurrent<< I>___=_0.95_A___ If this pickup value is set to “EXIT”, the overcurrent trip is blocked.

  • Page 33: Reset Mode For Inverse Time Tripping Characteristics For Phase Overcurrent Element

    Released Manual WIP1 Woodward 6.5.4 Reset Mode for Inverse Time Tripping Characteristics for Phase Overcurrent Element >>>Reset-Modus<< t_=_300s________ To ensure tripping, even with recurring fault pulses (packing faults) shorter than the set trip delay, the reset mode for inverse time tripping characteristics can be switched over. For adjustment t = 60 s or 300 s, the tripping time is maintained accordingly and only reset after 60 s or 300 s faultless condition.

  • Page 34: Pickup Value For Earth Fault Current Element

    Released Manual WIP1 Woodward 6.5.8 Pickup Value for Earth Fault Current Element The pickup value for the earth fault current element IE> is given in ampere as secondary C.T. current. >>>Earth_Fault<< IE>_0.05_A______ If this pickup value is set to EXIT, the earth fault current element is blocked.

  • Page 35: System Parameters

    Released Manual WIP1 Woodward System Parameters 6.6.1 Selection of the Language >>>>>SYSTEM<<<<< >>>>SETTINGS<<<< Language for the messages displayed is either German or English. >>>PARAMETER<<<< Language_English The language can be chosen by push buttons <+> and <->. 6.6.2 Password Programming This is the menu for changing an existing password.

  • Page 36: Date Setting

    Rated_Frequency_ fN_50_Hz________ The rated frequency required can be adjusted by <+> or <-> and then saved by <ENTER>. 6.6.6 Setting of the Communication Slave Address (only WIP1-3) >>Slave_Adress<< No._=__1________ By pressing keys <+> or <-> the slave address can be set within a range from 1 - 32.

  • Page 37: Setting Of Parity (Only Wip1-3)

    Released Manual WIP1 Woodward 6.6.8 Setting of Parity (only WIP1-3) >>Parity_Check<< _____even_______ The following three parity settings are possible:  even parity  odd parity  no parity The setting can be changed by push buttons <+> and <-> and saved by pressing <ENTER>.

  • Page 38: Earth Fault Overcurrent

    For WIP1-2 and WIP1-3 the following setting variants are possible: _I>__Alarm:_No__ _I>__Trip:__Yes_ _I>>_Alarm:_No__ _I>>_Trip:__Yes_ IE>__Alarm:_No__ IE>__Trip:__Yes_ IE>>_Alarm:_No__ IE>>_Trip:__Yes_ The WIP1-1 has a restricted relay assignment function. Relay 2 can only be assigned to tripping functions. _I>__Trip:__Yes_ _I>>_Trip:__Yes_ IE>__Trip:__Yes_ IE>>_Trip:__Yes_ DOK-TD-WIP1E Rev. J...

  • Page 39: Signal Inputs

    WIP1-1: The LED extinguishes and the bistable relay 1 is reset if sufficient current is available to put the WIP1-1 into function, i. e. already below the 0.5 A limit for the CT-powered mode. (For operating modes, see 5.4.1.

  • Page 40: Clearing The Fault Memory

    Resetting of a displayed message, of the LED and also of the output relay can be realized via RS485 interface. The effect of the Software Reset and the Manual Reset is the same. If the WIP1 is used in a substation which is accessed rarely by a service technician, it is recommended to use the following settings: ...

  • Page 41: Relay Testing And Commissioning

    Released Manual WIP1 Woodward 7. Relay Testing and Commissioning The test instructions following below help to verify the protection relay performance before or during commissioning of the protection system. To avoid a relay damage and to ensure a correct relay operation, be sure that the following conditions are fulfilled: ...

  • Page 42: Example Of Test Circuit

    Woodward 7.2.2 Example of Test Circuit For testing WIP1 only current input signals are required. Figure 7.1 shows a simple example of a single phase test circuit with adjustable current energizing the WIP1 relay under test. Figure 7.1: Test circuit...

  • Page 43: Checking The Tripping Circuits

    Released Manual WIP1 Woodward 7.2.3 Checking the Tripping Circuits Parameter <SIGNAL INPUT BLOCKING> is followed by >>>>>RELAY-<<<<< >>>>>TEST<<<<<<< This mode can only be entered in battery operation, i.e. when there is no current flowing. By pressing push button <SELECT/RESET> the test mode is entered and the password queried.
  • Page 44 After this push button has been pressed, the alarm relay and self-test relay are de-energized and the LED should extinguish. >>Test_current<< >>>switch-off<<< The WIP1 indicates disconnection of the test current by the following message: >>>>>RELAY-<<<<< >>>>>>TEST<<<<<< Should the test current be so low that the coil fails to trip, the test will be stopped.

  • Page 45: Checking The Input Circuits And Measured Values

    7.2.6 Checking the High Set Element of the Relay The high set element of the WIP1 is checked in the same manner. It is important, however, that the selected test current is not too high because of trip delay at inverse time characteristics may become shorter than the high set setting.

  • Page 46: Checking The External Blocking

    Because of its powerful combined indicating and measuring functions, the WIP1 relay may be tested in the manner of a primary injection test without extra expenditure and time consumption.

  • Page 47: Benefits From Using The Display Battery

    Released Manual WIP1 Woodward Benefits from Using the Display Battery The display battery does not affect the protection functions in any way. However, the following benefits are directly related to the battery:  Possibility to make settings or read information from the display even without sufficient supply from the C.T.s...

  • Page 48: Maintenance

    For electromechanical or static relays, maintenance testing will be performed at least once a year according to the experiences. For digital relays like WIP1, this interval can be substantially longer because of the following reasons: ...

  • Page 49: Display Battery

    Released Manual WIP1 Woodward Display Battery The relay is buffered by a battery for feeding the LC display as well as for memorizing fault values and reset of the trip relay. Failure of the battery has no effect on the protective functions of the relay. The battery has a service life of several years.
  • Page 50 Released Manual WIP1 Woodward 1. Do not start any maintenance work unless before the entire equipment is dead according to the WARNING/safety instructions above. 2. Open the Front Cover with a fully isolated screw driver. Do not use force! 3. Carefully remove the battery by means of a fully isolated screw driver out of the plug terminals. Replace the battery.
  • Page 51 Released Manual WIP1 Woodward 4. Close the front cover again Waste Disposal This protective device contains a battery, and therefore it is labeled with the following symbol according to the EU Directive 2006/66/EC: Batteries can be harmful to the environment. Damaged or unusable batteries must be disposed of in a container that is specially reserved for this purpose.

  • Page 52: Technical Data

    Released Manual WIP1 Woodward 9. Technical Data Measuring input Rated data: Rated current In = 1 A, 50/60 Hz Thermal withstand capability in current circuit: dynamic current withstand (half-wave) 135 x In for 1 s 54 x In for 10 s...
  • Page 53 Released Manual WIP1 Woodward Battery: Rated voltage: 3.0 V Signal battery voltage too low at: 2.2 V Min. operating voltage: 2.0 V Life span storage: approx.. 10 years (depends on relay configuration and application) Accuracy Basic accuracy: ±5% related to the actual current measuring value...

  • Page 54: System Data

    Released Manual WIP1 Woodward System Data Design standard: Generic standard: EN 50082-2, EN 50081-1 Product standard: EN 60255-6, IEC 255-4, BS 142 Specified ambient service Storage temperature range: - 40°C to +85°C Operating temperature range: - 20°C to +55°C Environmental protection class F...

  • Page 55: Setting Ranges And Steps

    Released Manual WIP1 Woodward Setting Ranges and Steps The WIP1 is operative with limited functionality (display of values and automatic reset) at the following current values:  single-phase starting approx. 0.35 A  two-phase starting approx. 0.22 A  three-phase starting approx. 0.17 A However, there is full functionality if the current flowing in at least one of the phases is higher than 0.5 A.

  • Page 56: Inverse Time Tripping Characteristics

    Released Manual WIP1 Woodward Inverse Time Tripping Characteristics Tripping characteristics acc. to IEC 255-4 for phase and earth current element Normal Inverse (Type A) 0.14 > [ �� ] �� = ∙ �� �� 0.02 �� − 1 �� ��...
  • Page 57 Released Manual WIP1 Woodward Tripping characteristic for phase current element X^2- Tripping delay: [ �� ] �� = ∙ �� ��> �� �� �� X^2.5- Tripping delay: [ �� ] �� = ∙ �� ��> �� �� �� X^3- Tripping delay: ��...

  • Page 58: Tripping Characteristics

    Released Manual WIP1 Woodward 9.3.1 Tripping Characteristics 1000 I> 10.0 t[s] 0.05 5 6 7 8 910 Figure 9.1: Normal inverse tripping characteristic 1000 I> t[s] 10.0 0.05 0.05 5 6 7 8 910 Figure 9.2: Very inverse tripping characteristic...
  • Page 59 Released Manual WIP1 Woodward 10000 1000 t[s] I> 10.0 0.05 0.05 0.01 5 6 7 8 910 Figure 9.3: Extremely inverse tripping characteristic 10000 1000 I> t[s] 10.0 0.05 5 6 7 8 910 Figure 9.4: Long Time Inverse DOK-TD-WIP1E Rev. J...
  • Page 60 Released Manual WIP1 Woodward I> 10.0 t[s] 0.05 5 6 7 8 910 Figure 9.5: Ri-Inverse I> I> t[s] > > 0.06 0.06 I>> I>> 35 35 >> >> 0.06 0.06 0.01 Figure 9.6: Definite time tripping characteristic DOK-TD-WIP1E Rev. J...
  • Page 61 Released Manual WIP1 Woodward 1000 t[s] 0.01 5 6 7 8 910 Figure 9.7: x^2- tripping characteristic 1000 t[s] 0.01 5 6 7 8 910 Figure 9.8: x^2.5- tripping characteristic DOK-TD-WIP1E Rev. J...
  • Page 62 Released Manual WIP1 Woodward 1000 t[s] 0.01 5 6 7 8 910 Figure 9.9: x^3- tripping characteristic 1000 t[s] 0.01 5 6 7 8 910 Figure 9.10: x^3.5- tripping characteristic DOK-TD-WIP1E Rev. J...
  • Page 63 Released Manual WIP1 Woodward 1000 t[s] 0.01 5 6 7 8 910 Figure 9.11: x^4- tripping characteristic I> I> t[s] > > 0.06 0.06 I>> I>> 35 35 >> >> 0.06 0.06 0.01 Figure 9.12: Setting example: Overcurrent setting with short circuit function and limiting the tripping characteristic...
  • Page 64 Released Manual WIP1 Woodward Figure 9.13: Trip example DOK-TD-WIP1E Rev. J...

  • Page 65: Relay Case

    Manual WIP1 Woodward Relay Case Relay WIP1 is designed to be fastened onto a DIN-rail acc. to DIN EN 50022. The front plate of the relay is protected with a sealable transparent cover (IP40). Figure 9.14: Dimensions WIP1 in mm Connection terminals The connection of up to a maximum of 2 x 2.5 mm...

  • Page 66: Flag Indicators

    Released Manual WIP1 Woodward Flag Indicators Flag indicator WI1SZ4, WISZ5 Figure 9.15: Dimension of flag indicator WISZ4 and WISZ5 Panel cut-out: 31 x 20 mm Figure 9.16: Connecting diagram of flag indicator WISZ4 orange 0,25mm² orange 0,25mm² violett 0,25mm² violet 0,25mm²...

  • Page 67: Faq (Frequently Asked Questions)

    Released Manual WIP1 Woodward 10. FAQ (Frequently Asked Questions) We will have to store the WIP1 for some time before In principle, there is no problem with this. first use. Is this possible? However, sustained exposure to dust or humidity during storage may cause damage and reduce the lifetime of the relay.
  • Page 68 0.5 A, which is also the smallest possible setting for the tripping threshold. For WIP1-2 and WIP1-3, there is a dual power option offering several benefits, see Chapter 5.4.3 for details. What is the minimum current that the relay needs for...

  • Page 69: Order Form

    140 V AC resp. 200 V DC Self-powered with additional power supply , with RS485 interface Rated current Without earth current measuring (only possible for WIP1-1) With additional earth current measuring I Rated current 1A E> E>> Standard (PRO OPEN DATA Protocol)
  • Page 70 Released Manual WIP1 Woodward Setting list WIP1 Note ! All settings must be checked at site and should the occasion arise, adjusted to the object/item to be protect- Project: Woodward job.-no.: Function group: = Location: + Relay code: - Relay functions:...
  • Page 71 Released Manual WIP1 Woodward Kind of tripping Specification Unit Default Actual WIP11 WIP12 WIP13 setting setting Reset Manual *Tripping via electro pulse or relay Relay Kind of tripping for IE> range Trip Trip-LED Flashing * When using a tripping coil the parameter has to be set to „Electro pulse“.
  • Page 72 Released Manual WIP1 Woodward Woodward Kempen GmbH Krefelder Weg 47  D – 47906 Kempen (Germany) Postfach 10 07 55 (P.O.Box)  D – 47884 Kempen (Germany) Phone: +49 (0) 21 52 145 1 Internet www.woodward.com Sales Tel.: +49 (0) 21 52 145 331 oder +49 (0) 711 789 54 510 Fax: +49 (0) 21 52 145 354 oder +49 (0) 711 789 54 101 e-mail: SalesPGD_EUROPE@woodward.com...

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