Woodward WIP1 Manual

Woodward WIP1 Manual

Self powered time overcurrent relay
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WIP1- Self powered time overcurrent relay
Manual WIP1 (Revision F)

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Summary of Contents for Woodward WIP1

  • Page 1 WIP1- Self powered time overcurrent relay Manual WIP1 (Revision F)
  • Page 2 Manual WIP1 GB Woodward Woodward Governor Company reserves the right to update any portion of this publication at any time. Information provided by Woodward Governor Company is believed to be correct and reliable. However, no responsibility is assumed by Woodward Governor Company unless otherwise expressly undertaken.
  • Page 3: Table Of Contents

    Determining the maximum coil resistance ................... 22     5.7.2 Characteristics of the current transformers ................. 23     5.7.3 Overloading of the WIP1 ......................25     5.7.4 Dimensioning example ........................ 26     Operations and settings ..................28  ...
  • Page 4 Time setting ..........................38     6.6.5 Rated frequency setting ....................... 38     6.6.6 Adjustment of the slave address (WIP1-3) .................. 38     6.6.7 Baud Rate setting (WI1-3) ......................38     6.6.8 Setting of parity ..........................39  ...
  • 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

    Manual WIP1 GB Woodward IMPORTANT DEFINITIONS The signal definitions shown below serve the safety of life and limb as well as for the appropriate operating life of the device. DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
  • Page 7: Electrostatic Discharge Awareness

    Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules. Woodward Kempen GmbH reserves the right to update any portion of this publication at any time. In- formation 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 8: General

    The WIP1 is available with earth fault element . 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.
  • Page 9: 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 10: Design

    Manual WIP1 GB Woodward 4. Design Connections Figure 4.1: Connection example with relay tripping Important Information! It is essential that the WIP1 is earthed via terminal DOK-TD-WIP1 Rev.F...
  • Page 11 In this circuit we recommend earthing the current transformers via the relay connection. *1: If the cur-rent 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.
  • Page 12 Manual WIP1 GB Woodward Figure 4.3: Block diagram WIP1-I1 (only phase current measuring) DOK-TD-WIP1 Rev.F...
  • Page 13 Manual WIP1 GB Woodward Figure 4.4: Block diagram WIP1-I1-E1 with earth fault detection via C.T. cable type DOK-TD-WIP1 Rev.F...
  • Page 14: Connecting The Serial Interface

    Manual WIP1 GB Woodward Figure 4.5: Connection example with relay tripping 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 15: Analog Inputs

    Manual WIP1 GB Woodward 4.1.2 Analog inputs The protection unit WIP1 receives the analog input signals of the phase currents I (1S1 - 1S2), (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 16: Operation Outputs

     Electric pulse output As trip commands the WIP1 gives power pulses direct to the tripping coil of the CB (terminals 1 and 2). The- se pulses are given every 250 ms and repeated until the CB is switched off.
  • Page 17: Battery

    Woodward 4.1.5 Battery The WIP1 relay is provided with a lithium battery for maintaining the clock function and to allow setting and read out without external power supply. The fault memory and parameters can be read-out or changed. The battery is housed underneath the front cover of the relay at the lower right corner and is fastened by plug terminals.
  • Page 18: 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 19: Battery Buffer

    The relay versions WIP1-2 and WIP1-3 include an additional power part. This power part serves for the self- supply of the relay. It does not provide the trip energy for the impulse output. The relays WIP1-2 and WIP1-3 will also function without this power part being connected. In that case they will only work with the functional scope of the WIP1-1.
  • Page 20: 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-WIP1 Rev.F...
  • Page 21: Opening The

    Manual WIP1 GB Woodward Opening the front cover For adjustment of the unit the transparent cover has to be opened as illustrated. Do not use force! The trans- parent cover has two inserts for labels. Figure 5.2: How to open the transparent cover...
  • Page 22: 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 23: Characteristics Of The Current Transformers

    Manual WIP1 GB Woodward The two diagrams show the two different tripping methods. In Figure 4.3 the tripping coil is supplied directly by the current transformer. In Figure 4.4 tripping is effected via an internal supply transformer. The result is that with tripping current >...
  • Page 24 Lmax Leit The impedance of WIP1 for the respective pickup value can be found in diagram 1 or diagram 2. The resistance of the tripping coil can be determined by measuring, or calculated from the rated data of the coil.
  • Page 25: Overloading Of The Wip1

    Figure 5.8: Diagram 2: 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 26: 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 27 Figure 5.9: WIP1 - power consumption The graph 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 28: 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 se- lected by pressing <SELECT/RESET>.
  • Page 29: Function Of Push Buttons

    Manual WIP1 GB 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 30: Display

    Manual WIP1 GB Woodward Display if a minimum current is exceeded: When C.T. current is available, the relay is activated at the smallest possible phase current. Displayed are automatically date and time. In this mode measuring values can be called at any time.
  • Page 31: Display Of Measuring Values

    Manual WIP1 GB Woodward After the password has been entered and acceptance is confirmed by message: >>>>Parameter<<< store_value_!___ the <ENTER> push button is to be pressed for about 3 seconds. The initially selected parameter with the changed value is displayed and activated.
  • Page 32: Displaying The Pickup Phase

    Display of tripping values >>>>>FAULT<<<<<< >>>>MEMORY_1<<<< The fault memory provided in the WIP1-1 can save up to five trip events. The individual registers are select- ed 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 33 Manual WIP1 GB Woodward From the energizing time displayed can be concluded whether trippings have occurred. >>Pickup_Time<<< t>=100%_tE>=2.0% Date____15.04.97 Time____15:26:45 The exact time the trip occurred is also recorded. After pressing the <SELECT/RESET> push button, mes- sage „Fault memory 1“ is displayed again.
  • Page 34: Protection Parameters

    Manual WIP1 GB 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 35: Reset Mode For Inverse Time Tripping Characteristics For Phase Overcurrent Element

    Manual WIP1 GB Woodward 6.5.4 Reset mode for inverse time tripping characteristics for phase overcurrent el- ement >>>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 36: Pickup Value For Earth Fault Current Element

    If this pickup value is set to EXIT, the earth fault current element is blocked. At WIP1-1 the earth fault current element is only activated if the current flowing in at least one of the phases is higher than the lowest adjustable threshold of the phase overcurrent element (0,5 A).
  • Page 37: System Parameters

    Manual WIP1 GB 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 38: Date Setting

    Rated_Frequency_ fN_50_Hz________ The rated frequency required can be adjusted by <+> or <-> and then saved by <ENTER>. 6.6.6 Adjustment of the slave address (WIP1-3) >>Slave_Adress<< No._=__1________ By pressing keys <+> or <-> the slave address can be set within a range from 1 - 32.
  • Page 39: Setting Of Parity

    Manual WIP1 GB Woodward 6.6.8 Setting of parity >>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>. 6.6.9 Indication of the software version In this point of the menu, the number of the relay soft-ware version can be called up.
  • Page 40: Earth Fault Overcurrent

    1, the electric pulse output and the flag indicator output are activated. The following setting variants are possible: _I>__Alarm:_Nein _I>__Trip:__Ja__ _I>>_Alarm:_Nein _I>>_Trip:__Ja__ IE>__Alarm:_Nein IE>__Trip:__JA__ IE>>_Alarm:_Nein IE>>_Trip:__Ja__ The WIP1-1 has a restricted relay assignment function. Relay 2 can only be assigned to tripping functions. _I>__Trip:__Ja__ _I>>_Trip:__Ja__ IE>__Trip:__JA__ IE>>_Trip:__Ja__ DOK-TD-WIP1 Rev.F...
  • Page 41: Signal Inputs

    In case of automatic resetting the bistable relay 1 and the LED are reset by applying the transducer current. WIP1-1: The LED extinguishes and the bistable relay 1 is reset if sufficient current is available to put the WIP1-1 into function.
  • Page 42: Clearing The Fault Memory

    >5% x In with phase current and >2% x In with earth current. If no auxiliary voltage is connected, the function is analogue to that described for the WIP1-1. Automatic resetting can only take place approx. 3s (±1s) after a tripping action. This does take possible switch failure times into account.
  • Page 43: Relay Testing And Commissioning

    Manual WIP1 GB Woodward 7. Relay testing and commissioning The test instructions following below help to verify the protection relay performance before or during commis- sioning of the protection system. To avoid a relay damage and to ensure a correct relay operation, be sure that: ...
  • Page 44: Example Of Test Circuit

    Woodward 7.2.2 Example of test circuit For testing WIP1 only current input signals are required. Figure 6.1 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 45: Checking The Tripping Circuits

    Manual WIP1 GB 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 46 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 47: 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 48: Checking The External Blocking

    Manual WIP1 GB Woodward 7.2.7 Checking the external blocking The external blocking input inhibits e. g. the function of the high set element of the phase current. For this purpose the parameter "Blocking Function" in the menu "Signal input blocking" for the high set ele- ment must be set to "Yes".
  • Page 49: Loss Of Information Due To Non-Existent Or Empty Battery

    If during this process the CT current exceeds a value of 0.5A in one phase, the self-supervising relay ener- gizes for 1s. If these fault signals can be reset, then it is only an one-off incident and the WIP1 has not to be switched off. DOK-TD-WIP1 Rev.F...
  • Page 50: Primary Injection Test

    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 51: 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. This is because: ...
  • Page 52 Manual WIP1 GB 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 53 Manual WIP1 GB Woodward 4. Close the front cover again The waste disposal of the removed battery has to be compliant with local laws and standards. DOK-TD-WIP1 Rev.F...
  • Page 54: Technical Data

    Manual WIP1 GB 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 55 Manual WIP1 GB 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: 10 years Accuracy Basic accuracy: ±5% related to the actual current measuring value Basic accuracy of the trip time: ±3% or ±10 ms...
  • Page 56: System Data

    Manual WIP1 GB 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 57: Setting Ranges And Steps

    Manual WIP1 GB Woodward Setting ranges and steps Setting range Step Tolerance I> WIP1-1 0.01; 0.02; 0.05; 0.005; 0.01; ±5% of setting value 0.5...2.5 A (EXIT) 0.02; 0.05; ±5% of setting value WIP1-2/WIP1-3 0.2...2.5 A (EXIT) 0.06 - 300 s 0.01;...
  • Page 58: Inverse Time Tripping Characteristics

    Manual WIP1 GB Woodward Inverse time tripping characteristics Tripping characteristics acc. to IEC 255-4 for phase and earth current element Normal Inverse (Type A) 0.14 ∙ Very Inverse (Type B) 13.5 ∙ Extremely Inverse (Type C) ∙ Long Time Inverse ∙...
  • Page 59 Manual WIP1 GB Woodward Tripping characteristic for phase current element X^2- Tripping delay: ∙ X^2.5- Tripping delay: ∙ X^3- Tripping delay: ∙ X^3.5- Tripping delay: ∙ X^4- Tripping delay: ∙ DOK-TD-WIP1 Rev.F...
  • Page 60: Tripping Characteristics

    Manual WIP1 GB 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 61 Manual WIP1 GB 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-WIP1 Rev.F...
  • Page 62 Manual WIP1 GB 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-WIP1 Rev.F...
  • Page 63 Manual WIP1 GB 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-WIP1 Rev.F...
  • Page 64 Manual WIP1 GB 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-WIP1 Rev.F...
  • Page 65 Manual WIP1 GB Woodward 1000 t[s] 0.01 5 6 7 8 910 Figure 9.11: x^4- tripping characteristic I> I> t[s] > t > 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 66 Manual WIP1 GB Woodward Figure 9.13: Trip example DOK-TD-WIP1 Rev.F...
  • Page 67: Relay Case

    Manual WIP1 GB 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 68: Flag Indicators

    Manual WIP1 GB Woodward Flag indicators Flag indicator WI1SZ4, WISZ5 Figure 7.15: Dimension of flag indicator WISZ4 and WISZ5 panel cut-out: 31 x 20 mm orange 0,25mm² orange 0,25mm² violett 0,25mm² violet 0,25mm² Reset braun 0,25mm² brown 0,25mm² Figure 7.16: Connecting diagram of flag indicator WISZ5...
  • 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 Manual WIP1 GB 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 Manual WIP1 GB 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 Manual WIP1 GB Woodward AvK Generatory s.r.o. ul.4. kvetna 175 755 01 Vsetín Internet www.woodward-seg.cz info@woodward-seg.cz Tel.: +420 571 413 322 DOK-TD-WIP1 Rev.F...

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