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Manual WIP1 GB

Woodward

DOK-TD-WIP1 Rev.F

51

8. Maintenance

Maintenance testing is generally done on site at regular intervals. These intervals vary among users depend-
ing on many factors: e.g. the type of protective relays employed; the importance of the primary equipment
being protected; the user's past experience with the re-lay, etc.

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:



the WIP1 relays are equipped with very wide self-supervision functions, so that many faults

in the relay can be detected and signalized during service. Important: The self-supervision

output relay must be connected to a central alarm panel!



the combined measuring functions of WIP1 relays enable supervision the relay functions

during

service.

A testing interval of two years for maintenance will, therefore, be recommended.
During a maintenance test, the relay functions including the operating values and relay tripping characteris-
tics as well as the operating times should be tested.

8.1 Changing the 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.

The battery is housed underneath the front cover of the relay at the lower right corner and is fastened by
plug terminals.

The following instructions are mandatory for the safe replacement of the battery.

Before changing the battery on a WIP it is imperative that the complete device is dead
and the following 5 safety regulations are always met:

Hazardous Voltage

Battery contacts behind front cover may cause electric shock.



Disconnect from all power (supply) sources



Secure against reconnection



Verify if the equipment is dead



Connect to ground and short-circuit all phases



Cover or safeguard all live adjacent parts

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Содержание WIP1

Страница 1: ...WIP1 Self powered time overcurrent relay Manual WIP1 Revision F...

Страница 2: ...s 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 Woodw...

Страница 3: ...ing of the WIP1 25 5 7 4 Dimensioning example 26 6 Operations and settings 28 6 1 Function of push buttons 29 6 1 1 Measuring value and fault indication 29 6 1 2 Display 30 6 1 3 Setting procedure 30...

Страница 4: ...Clearing the fault memory 42 7 Relay testing and commissioning 43 7 1 Checking the set values 43 7 2 Secondary injection test 43 7 2 1 Test equipment 43 7 2 2 Example of test circuit 44 7 2 3 Checking...

Страница 5: ...d descriptions this manual includes Text graphic and formulae do not always apply to the actual delivery scope The drawings and graphics are not true to scale We do not accept any liability for damage...

Страница 6: ...voided will result in death or serious injury WARNING indicates a hazardous situation which if not avoided could re sult in death or serious injury CAUTION used with the safety alert symbol indicates...

Страница 7: ...and plastic ash trays away from the control the modules and the work area as much as possible 4 Do not remove any printed circuit board PCB from the control cabinet unless absolutely necessary If you...

Страница 8: ...its power supply energy from the C T circuits and provides the tripping pulse energy to the circuit breaker Due to its wide setting ranges the trip ping characteristic can be selected to protect a wi...

Страница 9: ...ipping 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 Phase and earth current measuring duri...

Страница 10: ...Manual WIP1 GB Woodward DOK TD WIP1 Rev F 10 4 Design 4 1 Connections Figure 4 1 Connection example with relay tripping Important Information It is essential that the WIP1 is earthed via terminal...

Страница 11: ...te 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 Ot...

Страница 12: ...Manual WIP1 GB Woodward DOK TD WIP1 Rev F 12 Figure 4 3 Block diagram WIP1 I1 only phase current measuring...

Страница 13: ...Manual WIP1 GB Woodward DOK TD WIP1 Rev F 13 Figure 4 4 Block diagram WIP1 I1 E1 with earth fault detection via C T cable type...

Страница 14: ...lays 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 equi...

Страница 15: ...anically decoupled from the relay electronics Signal inputs Signal inputs for blocking and protection terminals 14 and 17 for fast trip terminals 32 and 33 as well as external reset terminals 14 and 1...

Страница 16: ...36 For applications where a higher trip output energy is required a relay with one potential free changeover contact is provided in the trip circuit This Relay can be assigned to any function see 5 7...

Страница 17: ...ing the Battery Disconnect from all power supply sources Secure against reconnection Verify if the equipment is dead Connect to ground and short circuit all phases Cover or safeguard all live adjacent...

Страница 18: ...decision are carried out by the microcontroller digitally The relay program is saved in an EPROM Electrically Programmable Read Only Memory With this program the CPU of the microcontroller processes...

Страница 19: ...starting approx 0 22 A three phase starting approx 0 17 A 5 3 3 Important note for the battery function Battery Mode By pressing the push button Display ON the relay is activated WIP1 1 is supplied fr...

Страница 20: ...d the LED flashes and can be switched off by pressing any push button Refer to chapter 5 7 4 and 5 9 5 5 Function push buttons The following four function push buttons are arranged at the front of the...

Страница 21: ...P1 Rev F 21 5 6 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 H...

Страница 22: ...ort circuit currents which would damage the overcurrent relay Here some brief instructions on how tripping coil and current transformer are determined First of all it must be established how much forc...

Страница 23: ...saturation to such an extent that the current flowing through the coil becomes too low to ensure definite tripping The secondary transformer current Isec is proportional to the primary transformer cu...

Страница 24: ...ue 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 If a transformer is loaded with its rated imp...

Страница 25: ...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...

Страница 26: ...he cable impedance is assumed to be 0 5 According to eq 4 the maximum impedance is as follows Zmax 57 9 Now the maximum voltage Umax can be calculated with eq 3 0 5 57 9 28 95 If a current transformer...

Страница 27: ...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...

Страница 28: ...vated by transformer current the main menu is displayed The different menus can be se lected by pressing SELECT RESET Figure 6 1 Main menu overview Fault memory 5 Fault memory 4 Fault memory 3 Fault m...

Страница 29: ...the relay by the DISPLAY ON push button the default settings of the relay are recall from the parameter memory DEFAULT_SETTINGS ____AKTIVATED____ 6 1 1 Measuring value and fault indication Display whe...

Страница 30: ...pping relay assignment System parameters Signal input parameters Fault memory Relay test The fault memory consists of five individual stores of identical configuration For changing from the main menu...

Страница 31: ...ng the ENTER push button the password can be entered again After the password has been accepted parameters can be set for 5 minutes without re entering the pass word During this time the procedure for...

Страница 32: ...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...

Страница 33: ...SET push button mes sage Fault memory 1 is displayed again Example When selecting an inverse time characteristic a reset time of 300 s is set and the following infor mation can be gathered in failure...

Страница 34: ...verse Very_Inverse Extremely Inverse RI Inverse Long Time Inverse X 2_Time X 2 5_Time X 3_Time X 3 5_Time X 4_Time The text displayed can be changed by push buttons By the ENTER push button the requir...

Страница 35: ...e set value Minimal_time tImin_ _0 1_s Note The minimum time cannot be set lower than the shortest trip delay of a tripping characteristic The latter depends on the multiplier of a tripping characteri...

Страница 36: ...aracteristic Normal_Inverse__ When adjusting the tripping characteristic one of the four following possibilities are displayed Definite time characteristics Definite time earth fault current protectio...

Страница 37: ...ssword_ _xxxx_ To activate a new password the existing one has to be entered first _1st_input______ _Password _xxxx_ The new password can be entered by push buttons SELECT RESET ENTER and The place fo...

Страница 38: ...e procedure applies for setting the time Parameter Time____11 56 08 6 6 5 Rated frequency setting The adapted FFT algorithm requires the rated frequency of the object to be protected as a parameter fo...

Страница 39: ...version a respective note can be found in the index Software_Version V02 1 00________ 6 7 Tripping method Relay matrix 6 7 1 Reset Here we have to distinguish whether the LED and the bistable relay 1...

Страница 40: ...e trip indication function of the LED TRIP can be de activated TRIP LED Flashing______ The LED reset can be done by activating the reset function please refer to chapter 6 9 6 7 5 Relay matrix only re...

Страница 41: ...element and if available earth fault overcurrent and high set element 6 9 Reset There are four possibilities for resetting the WIP1 as well as the relay 1 latched The parameter setting mode under menu...

Страница 42: ...lt memory that is displayed upon activation of the relay by the transducer current but the date and time External reset Applying voltage resets the signal relay and extinguishes the LED The Display re...

Страница 43: ...ts are connected correctly 7 1 Checking the set values Pressing the DISPLAY ON push button activates the display By repeatedly pressing the push button SELECT RESET all relay set values may be checked...

Страница 44: ...44 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...

Страница 45: ...and the display shows PROTECTION SETTINGS After entering the correct password the trip mode starts upon the following inputs TEST_CURRENT SET_TO_ 1Amp When 1 A is reached test of the relay begins The...

Страница 46: ...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 messag...

Страница 47: ...current to a value corresponding to twice the operating value and inject the current in stantaneously The operating time measured by the timer should have a deviation of less than 3 of the set value...

Страница 48: ...ble overcurrent threshold and an auxiliary voltage 110 V DC is supplied to the terminals 32 and 33 tripping takes place in stantaneously tl 50 ms 10 ms 7 2 9 Remote trip Checking the input Remote trip...

Страница 49: ...cating the year might perhaps show un defined values In cases the error memory fails and the energizing time has perhaps elapsed the following text is displayed Loss_of_Data Press_Reset The informatio...

Страница 50: ...e usually limited to very important protective relays in the power system Because of its powerful combined indicating and measuring functions the WIP1 relay may be tested in the manner of a primary in...

Страница 51: ...o years for maintenance will therefore be recommended During a maintenance test the relay functions including the operating values and relay tripping characteris tics as well as the operating times sh...

Страница 52: ...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 ful...

Страница 53: ...Manual WIP1 GB Woodward DOK TD WIP1 Rev F 53 4 Close the front cover again The waste disposal of the removed battery has to be compliant with local laws and standards...

Страница 54: ...Power consumption 1 mA DC or 6 mA AC Max voltage 270 V AC or 360 V DC continuously Electro pulse output circuit Tripping Recurring cycle with 8 pulses of 150 ms each For currents 12A AC 10 the trip e...

Страница 55: ...Ohmic Load cos 1 Inductive Load cos 0 4 L R 7 ms Rated load 250 VAC 16 A 400 VAC 7 A 30 VDC 16 A 250 VAC 8 A 400 VAC 3 5 A 30 VDC 8 A Making current 16 A Max contact voltage 400 VAC 125 DC Max contac...

Страница 56: ...rame as per EN 60255 6 and IEC 255 22 1 2 5 kV 1MHz Electrostatic discharge ESD test as per EN 61000 4 2 and IEC 255 22 1 8 kV air discharge 6 kV contact discharge Electrical fast transient Burst test...

Страница 57: ...ngs with increased trip delays up to 50 ms If a C T current 0 5 A was present before tripping the trip delay decreases about 20 ms Setting range Step Tolerance IE 0 05 2 0 A EXIT 0 001 0 002 0 005 0 0...

Страница 58: ...haracteristics acc to IEC 255 4 for phase and earth current element Normal Inverse Type A 0 14 1 Very Inverse Type B 13 5 1 Extremely Inverse Type C 80 1 Long Time Inverse 120 1 RI Inverse Time 1 0 33...

Страница 59: ...WIP1 GB Woodward DOK TD WIP1 Rev F 59 Tripping characteristic for phase current element X 2 Tripping delay 100 X 2 5 Tripping delay 100 X 3 Tripping delay 100 X 3 5 Tripping delay 100 X 4 Tripping del...

Страница 60: ...characteristic Figure 9 2 Very inverse tripping characteristic 1 2 3 4 5 6 7 8 910 20 I IS 0 1 1 10 100 1000 t s tI 0 1 0 2 0 3 0 4 0 5 0 6 0 8 1 0 1 4 2 0 3 0 4 0 6 0 8 0 10 0 0 05 1 2 3 4 5 6 7 8 9...

Страница 61: ...Figure 9 4 Long Time Inverse 1 2 3 4 5 6 7 8 910 20 I IS 0 01 0 1 1 10 100 1000 10000 t s tI 0 3 0 4 0 5 0 6 0 8 1 0 1 4 2 0 3 0 4 0 6 0 8 0 10 0 0 05 0 05 0 1 0 1 0 2 0 2 1 2 3 4 5 6 7 8 910 20 I IS...

Страница 62: ...Definite time tripping characteristic 1 2 3 4 5 6 7 8 910 20 I IS 0 1 1 10 100 t s tI 10 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 05 1 10 I IN 0 01 0 1 1 10 100 t s I I tI t...

Страница 63: ...istic Figure 9 8 x 2 5 tripping characteristic 1 2 3 4 5 6 7 8 910 20 I IS 0 01 0 1 1 10 100 1000 t s 0 1 0 1 1 0 10 0 2 0 3 0 4 0 6 1 4 2 0 3 0 4 0 6 0 8 0 0 8 1 2 3 4 5 6 7 8 910 20 I IS 0 01 0 1 1...

Страница 64: ...igure 9 10 x 3 5 tripping characteristic 1 2 3 4 5 6 7 8 910 20 I IS 0 01 0 1 1 10 100 1000 t s 0 1 0 1 1 0 10 0 2 0 2 0 3 0 3 0 4 0 6 0 8 1 4 2 0 3 0 4 0 6 0 8 0 1 2 3 4 5 6 7 8 910 20 I IS 0 01 0 1...

Страница 65: ...rrent setting with short circuit function and limiting the tripping characteristic 1 2 3 4 5 6 7 8 910 20 I IS 0 01 0 1 1 10 100 1000 t s 0 1 0 1 1 0 10 0 2 0 2 0 3 0 4 0 6 0 8 1 4 2 0 3 0 4 0 6 0 8 0...

Страница 66: ...Manual WIP1 GB Woodward DOK TD WIP1 Rev F 66 Figure 9 13 Trip example...

Страница 67: ...c 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 m...

Страница 68: ...anel cut out 31 x 20 mm violet 0 25mm violett 0 25mm brown 0 25mm braun 0 25mm orange 0 25mm orange 0 25mm weiss 0 50mm white 0 50mm green 0 50mm gr n 0 50mm red 0 50mm rot 0 50mm back 0 50mm schwarz...

Страница 69: ...current measuring IE IE Rated current 1A Standard PRO OPEN DATA Protocol Communication with MODBUS RTU Protocol Possible with interface only M Please leave box empty if option is not desired 1 The po...

Страница 70: ...r Unit Default setting Actual setting WIP 11 WIP 12 WIP 13 Overcurrent pickup value A 0 5 X X X Selection of tripping characteristic phase current element Definite Time X X X Overcurrent trip delay s...

Страница 71: ...Trip YES X X X Short circuit I Alarm No X X Short circuit I Trip YES X X X Earth fault overcurrent IE Alarm No X X Earth fault overcurrent IE Trip YES X X X Earth short circuit IE Alarm No X X Earth...

Страница 72: ...Manual WIP1 GB Woodward DOK TD WIP1 Rev F 72 AvK Generatory s r o ul 4 kvetna 175 755 01 Vset n Internet www woodward seg cz info woodward seg cz Tel 420 571 413 322...

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