User Manual
Contents
1. Status E or No auxiliary power supply ot off System normal mode No tripping On of Earth fault low set start Of Earth fault high set start Earth fault high set tripped On me a fof or ae 3 Push Buttons Reset Button e The reset button is for resetting the light indicators I gt or 1 gt gt after an earth fault tripping has occured e To reset press the reset button once Test Button e Test button is for checking the relay operation e Push on the test button to simulate an earth fault low set and high set trip condition 4 Trip Contacts There is one set of tripping contacts namely R1 R1 Manual Reset Type e This contact R1 is activated during an earth fault trip the contacts remain activated regardless of the removal of fault current This relay can only be reset by pressing the RESET button 5 Electrical Specification Auxiliary Supply MK201 A 240A 198 265 VAC MK201 A 110A 94 127 VAC Supply frequency 50Hz NPS AU sects done 3 VA typical Trip Contact Rated Voltage 250 VAC Continuous carry 5A cos 1 0 Expected electrical life 100 000 operations Expected mechanical life 5 million operations Setting Ranges Low set sens 0 1A to 2 0A 2 to 40 Low set delay time DELAY 0 05 sec to 1 0 sec High set ISS gt to 10x I gt or disable High set delay time t gt gt instantaneous Indic2. MK201A DT Earth Fault Relay User s Guide A BRIEF OVERVIEW h 1A 0 4 0 5 06 X6 aga ASA oss B X4 17 X8 z X2 X10 f MK 201A a Auxiliary power supply indicator b High set start trip status indicator c Low set start trip status indicator d Earth fault high set adjustment e Trip reset button f Test button g Earth fault low set adjustment h Delay time adjustment TECHNICAL DATA 1 Current and Time Adjustments Earth fault Low set Current I gt Adjustment e This adjustment is for setting the minimum earth fault current for tripping If the measured current exceeds this threshold value tripping starts After a prefixed delay time determined by the DELAY adjustment the trip contacts will be activated e The setting range is from 0 1A to 2A Earth fault High set Current gt gt Adjustment e This adjustment is for setting the instantaneous tripping current due to an earth fault e The setting range is from 1x to 10x of the earth fault low set setting value I gt gt axl gt a 1to 10 e This high set feature can be disabled by setting the tripping current to infinity Time Delay DELAY Adjustment e This time delay setting is for setting the delay time from the start of the earth fault low set tripping to actual tripping of the relay contact e The setting range is from 0 05 sec to 1 0 sec 2 Light Indicators The light indicators display the status of the system O AUX O gt
3. ators Auxiliary SUPPIV success Green LED indicator PISE dune Red LED indicator HP sn ee Red LED indicator 6 Mechanical MOURIR mena Panel mounting FronEBanels sans Standard DIN 96x96 mm Approximate weight 0 6 kg 7 Con nection Diagram a Earth fault relay MK 201A _ 8 Case Dimensions A 96 mm Y 4 90mm S 96 mm 70mm gt l nnn d Front E MK 201A 90mm ae Panel Cutout 90mm La
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