EARTH CURRENT GUARD FOR SYSTEMS WITH GROUNDED NEUTRAL
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EARTH CURRENT GUARD FOR SYSTEMS WITH GROUNDED NEUTRAL - 1

tasc.office_2010.pdf table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:4.00pt "Arial", sans-serif; } .font1 { font:6.00pt "Arial", sans-serif; } .font2 { font:7.00pt "Arial", sans-serif; } .font3 { font:9.00pt "Arial", sans-serif; } .font4 { font:11.00pt "Arial", sans-serif; } .font5 { font:16.00pt "Arial", sans-serif; } .font6 { font:25.00pt "Arial", sans-serif; } .font7 { font:8.25pt "Arial Black", sans-serif; } .font8 { font:11.00pt "Tahoma", sans-serif; } EARTH CURRENT GUARD FOR SYSTEMS WITH GROUNDED NEUTRAL KPC105X Grounded neutral earth current Protection Օ Definite Time Trip Delay Two individually setable alarm relays Օ For use with 1A current transformers or CBCT Non-resitive earth current offset function Օ Very fast analogue output(<50mS), (F-version) Spcifications Description Auxiliary Voltage: 100-120,200-240, 380-415 or 440-460VAC, 40-70Hz Optional Auxiliary Voltage: 24,48or110VDC Current Input: Upto 1AC.T. or CBCT (Prefered class 0,5 or better) Scaling Any percentage of the CT rating Contact rating: AC: 100VA-250V/2Amax. DC:50W-100V/1Amax. Adjustments: ALARM: Trip level: 0-100% of FSD Delay: 0-30secs WARNING: 0-100% of FSD 0-30secs Offset: 0-25% Analogue Output: Upto20mA, max500R Up to 10V, min 100kohm (other on request) Temperature: -20to+70°C Weight: 0.6kgs Front protection: IP54 (IP65 optional) KPC105E monitors leakage current in a grounded neutral network and provides earth current protection. True RMS measurement not affected by heavily distorted waveforms (1.0%) protection. Less than 50mS current detection time. R1 energises when trip level one (Warning) is exceeded and R2 trips when trip level two (Alarm) is exceeded. R3 is an extra status relay that energises if either alarm relay 1 or 2 is active and can be used for local indication, PMS input, alarm system input etc. Fast response mAoutput signal proportional to a range (KPC105F). Safety The instrument measuring input isoverload protected against high current (<15xCT). If unit is used for tripping it is recomended to use manuel reset. User settable trip levels and delays. Colour of LEDs indicates alarm status. LEDs flash during count-down. OFFSET FUNCTION Only the resistive (ohmic) earth leakage current is a measure for the insulation condition between the AC supply and its protective earth. Any reading of leakage current in a fault free network will be caused by the networks spread capacitance. An offset potentiometer on the rear allows normal reactive (capacitive) currentstobeignored. Protective Earth (PE) Grounding The neutral grounding point is monitored by a Core Balanced Current Transformer (CBCT) or a standard current transformer (preferable class 0,5 or better). The ground connection can be directly ortrough a neutral earth resistorto reduce the maximum earth current in the network. The unit meets IEC60092-504 and the relevant environmental and EMC tests specified in IEC60068/60092 and IEC61000/60533 respectively, to comply with the requirements of the major Classification Societies. C REF: Datasheet.KPC105x - REV: 1.00/10.2011 Megacon reserves the rightto make any changes to the information at any time www.megacon.com

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EARTH CURRENT GUARD FOR SYSTEMS WITH GROUNDED NEUTRAL - 2

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