tasc.office_2010.pdf table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:3.30pt "Arial", sans-serif; } .font1 { font:4.00pt "Arial", sans-serif; } .font2 { font:5.00pt "Arial", sans-serif; } .font3 { font:6.00pt "Arial", sans-serif; } .font4 { font:7.00pt "Arial", sans-serif; } .font5 { font:10.00pt "Arial", sans-serif; } .font6 { font:25.00pt "Arial", sans-serif; } .font7 { font:12.00pt "Trebuchet MS", sans-serif; } INDED LIVE DC MAINS KRM1 69E Insulation relay for non-grounded live DC Systems Օ Self powered from any input from 12 to 60VDC For both battery and power generated DC networks Օ "SEV" measuring principle For use in land, marine and offshore installations Spթcifications Description Network Voltage: 12-60VDC Contact rating: AC: 100VA-250V/2Amax. DC:50W-100V/1Amax. Trip level adjustment: 5to110kohm Trip delay: Fixed 3 secs. Accuracy: 5% of full range Temperature: -20to+70°C Weight: 0.1kgs Front protection: IP41 Dimensions: L: 52mm, H: 94mm, D: 58mm The digitally controlled low cost KRM169E is self powered and uses the Megacon "SEV" insulation measuring principle to measurethe insulation in live non-grounded DCsystems. The resultant insulation level is measured between the complete galvanically interconnected DC network and its protective earth. The signals flow to ground via the path of the insulation fault, the level of flow expresses the insulation resistance, the direction of flow expresses the fault polarity. The high measuring accuracy and trip repeatability of the KRM169E is not influenced by variation of the DC voltage level (including imposed AC ripple) between 12 and 60VDC, or by symmetrical earth faults. The measuring method does not support corrosion. Alarm relay output The alarm relay is fail-safe and energises when powered. The relay trip level isadjustable between 5 and 110kohm with a fixed alarm delay of 3 seconds. Remove the lower terminal lid for access to the trip level adjustment. The relay will automatically return to the normal state when the insulation level is above the trip level. Faulty polarity "Pathfinder" function The LED continuously shows the condition of the insulation: Unit meets IEC60092-504 and relevant environmental and EMC tests specified in IEC60068/60092 and IEC61000/60533 respectively, to comply with Classification Societies requirements. 52mm Normal (HighInsulation) Positive fault Negative fault SteadyGreenLED O FlashingRedLED O SteadyRedLED O NEG PE POS