GEK-45404F MULTILIN GE Power ManagementINSTRUCTIONSOVERVOLTAGE RELAYSTYPES IAV, 51DK52CDKGE Power Management205 Great Valley ParkwayMalvern, PA 19
GEK-4540410RECEIVING, HANDLING, AND STORAGERECEIVINGThese relays, when not shipped as a part of a control panel, will be shipped in cartons designed t
GEK-4540411CAUTION:Every circuit in the drawout case has an auxiliary brush. It is especially important on currentcircuits and other circuits with sh
GEK-4540412ELECTRICAL TESTSDrawout Relays - GeneralSince all drawout relays in service operate in their cases, it is recommended that they be tested i
GEK-4540413INSTALLATIONINSPECTIONAt the time of installation, the relay should be inspected for tarnished contacts, loose screws, or otherimperfection
GEK-4540414ADJUSTMENTSTarget and Seal-in UnitFor trip coils operating on current ranging from 0.2 up to 2.0 amperes at the minimum controlvolt
GEK-4540415Time SettingThe time of operation of the overvoltage relay is determined primarily by the setting of the time dial.Further adjustment is ob
GEK-4540416CONTACT CLEANINGFor cleaning fine silver contacts, a flexible burnishing tool should be used. This consists of aflexible strip of
GEK-4540417LIST OF FIGURESFIG. 1 (8043181) TYPE IAV51D RELAY, REMOVED FROM CASE, FRONT VIEWFIG. 2 (8043182) TYPE IAV51D RELAY, REMOVED FROM CASE, REAR
GEK-4540418FIG. 1 (8043181-0) TYPE IAV51D RELAY, REMOVED FROM CASE, FRONT VIEW
GEK-4540419FIG. 2 (8043182-0) TYPE IAV51D RELAY, REMOVED FROM CASE, REAR VIEW
GEK-454042DESCRIPTION...
GEK-4540420FIG. 3 (K-6400439-5) INTERNAL CONNECTIONS OF THE TYPE IAV51D RELAY, FRONTVIEW
GEK-4540421FIG. 4 (362A514-3) INTERNAL CONNECTIONS OF THE TYPE IAV51K RELAY, FRONTVIEW
GEK-4540422FIG. 5 (K-6556505-0) INTERNAL CONNECTIONS OF THE TYPE IAV52C RELAY, FRONTVIEW
GEK-4540423FIG. 6 (418A790-0) INTERNAL CONNECTIONS OF THE TYPE IAV52D RELAY, FRONTVIEW
GEK-4540424FIG. 7 (0257A8379-0) INTERNAL CONNECTIONS OF THE TYPEIAV52K RELAY, FRONTVIEW
GEK-4540425FIG. 8 (0275A2004-0) EXTERNAL CONNECTION DIAGRAM OF TYPES IAV51KANDIAV52K FOR GENERATOR GROUND-FAULT PROTECTION
GEK-4540426FIG. 9 (0275A2003-0) EXTERNAL CONNECTION DIAGRAM OF TYPE IAV51D, IAV52CAND IAV52D FOR GROUND-FAULT DETECTION ON AN UNGROUNDED SYSTEM
GEK-4540427FIG. 10 (K6154391-3) TEST CONNECTIONS FOR OVERVOLTAGE RELAYS
GEK-4540428NOTE: TD=Time Dial settingFIG. 11 (0178A8140-0) TIME VOLTAGE CURVES FOR TYPES IAV51D, 51K,52D, AND 52K RELAYS
GEK-4540429FIG. 12 (8025039-0) CROSS SECTION OF DRAWOUT CASE SHOWING POSITION OFAUXILIARY BRUSH
GEK-454043DESCRIPTIONThese are single-phase, sensitive overvoltage relays of the induction disk construction. They areequipped with a time dial so as
GEK-4540430FIG. 13 (0275A4399-0) OUTLINE OF IAV51K AND IAV52K EXTERNAL CAPACITOR
GEK-4540431FIG. 14 (K6209270-2) OUTLINE AND PANEL DRILLING FOR RELAY TYPES IAV51D, 52DAND IAV52C
GEK-4540432* FIG. 15 (K6209271-8) OUTLINE AND PANEL DRILLLING FOR RELAY TYPES IAV51KAND IAV52K
GEK-454044APPLICATIONThese are single-phase, sensitive, time-delay overvoltage relays. They are principally applicable forsensitive overvoltage groun
GEK-454045broken delta voltage will therefore be three times the normal delta phase-to-phase voltage with nofault.RATINGSThe operating-circuit ratings
GEK-454046such that the tripping current does not pass through the contacts of the target and seal-in coil of theprotective relay.BURDENSBurdens for t
GEK-45404750 - Cycle Burdens at Rated VoltagesRELAYTYPESVOLTAGERATINGTAP**SETTING VOLT-AMPS POWERFACTORWATTSIAV51D 345 A(28) 31.9 0.36 11.4B(42) 28.3
GEK-45404850 - Cycle Burden at Rated VoltagesRELAYTYPESVOLTAGERATINGSTAP**SETTINGS VOLT-AMPS POWERFACTORWATTS1AV51D 115 A(10) 0.52 0.98 0.52B(15) 0.67
GEK-454049The IAV52K relay is similar to the IAV51K except that it has two, instead of one, normally-opencontacts.The IAV52C is a low-pickup, time-ove
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