GE GEK-45404F - Manual

GEK-45404 5 broken delta voltage will therefore be three times the normal delta phase-to-phase voltage with nofault. RATINGS The operating-circuit ratings available are shown in Table I. The operating coil will stand ratedvoltage continuously on any tap. RELAY VOLTAGE RATINGS 60HZ 50HZ IAV51D 115 11...

GEK-45404 6 such that the tripping current does not pass through the contacts of the target and seal-in coil of theprotective relay. BURDENS Burdens for the various relay types are give in Tables IIIA and B. TABLE IIIA 60 - Cycle Burdens Rated Voltage RELAY TYPES VOLTAGE RATING TAP**SETTING VOLT-AMP...

GEK-45404 8 50 - Cycle Burden at Rated Voltages RELAYTYPES VOLTAGERATINGS TAP**SETTINGS VOLT-AMPS POWERFACTOR WATTS 1AV51D 115 A(10) 0.52 0.98 0.52 B(15) 0.67 0.99 0.67 C(25) 1.0 1.0 1.0 D(40) 1.52 1.0 1.52 IAV51D 199 A(16) 0.32 0.85 0.27 B(24) 0.5 0.93 0.46 C(40) 0.83 0.97 0.81 D(64) 1.33 0.99 1.32...

GEK-45404 9 The IAV52K relay is similar to the IAV51K except that it has two, instead of one, normally-opencontacts. The IAV52C is a low-pickup, time-overvoltage relay with two normally-open contacts. It has a seal-in element. It has a capacitor connected in series with the operating coil but, unlik...

GEK-45404 10 RECEIVING, HANDLING, AND STORAGE RECEIVING These relays, when not shipped as a part of a control panel, will be shipped in cartons designed toprotect them against damage. Immediately upon receipt of the relay, an examination should be madefor any damage sustained during shipment. If inj...

GEK-45404 11 CAUTION: Every circuit in the drawout case has an auxiliary brush. It is especially important on currentcircuits and other circuits with shorting bars that the auxiliary brush be bent high enough toengage the connecting plug or test plug before the main brushes do. This will prevent Cur...

GEK-45404 12 ELECTRICAL TESTS Drawout Relays - General Since all drawout relays in service operate in their cases, it is recommended that they be tested intheir cases or an equivalent steel case. In this way any magnetic effects of the enclosure will beaccurately duplicated during testing. A relay m...

GEK-45404 13 INSTALLATION INSPECTION At the time of installation, the relay should be inspected for tarnished contacts, loose screws, or otherimperfections. If any trouble is found, it should be corrected; see MAINTENANCE. Check thenameplate for model number and rating. LOCATION The location should ...

GEK-45404 14 ADJUSTMENTS Target and Seal-in Unit For trip coils operating on current ranging from 0.2 up to 2.0 amperes at the minimum controlvoltage, set the target and seal-in tap plug in the 0.2- ampere tap. For trip coils operating on currents ranging from 2 to 30 amperes at the minimum control ...

GEK-45404 15 Time Setting The time of operation of the overvoltage relay is determined primarily by the setting of the time dial.Further adjustment is obtained by moving the permanent magnet along its supporting shelf; movingthe magnet in toward the back of the relay decreases the time, while moving...

GEK-45404 16 CONTACT CLEANING For cleaning fine silver contacts, a flexible burnishing tool should be used. This consists of aflexible strip of metal with an etched roughened surface, resembling in effect a superfine file. Thepolishing action is so delicate that no scratches are left, yet corroded m...

GEK-45404 17 LIST OF FIGURES FIG. 1 (8043181) TYPE IAV51D RELAY, REMOVED FROM CASE, FRONT VIEW FIG. 2 (8043182) TYPE IAV51D RELAY, REMOVED FROM CASE, REAR VIEW FIG. 3 (K6400439-5) INTERNAL CONNECTIONS OF THE TYPE IAV51D RELAY, FRONT VIEW FIG. 4 (0362A514-3) INTERNAL CONNECTIONS OF THE TYPE IAV51K RE...

GEK-45404 20 FIG. 3 (K-6400439-5) INTERNAL CONNECTIONS OF THE TYPE IAV51D RELAY, FRONT VIEW

GEK-45404 25 FIG. 8 (0275A2004-0) EXTERNAL CONNECTION DIAGRAM OF TYPES IAV51KAND IAV52K FOR GENERATOR GROUND-FAULT PROTECTION

GEK-45404 26 FIG. 9 (0275A2003-0) EXTERNAL CONNECTION DIAGRAM OF TYPE IAV51D, IAV52C AND IAV52D FOR GROUND-FAULT DETECTION ON AN UNGROUNDED SYSTEM

GEK-45404 29 FIG. 12 (8025039-0) CROSS SECTION OF DRAWOUT CASE SHOWING POSITION OF AUXILIARY BRUSH