www. ElectricalPartManuals. com GENERAL fj ELECTRIC INSTRUCTIONS GEH-1793H Supersedes GEH-1793G INSTANTANEOUS AUXILIARY RELAY TYPES

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1 TYPES NSTRUCTONS HGAllA, G, H, J, K, P, S, T, V, W, X NSTANTANEOUS AUXLARY RELAY GENERAL fj ELECTRC H Supersedes G

2 PAGE DESCRPTON TABLE 1 RATNGS TABLE 2 BURDENS DC COLS TABLE 3 AC COLS. TABLE 4 CHARACTERSTCS ACCEPTANCE TESTS CONTENTS MECHANCAL ADJUSTMENTS PCKUP TEST CONSTRUCTON RECEVN G, HANDLN G AND STORA GE PERODC CHECKS AND ROUTNE MANTENANCE CONTACT CLEANNG RENEWAL PARTS #ifi!!t

3 NSTANTANEOUS AUXLARY RELAY TYPES HGA lla, G, H, J, K, P, S, T, Y, W, X DESCRPTON These relays are double pole, hinged armature relays, suitable for applications where a high-speed, low energy device is required. For details of the HGAll type relay, see Table 1. TABLE 1 ---REAv CASE-AND-MODNT1NG coNTACT-ARRANGEMENT HGA11A BACK CONNECTED WTH COVER, SURFACE- DPDT CONTACT ARRANGEMENT - MOUNTED RELAY - SEE FGURE 3 SEE FGURE 2 HGA11A( -)F SMLAR TO HGA11A, EXCEPT WTH GLASS SMLAR TO HGA11A FRONT COVER AND PROVSON FOR SEM-FLUSH MOUNTNG - SEE FGURE 4 HGA11A( -)G SMLAR TO HGA11A, EXCEPT WTH GLASS SMLAR TO HGA11A FRONT COVER - SEE FGURE 3 HGA11A(-)N SMLAR TO HGA11A AND NSPECTED BY SMLAR TO HGA11A NAVY - SEE FGURE 3 HGA11G FRONT CONNECTED WTH COVER FOR FRONT SMLAR TO HGA11A MOUNTNG - SEE FGURE 8 HGA11H FRONT CONNECTED, SURFACE MOUNTED, AND SMLAR TO HGA11A S AVALABLE WTHOUT COVER ONLY - SEE FGURE 7 HGA11J FRONT CONNECTED WTH COVER - SEE SMLAR TO HGA11A FGURE 5. HGA11K FRONT CONNECTED WTHOUT COVER, BUT WTH SMLAR TO HGA11A PROVSONS FOR FRONT MOUNTNG - SEE FGURE 6 HGA11P FRONT CONNECTED WTH COVER, PALLADUM SMLAR TO HGA11A CONTACTS - SEE FGURE 5. continued 3.

4 ---RELAY _ HGAllS HGAllT HGAllV HGAllV(-) F HGA11W HGA11X TABLE 1 ( cont'd) C ASE-AND-MODNT1NG FRONT CONNECTED WTH COVER, PROVSONS FOR FRONT MOUNTNG - SEE FGURE 8 FRONT CONNECTED WTH SHOCK RE SSTANT COVER - SEE FGURE 9 BACK CONNECTED WTH COVER, SURFACE MOUNTED RELAY, PALLADUM CONTACTS SEE FGURE 3 SMLAR TO HGA11V EXCEPT WTH GLASS FRONT COVER AND PROVSON FOR SEM FLUSH MOUNTNG - SEE FGURE 4 FRONT CONNECTED WTHOUT COVER, BUT WTH COVER CLPS - SEE FGURE 7 SMLAR TO HGA11K, BUT WTH PALLADUM CONTACTS - SEE FGURE 6 RATNGS _ c5ntact-arrangement SMLAR TO HGA11A SMLAR TO HGA11A SMLAR TO HGA11A SMLAR TO HGA11A - SEE FGURE 2 SMLAR TO HGA11A SMLAR TO HGA11A The HGA11 relays are available for coil ratings for standard voltages up to 575 volts for 25, 50 or 60 cycles, and up to 250 volts DC. The DC relays are also available with coil current ratings up to five amperes. The current closing rating of the contacts is 30 amperes. The current carrying rating is 12 amperes continuously or 30 amperes for one minute. The interrupting ratings ( non-inductive circuits) for the various voltages are listed in the Table TABLE NoN:NDDCTVE -C1RCD1TS _ 1NDDCT1VE-C1RCD1TS CONTACT CONTACT CRCUT VOLTS TYPE HGA CRCUT VOLTS TYPE HGA SNGLE DOUBLE SNGLE DOUBLE AC DC BREAK BREAK AC DC BREAK BREAK

5 DC COLS AC COLS BURDENS Burden data for DC coils is shown in Table 3. TABLE 3 DC COL BURDENS RE 1STAN t Rt 1ST AN VOLTS +10% WATTS AMPS +10% WATTS Certain quantities should be defined before giving burden data for AC coils: Roc is resistance of a coil as measured with an ohmmeter, bridge, etc. Roo is the AC resistance of a coil when AC power is flowing through the coil, but the relay is not picked up. X oo is the inductive impedance when the coil is energized, but the relay is not picked up. The resistive and inductive parts of impedance of coils under picked-up conditions are designated as Rpu and Xpu Zoo is the impedance of the relay in dropout condition Zpu is the impedance of the relay in picked-up condition. TABLE 4 AC COL BURDENS --corr----ratrng Roc Roo xoo zoo Rp u --xru z pu -- volts HERTZ +10% +10% +10% +10% +10% +10% +10% Continued

6 TABLE 4 (Cont'd) AC COL BURDENS --co1--- AT1NG--- oc RoO Xoo zoo---- Pu Xpu Zpu-- volts HERTZ +10% +10% +10% +10% +10% +10% +10% CHARACTERSTCS The Type HGA11 is a hinged armature type, high speed auxiliary relay. When the coil is energized, a magnetic flux flows through the armature pole piece and attracts the armature. Two auxiliary contacts are mechanically coupled to the armature. These auxiliary contacts can be normally open or normally closed, and can be used to make or break auxiliary circuits. MECHANCAL ADJUSTMENTS ACCEPTANCE TESTS There should be at least 1/16 inch wipe on normally closed 11b11 contacts and normally open 11 a11 contacts, as measured at the top of the moving contact carrier. This is determined by operating the armature by hand and checking that there is at least 1/16 inch movement of the top edge of the contact carrier after the contacts have made. When the armature is operated by hand, 11a11 contacts should make within 1/32 inch of each other, i.e., with one contact just making, the gap of the other should never be more than 1/32 inch. This also applies to the 11b11 contacts. There should be at least 1/32 inch clearance between the armature tailpiece and the bottom inside surface of the cover for all back connected relays with cover. A special cover with cutouts in the sides is-available to check this clearance. PCKUP TEST Pickup is defined as the m1mmum voltage or current at which the armature operates and seals firmly against the pole piece. t is adjusted by means of the contra 1 spring that is fastened between the anchor pin and the armature tai 1 piece. The spring should be in the front hole of the anchor pin and the armature groove that gives the highest value of pickup without exceeding 80 percent of its rated AC volts or DC amps or 60 percent of rated DC volts. 6

7 * * The AC voltage or DC current relays are adjusted to pick up at percent of rating at rated frequency. The DC voltage relays are adjusted to pick up at percent of rating when cold. After AC relays have been continuously energized for a few hours (minimum four hours) at rated voltage, the pickup and dropout voltages increase by 3. 5 to 7. 5 percent. For DC relays, the pickup and dropout voltages increase by 5 to 10 percent. The wipe on HGA11 relays exerts a contact pressure of 35 grams 10 percent on 11a" contacts and 10 grams 10 percent on 11b" contacts. CONS TR UCTON The HGA11 is a molded case relay. The various parts of the relay can be seen in Figure 10. The control spring is used for adjusting the pickup and dropout voltage. The function of the voltage barrier is to avoid flashover between a pair of electrically separate, but mechanically coupled normally closed contacts, or between a pair of normally open contacts. Cover spring clips maintain spring force against the cover to hold the cover in position. RECEVNG, HANDLN G AND STORA GE These relays, when not included as part of a control panel will be shipped in cartons designed to protect them against damage. mmediately upon receipt of a relay, examine it for damage sustained in transit. f damage resulting from rough handling is evident, file a damage claim at once with the transportation company and promptly notify the nearest General Electric Apparatus Sales Office. Reasonable care should be exercised in unpacking the relay in order that none of the parts are damaged nor the adjustments disturbed. f the relays are not to be installed immediately, store them in their original cartons in a place that is free from moisture, dust and metallic chips. Foreign matter that collects on the outside of the case could get inside when the cover is removed, and cause trouble when operating the relay. PERODC CHECKS AND RO UTNE MANTENANCE n view of the vital role of relays in the operation of a power system, it is important that a periodic test program be followed. The interval between periodic checks will vary depending upon environment, type of relay and the user's experience with periodic testing. Until the user has accumulated enough experience to select the test interval best suited to his individual requirements, the points listed under ACCEP TANCE TESTS should be checked at an interval of from one to two years. * ndicates Revision 7

8 CONTACT CLEANNG A flexible burnishing tool should be used for cleaning relay contacts. This is a flexible strip of metal with an etched-roughened surface, resembling in effect a superfine file. The polishing action is so delicate that no scratches are left, yet it will clean off any corrosion thoroughly and rapidly. ts flexibility ensures cleaning the actual points of contact. Knives, files, abrasive paper or cloth of any kind should not be used to clean relay contacts. RENEWAL PARTS Sufficient quantities of renewal parts should be carried in stock to promptly replace any that are worn, broken, or damaged. When ordering renewal parts, address the nearest Sales Office of the General Electric Company, specify quantity required, name of the part wanted, and the complete model number of the relay for which the part is required. 8

9 2 2!. J ' - 005(11S8 (2 Hat )} 0---'----l _ 4..,.' DOTTED LNES FOR HGAllK ONLY TOP OF RELAY T ! {2 l{)lfs --.2_.5_ 1_ 001 LL l{o ---e+--- 1fo PANEL DR LLNG (FRONT VEW} Figure 1 OUTLNE.1B9 (#12} (2 l{)lfs} HGA11K ONLY..._--- 3 { l i -- f---..1_ #10-32 THREAD 8 NTERNAL CONNECT ONS {FOONT V E.W} Figure 2 Figures 1 and 2 (0104A8573-0) nternal Connections Diagram for Types HGA11A, G, H, J, K, P, S, T, V, W, and X Relays 9 1 f

10 TOP OF RELAY DoD 1 l:f- 1 f n! DRLL ( 2 H:Jl SH t-1t-H,..._;- }'t'pe OF PANEL "A'" "B", r L :-- OUTLNE J HSULAT 7/16" 2-13/16"! STEEL 9/16" 1-318" J PANEL DR LLJ NG (FRONT VEW) - j B SPACE REQU REO TO RMVE COVER 1 1 _j NTERNAL CONNECTONS (BACK VEW) * =WTH HGA4A.4J,14K,14N.l7A CONTACT 41S NOT USED UNLESS PCKUP 15 RASED TO 60% (DC) OR 80% (AC) OF RATNG HGCA DOES NOT USED CONTACT 4. * Figure 3 (K ) Outline and Panel Drilling Dimensions for the Types HGAllA(-)G, HGAllA(-)N and HGAllV Relays *ndicates Revision 10

11 .. (2-410LES)!l r- --t 11 _..., l l Ef,=±j j_ 1 l 1 OA= -- -.nee b= 1A3 PANEL DRLL' MG FQT VE - f : - -t- i PMEL Mlti. too's. to f-- llfte co.s. lack VJE ' th.. --l to-32 -f- - r-ahi T l 1- L BJ-t N *WTH HGA14A, 17A CONTACT S MOT USED ta.ess,ck-up S RAS 0 TO 801 (CC) OR M)l (AC} Of RAT fig. * Figure 4 (0104A8557-2) Outline and Panel Drilling Dimensions for the Type HGAllA(-)F Relay *ndicates Revision 11 '

12 2, r , i : L ] 1" 1" " t , NOTE: WRE SZE DOES NOT EXCEED 0. 2" OVER NSJLA TON ' OUTL NE L 1" -" J :::c F--r,_.,., T 1" J \1" 5" re 16 SP CE REQlJ t.red TO REMOV COVER - TQP _Qf_llf.l.A.'L 1-1 5" 5" 8 8 PANE L DRLLNG (FRONT V EW) 1" DRLL 4 (2 HOLES) y T l 4 NTERNAL CONNECTONS (BACK V lew} Figure 5 (K ) Outline and Panel Drilling Dimensions for Types HGAllJ, HGAllP Relays 12 N # THREAD UNLESS PANEL Tii CKN ESS 1 S SPEC ned

13 .1695 {118) {2 HO LES) OUT L! NE r 2 _. l 8 7 NTERNAL CONNECTONS (FRONT VEW) Figure 6 (K ) Outline and Panel Drilling Dimensions for Types HGA11K, HGA11X Relays 13

14 TOP OF RELA.Y - 'V c..., t5- m= NorE: OUTLNE ; 8-:'" 8 4. ( 2 HOLES) PANEL DRLLNG (FRONT VEW) WRE SZE DOES NCY' EXCEED 0.2" OVER NSULATON ui, , 4 '-----+>----,-+--l ATt. ;..o...ce i SPACE REQURED TO DNOVE COVER 1 2 P_j, , ' NTER...'VAL CONNECTONS (BACK VEW) Figure 9 (0127A9568-0) Outline and Panel Drilling Dimensions for the Type HGAllT(-)A Relay 16 \ \ J..iO _ -lq" #10-32 THREAD 8 lld UNLESS PANEL THCKNESS S SPECFED

15 -- CONNECTON STUDS FOR BACK-CONNECTED RELAYS COVER CliP H NGED ARMATURE Figure 10 ( ) Typical HGA Relay Removed from Case 17 NORMALLY OPEN CONTACT NORM ALLY CLOSED \ CONTACT "-VOLTAGE BARRER --- SPRNG LEAVES FOR MOVNG CONTACTS POLE PtEC E

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18 ST-12/93 (6000) General Electric Company 205 Great Valley Parkway Malvern, PA Meter and Control Business Department