GE SPA11A Instructions Manual
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GE SPA11A Instructions Manual

GE SPA11A Instructions Manual

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INSTRUCTIONS
STATIC PILOT WIRE MONITORING RELAY
TYPES:
SPA11A
SPA11B
SPA12A
SPA12B
GEK-65512F
GE Protection and Control
205 Great Valley Parkway
Malvern, PA 19355-1337

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  • Page 1 GEK-65512F INSTRUCTIONS STATIC PILOT WIRE MONITORING RELAY TYPES: SPA11A SPA11B SPA12A SPA12B GE Protection and Control 205 Great Valley Parkway Malvern, PA 19355-1337...

  • Page 2: Table Of Contents

    GEK-65512 CONTENTS PAGE ............INTRODUCTION APPLICATION .

  • Page 3: Introduction

    AC signal by low-pass filters. SPA models are available for use with 50 hertz and 60 hertz SPD relays. The Types SPA11A, SPA11B, SPA12A and SPA12B are each packaged in the S2 drawout case, the outline and panel drilling of which is shown in Figure 11.

  • Page 4: Options And Features

    GEK-65512 receiving-end relays in the open position. An open pilot wire will result in the closure of the UC contacts and operation of the UC LED at both the sending and receiving ends. A shorted pilot wire, resulting in a significant increase in the monitoring current, will result in closure of the contacts of the overcurrent (OC) function and operation of the OC LED in the sending-end relay, and the closure of the UC function contacts at the receiving end.

  • Page 5: Ratings

    GEK-65512 An open pilot wire will result in undercurrent detection; a shorted pilot wire will result in overcurrent detection, and ground on either conductor of the pilot wire will result in ground detection. RATINGS TEMPERATURE These relays have been designed for continuous operation in ambient temperatures between -20oC and 55oC per ANSI Standard C37 .90-1978.

  • Page 6: Target Seal-In Unit

    GEK-65512 TARGET SEAL-IN UNIT The target seal-in unit connected to studs 1 and 11 in the SPA 11 B and SPA 12B relays has the ratings and characteristics shown in Table Ill. TABLE Ill RATINGS AND CHARACTERISTICS OF THE TARGET SEAL-IN UNIT DC Resistance 10% (Ohms) 0.13...

  • Page 7: Open Pilot Wires

    GEK-65512 TABLE IV UNDERCURRENT DETECTION LEVELS RELAY ARRANGEMENT UNDERCURRENT DETECTION 2 Terminal 0. 53 rna or less Receiving End 2 Terminal 0.43 rna or less Sending End Terminal 0. 53 rna or less Terminal 0.21 ma or less SHORTED PILOT WIRES The overcurrent units in the SPA relays are normally de-energized (or dropped out).

  • Page 8: Transfer Trip

    GEK-65512 TABLE V APPROXIMATE OPERATING TIMES PILOT WIRE CONDITION DETECTION TIMEt RESTORE TIME tt UNIT 300 msec. 2000 msec. Open Circuit Short Circuit 300 msec. 700 to 2000 msec. Grounded Conductor 300 to 500 msec. 400 to 800 msec. Detection time of each function is the time to close its contact upon the occurrence of the condition listed in the table.

  • Page 9: Low Pass Filter

    The table below indicates the burdens of the SPA relays on the DC station supply under normal operating conditions. TABLE VI DC BURDENS WITH TTA ENERGIZED 48 V 48 V SPA11A 60 ma 25 ma 30 ma SPA11B 60 ma 25 rna...

  • Page 10: Construction

    GEK-65512 The receiving-end relays (SPA 12A and SPA 128) must be set for a two-terminal application or a three-terminal application. This entails the positioning of a selector on the printed-circuit board. The target seal-in unit tap setting should satisfy the following two requirements : 1) the minimum trip-circuit current should be enough to operate the target seal-in (at least 150% of tap is recommended);...
  • Page 11 PRINTED CIRCUIT BOARD INFORMATION TRANSFER FRONT VIEW ASSEMBLY TRIP RELAY : PC Board NUMBER 50/60 POSITION LED INDICA TORS CIRCUITRY SPA11A: PCB-1 0184B8614 G2/G1 Left Slot (1} Power Supply (Yellow) SPA 11A: PCB-2 0184B8617 G2/G1 Right Slot {3) UC, OC, GND {All Red)

  • Page 12: Receiving, Handling And Storage

    ASSEMBLY HZ FRONT VIEW TRIP 50/60 POSITION LED INDICATORS CIRCUITRY RELAY: PC BOARD NUMBER SPA11A: PCB-1 0184B8730 G2/G1 Left Slot ( 1) Power Supply (Yellow) (3) UC, OC, GND (All Red) SPA 11A: PCB-2 0184B8617 G2/G1 Right Slot 0184B8730 G4/G3...

  • Page 13: Visual Inspection

    GEK-65512 VISUAL INSPECTION Check the nameplate stamping to make sure that the model number and rating of the relay agree with the requisition. Check that the model number on the label in the back of the case agrees with the nameplate. Remove the relay from its case and check that there are no broken or cracked molded parts or other signs of physical damage, and that all screws are tight.

  • Page 14: 250 Dc Rating

    GEK-65512 250 DC Rating The 250 DC rating is accomplished with an external pre-regulator, 0138B7511G2 and G3. The pre-regulator is a DC-to-DC Convertor that reduces the 250 VDC station voltage to the 125 VDC rating of the SPA relay. Therefore, when this pre-regulator is used, the SPA relay DC pins on the 125 volt position.

  • Page 15: Receiving End

    GEK-65512 Connect a 24,000 ohm external resistor {rated 1/4 watt) between studs 7 and 8. Be sure that the DC voltage link above the target seal-in unit is in the proper position.Apply 75% of rated voltage to studs 4 {positive) {+) and 5 (negative) {-) and to studs 19 (positive) (+) and 20 (negative) (-).

  • Page 16: Hipot Tests

    While this method does not test the relay to its full dielectric rating, it will detect some cases of degraded insulation. TABLE IX CIRCUIT GROUPING FOR TRANSVERSE MODE HI POT TESTS TERMINALS OF CIRCUIT GROUPS RELAY SPA11A a. 4,5 b. 7, 8 c. 9, 10 d. 12, 13 e. 14, 15 f.

  • Page 17: Restoring Relay To Service

    GEK-65512 RESTORING RELAY TO SERVICE After the hipot testing is completed, the surge capacitors should be reconnected to the surge capacitor buses, the surge capacitor buses reconnected to studs 6 and 16, and all external wiring to terminals 6 and 16 (surge ground) should be reconnected. INSTALLATION PROCEDURE Mount the relay vertically in a clean, dry and well lighted place to allow accessibility for cleaning, inspection and testing, and where it will not be subjected to excessive...

  • Page 18: Periodic Checks And Routine Maintenance

    GEK-65512 PERIODIC CHECKS AND ROUTINE MAINTENANCE WARNING: HIGH VOLTAGES MAY APPEAR ON PILOT WIRES UNEXPECTEDLY AT ANY TIME. USE APPROPRIATE CARE WHEN MAKING CONTACT WITH PILOT WIRES OR EQUIPMENT CONNECTED TO THEM The pilot wire protective equipment, if installed, is designed to limit the pilot-wire voltages to a level that will not damage the wires or equipment connected to them.

  • Page 19: Servicing

    GEK-65512 SERVICING CAUTION: ALL power from the relay before removing or inserting any of the printed-circuit boards. Failure to o bserve this caution may result in damage to and/or misoperation of the relay. Adjustment of telephone relays requires skill and experience for best results. The following guidelines may be of assistance.
  • Page 20 GEK-65512 CAUTION: Great care must be taken in replacing components on the cards. Special soldering equipment suitable for use on the delicate solid-state components must be used and, even then, care must be taken not to cause thermal damage to the components, and not to damage or bridge over the p rinted circuit buses.

  • Page 21: List Of Illustrations

    GEK-65512 LIST OF ILLUSTRATIONS TITLES OF FIGURES Internal-Connections Diagram for Type SPA 11A Relay Internal-Connections Diagram for Type SPA 11 B Relay Internal-Connections Diagram for Type SPA 12A Relay Internal-Connections Diagram for Type SPA 12B Relay Internal Connections for printed circuit board in position PCB-1 in SPA 11A (No rev.
  • Page 22 GEK-65512 - - - - - - - - - l lrGN O SURG E G ROU N o10 � JUMP� EXTERN�L SUPPLY.; POWER DETECTION CO NNS. 018488714 DETECTION CONNS. INT. 018488717 SHORT *=FINGER C 33 36:39: .OSu f C 2fJ Figure 1 {0275A3240-0) Internal Connections Diagram for Type SPA 11A Relay...
  • Page 25 GEK-65512 S U RG E C + ) GROU N D ' ..� �(-) EXT ER NA L JUM P ER V\I H E N U S EV POW E R SUPPLY D E T E C TOR B D .
  • Page 26 ., ., "' \0 ;:t.• ..BATT. li'9.3 12VJ I � > & � oo C R 7 I C R S 'l 2 4 1126 C R I 2 t o OK 301K R !> )> � -c -...l "'"...
  • Page 27 � A 1 1 A2 1 l u F - · · :;, c C 1 5 ., .., O tt> :. v 9K � ���K l50K !:t. o­ .tOOK � - V1 C 1 B < 75 . 0K :::J o 0 1 3 0 1 4 _...
  • Page 28 0 � s · "TI - · �£J '"'0 a;, c R 4 1 !(4 5 = LM224 N l't) PI N +V,PI N I I - G N D �OOK ;:, _ 2 N 2222A &,7, 2 N 2907 Q 8 = ., ..
  • Page 30 A l l R 2 1 A 1 7 R 1 "'i R 1 6 49 . 9K 411 . 991< 75 . 01< 1501< 100K C I S SOt< R 1 9 3 0 1 1< - · (0 O tb ., .., R30 �...
  • Page 31 "'0 ;:, ::!! ""'(Q n c: tD .., • IC4, S : L M 224 � 00 P I N 4 +V, P I N � Gl\0 ;:, _ � 4 7 V\ 0 C R.I9 - 30 36 - 39 4�...
  • Page 32 -· :n :;, U) 0 .., "'ti C (-o- ) ;:t: \0 BATT. :;, _ I< C)" �:�> ""0 > 6 � ( t 12 V ) g � · � � 00 - · .., _.Rl_ V'I V1 :;, _.
  • Page 33 C I O A 2 1 C 1 5 A 1 9 7 5 . 0K A l 4 7 5 . OK R I B 3 0 0 3 0 1 K 60 . 4K R2 4 7 5 . OK C 1 6 C 1 7 T P 2...
  • Page 34 -· "T1 - · -gt.C 0 � �. 11) �. _,a ( + ) BATT. R 9 3 =:;, QI (t 1.2. \/ ) 5-"- -o ­ •oo .n. CXJ ...a > 4 � � T P I -· CXJ :;, oo 1 8 0 K V'I "'-J...
  • Page 35 � 6 1 0 0 C 1 0 1 u F A 1 4 A 2 1 C 1 5 A 1 B A 1 9 7 5 . OK C 1 4 7 5 . OK 3 0 0 �...
  • Page 36 GEK-65512 P A N E L L O C A T I O N 5 / 1 6 - 1 8 S T U D S S U R F A C E M TG . SEM I - F L U S H S U R F ACE 6 .
  • Page 37 GEK-65512 T I M E O F T TA U N I T vs S U P.PL Y VOL TA'E OP ERAT I NG VOLT CURVE VOLT C U R V E � '�' � � <( 1 1 0 1 20 RAT E D P ER C E N T...
  • Page 39 GEK-65512 T E ST P LU G I N SE RT E D I N T O P B LO C K TEST P LUG I N S E R T E D I N B O T TOM s@ 10 �) 2 ( 2) BLOCK RAT ED DC...
  • Page 40 GEK-65512 1 1 @ P L U G T E ST I N SE R TED I N TO P B LO C K I @ 3@ TES T P L U G I N S E RT E D I N B LO C K Fig u re 1 7 0275A3 8 1 7-0) Test Plug Con nections for SPA 1 1 B Transfer Tri p Acceptance Test...
  • Page 41 GEK-65512 RAT ED DC (-) CON T ROL ( t J VOL TAG E !::\ TEST P LU G '---- -- -- / I N SERTED I N B OT TO M B LO C K 1 0 @ Fig u re 1 8 ((027SA3 8 1 8- 1 ) Test Plug Connections for SPA 1 2A a nd 1 28 UC Acceptance Test T E 5T PLUG I N S E RT E D IN...
  • Page 43 9. :!! .., \0 t1> c:: � .., o .., - · ;:, w -t - .., 0 �1 Ql _. .. � " · S E E N O T E GO SEE N01E 6 ::J w ·· - - ·...
  • Page 44 Protection and Con trol GE Technology Center Protecti o n and Control 205 G reat Val l ey Parkway Ma lvern, Pennsylvania 1 9355- 1 337...

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Spa11bSpa12aSpa12b

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