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List of Device Numbers* R8 T2 ?. c& o, L1 c8 R* K
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* 1 - Master Element
+ E- X: U& m' f5 W * 2 - Time Delay Starting or Closing Relay T9 G" d2 N6 c
* 3 - Checking or Interlocking Relay
6 L4 R! Y7 e- x * 4 - Master Contactor' C- v' R9 L! z X
* 5 - Stopping Device* d' e3 B7 z1 Q
* 6 - Starting Circuit Breaker
9 U3 D. a8 o% ]4 j$ ~ * 7 - Anode Circuit Breaker, l. n" H) U; P2 b5 E: v. K, M/ @8 c: B
* 8 - Control Power Disconnecting Device/ M$ s: c6 Y- H6 H' G
* 9 - Reversing Device
: l! g0 V/ I" w4 H7 B * 10 - Unit Sequence Switch
/ C/ `; |9 {, o7 B * 12 - Overspeed Device
2 I9 R) j- Q! B' T * 13 - Synchronous-speed Device
! ~- W! S( L' K3 j+ f* ]1 G X9 k * 14 - Underspeed Device ?* f0 K: M" S3 C% v" m% ~
* 15 - Speed - or Frequency-Matching Device/ ?4 |) N m; c
* 21 - Distance Relay* ~. U* C7 R. V
* 23 - Temperature Control Device
J9 T5 ?! V" X* z6 {$ [1 c * 25 - Synchronizing or Synchronism-Check Device
" r; ]; J ^9 T1 E * 26 - Apparatus Thermal Device
. s3 E; K0 s0 E. s! }( E; Y * 27 - Undervoltage Relay, b8 o$ D" j: d: _' Y& W
* 29 - Isolating Contactor
$ `6 {# O+ n r$ i * 30 - Annunciator Relay
4 H# P$ r/ k2 F' A * 32 - Directional Power Relay
/ V( d. w1 u% g. C * 36 - Polarity or Polarizing Voltage Devices0 K& |, F/ ?# e- b
* 37 - Undercurrent or Underpower Relay
, M" J4 ]8 {; w" u * 38 - Bearing Protective Device' s' K( P6 M3 t! L' s
* 39 - Mechanical Conduction Monitor% C0 l, [* B/ M7 D
* 40 - Field Relay
, L8 C6 P$ P# Z1 S% j * 41 - Field Circuit Breaker8 \; h" W" u% l. i0 e7 }+ T- F( V
* 42 - Running Circuit Breaker
( ]. R4 m5 n: Q }; H& D; b. P * 43 - Manual Transfer or Selector Device+ H( d0 E1 y+ v I7 X7 U
* 46 - Reverse-phase or Phase-Balance Relay
' z/ z) V. |2 a. c3 E" B( U * 47 - Phase-Sequence Voltage Relay2 K4 ]* t, j. c. k5 ]& {" b- l: J
* 48 - Incomplete-Sequence Relay# n* m7 m& W# p
* 49 - Machine or Transformer Thermal Relay
, H; ?2 k. ]$ B0 |0 U * 50 - Instantaneous Overcurrent
+ I, v, J3 f, J2 t! ?7 G * 51 - AC Time Overcurrent Relay
$ z+ H! h; E& V1 ~1 m2 x2 A0 p * 52 - AC Circuit Breaker' }" E+ w" i+ q1 M
* 53 - Exciter or DC Generator Relay9 {) `/ n; m6 Q# C& r) T4 S7 \
* 54 - High-Speed DC Circuit Breaker
% U% F' o; G! A5 p * 55 - Power Factor Relay
+ I9 T$ {6 \1 o4 z3 L4 `- F; v * 56 - Field Application Relay s8 Z) d9 n0 s0 N! X
* 59 - Overvoltage Relay/ V' b' a! @) U5 D
* 60 - Voltage or Current Balance Relay
" y0 R o$ _. P! E* l( K * 61 - Machine Split Phase Current Balance& [6 c; v7 y3 U. g: _9 H
* 62 - Time-Delay Stopping or Opening Relay
+ J+ a6 M) `$ c' Q& Q9 B; ] * 63 - Pressure Switch
K. i0 Q) m) M) w! Z m3 t- m J% c * 64 - Ground Detector Relay
1 l: F. }* ?7 D# ~, x * 65 - Governor! V0 i1 A2 a& C) x4 I
* 66 - Starts per Hour
+ \ ?) Y% e& [, g7 P0 ~: x * 67 - AC Directional Overcurrent Relay
! s z+ N* Z& P% q1 C * 68 - Blocking Relay8 z7 {2 S# F+ y
* 69 - Permissive Control Device
, z: E, |6 U+ l' e * 71 - Level Switch
, ?! K/ u, I- F% } * 72 - DC Circuit Breaker
8 k; G4 Z/ H, x% p/ U * 74 - Alarm Relay; ~& b. g1 ^* l2 g
* 75 - Position Changing Mechanism/ Z: `, D1 B" O3 O8 W
* 76 - DC Overcurrent Relay" K! z0 R, X* b: L. H
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay( x% b- h& K4 k9 ^8 T; @; V
* 79 - AC-Reclosing Relay
1 z, {# i3 t3 U * 81 - Frequency Relay
8 O! K) o, V% S& c * 83 - Automatic Selective Control or Transfer Relay: d, g5 A4 |" O
* 84 - Operating Mechanism
8 o; e& e# P: q+ z% k5 F* _ * 85 - Carrier or Pilot-Wire Receiver Relay
3 B" l1 _! ]' T" Q' K3 e * 86 - Lockout Relay$ E( w/ l8 R" L3 l, E8 L$ h6 ]* q
* 87 - Differential Protective Relay, |. S3 J: y2 o! H9 G
* 89 - Line Switch
) {9 ^. U& l; x4 K f+ X4 a! D9 _0 b * 90 - Regulating Device
/ g. J- G8 L# {' A1 B5 }+ ?4 l * 91 - Voltage Directional Relay M7 A x5 y( f4 k
* 92 - Voltage and Power Directional Relay% i7 O3 G8 B9 V7 p& |
* 94 - Tripping or Trip-Free Relay
1 b4 k' S" E1 c * 95 - Reluctance Torque Synchrocheck
1 ~/ n( P5 b+ h/ }! r# a * 96 - Autoloading Relay |
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