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List of Device Numbers
M! Q! Y" x( _3 K9 bClick to learn more... V2 N/ R$ L4 ^8 }$ y0 ^
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* 1 - Master Element# ]! H( \9 n$ b2 P
* 2 - Time Delay Starting or Closing Relay* f! O& A) |: G8 l2 e! F( c" @) V
* 3 - Checking or Interlocking Relay! O" A" U$ n" g
* 4 - Master Contactor5 X: x/ E) E9 O# q
* 5 - Stopping Device
& U) q7 q' F! ~ * 6 - Starting Circuit Breaker5 [& H, B8 W' X- ?& v$ o: U, l
* 7 - Anode Circuit Breaker3 t: i9 _, [5 l
* 8 - Control Power Disconnecting Device
8 L7 ]/ x( _9 q) h * 9 - Reversing Device
, o- O* o) s- h- r * 10 - Unit Sequence Switch( X: ~% l) i2 b
* 12 - Overspeed Device! F1 I R6 M' X) J
* 13 - Synchronous-speed Device( V) S5 x' V* p' a% D4 Y
* 14 - Underspeed Device. S4 e% A! W7 N
* 15 - Speed - or Frequency-Matching Device p2 \# z' g6 |0 f' L
* 21 - Distance Relay
; d/ z1 D6 [2 f' O3 X * 23 - Temperature Control Device6 M3 g' ?) P" V' O& ^
* 25 - Synchronizing or Synchronism-Check Device
% r ]. V9 `. B( x! Y% E. ] P3 N5 U+ \ * 26 - Apparatus Thermal Device
3 n% R2 x" }/ O. r* ^ W * 27 - Undervoltage Relay
& O+ T) k2 ]1 d" f9 x: v8 {$ c( Y * 29 - Isolating Contactor: O% Z6 j2 L( e1 a4 ^, Q
* 30 - Annunciator Relay
, u5 a5 z$ ^ W$ s * 32 - Directional Power Relay ~1 ]8 `0 D' ~
* 36 - Polarity or Polarizing Voltage Devices3 q0 E) U. m& i; q7 p3 N
* 37 - Undercurrent or Underpower Relay i5 U9 I/ G1 u) [1 _
* 38 - Bearing Protective Device g# T/ r& o0 u" R
* 39 - Mechanical Conduction Monitor
M# X4 c+ R: ]7 V, R) @, d) s( O * 40 - Field Relay
1 c2 v2 c4 [6 x% G+ ^7 n * 41 - Field Circuit Breaker
( e, F# f' A0 H * 42 - Running Circuit Breaker; ^- s, l# W, @ N# v, y. G
* 43 - Manual Transfer or Selector Device
5 ]& ~# f% P& b6 j, q; a * 46 - Reverse-phase or Phase-Balance Relay
& }' S0 h) a! e * 47 - Phase-Sequence Voltage Relay6 v& L+ G" m/ q
* 48 - Incomplete-Sequence Relay7 z* x9 } L, i9 u8 y$ s& t2 f- x. V
* 49 - Machine or Transformer Thermal Relay! a: `/ w2 C7 p
* 50 - Instantaneous Overcurrent
2 ?8 l H) K2 c4 i. @3 w1 t * 51 - AC Time Overcurrent Relay
1 Y) y5 {3 u# F8 k8 h* k0 t * 52 - AC Circuit Breaker
2 w4 j3 y, c {0 o' K * 53 - Exciter or DC Generator Relay: C5 M0 q3 v( F7 v) j+ [" ^
* 54 - High-Speed DC Circuit Breaker
& I9 H. a0 B" D * 55 - Power Factor Relay
' }! @% W- W6 o. p1 } * 56 - Field Application Relay9 E o9 X1 R6 k. z, s1 H9 K1 s
* 59 - Overvoltage Relay
; x) N3 l) J; K; Y" F; [3 X * 60 - Voltage or Current Balance Relay- ?) F! s, ^ Y9 X& A
* 61 - Machine Split Phase Current Balance
! y& c' C! T+ q" |) U) ^) d * 62 - Time-Delay Stopping or Opening Relay# q' R7 u4 c/ q1 v5 e
* 63 - Pressure Switch
5 K; _" c9 J4 m( E* O- i( T( I$ C * 64 - Ground Detector Relay$ P7 t, H8 D) b& g$ {
* 65 - Governor
) w) Y, ~4 C. ~2 |- q * 66 - Starts per Hour
5 m, f: p0 U+ b9 Y * 67 - AC Directional Overcurrent Relay
( [, e4 i, T- M) ^9 I * 68 - Blocking Relay
; T$ B+ m0 F }3 O1 p% S * 69 - Permissive Control Device
4 v& C9 F9 `# Y- ]- B7 ~+ J * 71 - Level Switch. ]4 F' p( I6 [4 E; f1 w/ }8 L
* 72 - DC Circuit Breaker
$ w; t* l+ z4 V; y& t4 H * 74 - Alarm Relay
q5 E- D: D$ V2 i! ? * 75 - Position Changing Mechanism
9 d2 c3 |# V% E * 76 - DC Overcurrent Relay
+ x0 ]* m$ c' f% Z S/ y# S: c * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay2 {% H X% P9 ?( z
* 79 - AC-Reclosing Relay) y7 u; Z* l- k) Y
* 81 - Frequency Relay
6 b( Q2 S6 H$ A1 L2 U" f * 83 - Automatic Selective Control or Transfer Relay" D. a6 R% ^1 B+ ~, j7 T
* 84 - Operating Mechanism+ H% p8 T8 e; x' B4 M7 }
* 85 - Carrier or Pilot-Wire Receiver Relay: y9 j' \/ e* o# \4 S, ?/ c
* 86 - Lockout Relay
1 t8 V. Y* e7 G! L5 W7 {6 J * 87 - Differential Protective Relay
0 E) O) c; P6 g+ s * 89 - Line Switch
o" r& K/ p8 a' k f2 D * 90 - Regulating Device
9 ] ?$ n( a/ e* q5 L# B X * 91 - Voltage Directional Relay, D( V( [! n' P# k5 o0 I
* 92 - Voltage and Power Directional Relay) T* ]" u3 W. ~8 D8 T% [! T2 [
* 94 - Tripping or Trip-Free Relay6 T: C( g6 Q0 `
* 95 - Reluctance Torque Synchrocheck
1 k2 s/ V1 s3 J. D [ * 96 - Autoloading Relay |
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