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List of Device Numbers2 ?* U6 d$ X/ Q7 Y. D
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* 1 - Master Element
. e: N( s% O! T! ] * 2 - Time Delay Starting or Closing Relay0 e( d. @5 k% l; S
* 3 - Checking or Interlocking Relay
+ k% r" ~& t* v; I& e * 4 - Master Contactor1 ~ a$ H$ }& j) G* k8 }; Z( Y
* 5 - Stopping Device5 D C0 z; ]" F, b+ d/ A
* 6 - Starting Circuit Breaker. T( \0 J' D* j9 Y3 C
* 7 - Anode Circuit Breaker
4 A8 F1 t( q2 G6 d% K E. p * 8 - Control Power Disconnecting Device
( `$ e4 Q/ j* R; k, d" P * 9 - Reversing Device1 ?: O/ g' G0 v( ~3 m
* 10 - Unit Sequence Switch1 G; U1 ]/ W6 n
* 12 - Overspeed Device6 V* o# c: P, U `2 a
* 13 - Synchronous-speed Device
8 m c6 a; d" }! H! S4 N, u0 Z/ V7 H * 14 - Underspeed Device# }$ L0 d) `- p$ O
* 15 - Speed - or Frequency-Matching Device* Z+ V) j. Y( v j: U0 z8 {9 W
* 21 - Distance Relay9 {2 i/ |3 j* {. `! `3 Y
* 23 - Temperature Control Device
) F' R5 o7 a+ f! C * 25 - Synchronizing or Synchronism-Check Device
' S% I, [+ g1 L" Q" W8 [ * 26 - Apparatus Thermal Device9 q7 g5 t6 B: P/ l$ T U: J2 y# g
* 27 - Undervoltage Relay' s/ W- e, E- ^7 w; T ^* W
* 29 - Isolating Contactor
% q g7 h6 ?& ~; _1 J * 30 - Annunciator Relay
& e. H% P0 O, `0 z* }3 f * 32 - Directional Power Relay
7 u$ T, J* S5 I+ p3 ~/ t# r+ y * 36 - Polarity or Polarizing Voltage Devices: @2 v: m& P0 _2 o
* 37 - Undercurrent or Underpower Relay
) q: [$ \, C8 q+ y3 b$ U * 38 - Bearing Protective Device
H- q* b' p! i$ B8 h4 S7 D * 39 - Mechanical Conduction Monitor
! a: M/ E6 z1 y- v$ z$ m * 40 - Field Relay* [. r* F1 B' y9 L% a' h
* 41 - Field Circuit Breaker
8 @& {( ^8 ~& l& d7 g' |. s * 42 - Running Circuit Breaker
) d$ R4 f- `; q * 43 - Manual Transfer or Selector Device$ Q' ^. B# h# q, @/ B1 z
* 46 - Reverse-phase or Phase-Balance Relay: ~2 N8 s7 r" L2 h5 b! R
* 47 - Phase-Sequence Voltage Relay
8 I3 k- h- {: z" h" Z8 \ r8 a/ N * 48 - Incomplete-Sequence Relay
& ` q3 f% S% V) t* [+ V * 49 - Machine or Transformer Thermal Relay4 R8 }% y9 M) {$ b4 o3 l5 G* I1 e
* 50 - Instantaneous Overcurrent# b' p! C$ H: I# A3 d, {9 i
* 51 - AC Time Overcurrent Relay
; r# b/ m1 _7 ~& @- Z1 E * 52 - AC Circuit Breaker2 Z, ^1 J% a/ Z. k5 {, R4 H
* 53 - Exciter or DC Generator Relay8 H- G1 A/ i, b
* 54 - High-Speed DC Circuit Breaker
# n. A5 u! m2 z * 55 - Power Factor Relay
' {$ o9 S$ x) O- i& b7 w/ X1 n' g2 e, t * 56 - Field Application Relay; Q" g% }( N& y! P& ?! C( u& z
* 59 - Overvoltage Relay9 n/ B2 j. B' M7 B O
* 60 - Voltage or Current Balance Relay3 P6 O. b7 Q7 r! c7 f% J; b0 d0 e1 H! x
* 61 - Machine Split Phase Current Balance
! k2 n2 e- T: F1 w( |- x * 62 - Time-Delay Stopping or Opening Relay
+ H. m! N* Y) F. M+ J * 63 - Pressure Switch
% j+ h# N7 m) \; j! K * 64 - Ground Detector Relay+ s9 a4 H6 r' d5 N
* 65 - Governor) T7 x: a9 N- } m/ ?
* 66 - Starts per Hour
6 c7 z# o+ T! e1 p5 W: [2 i6 o * 67 - AC Directional Overcurrent Relay( t& n3 d4 p$ r
* 68 - Blocking Relay. j: C# l$ e6 m! m; Q
* 69 - Permissive Control Device
' X& c% N, v" @, C * 71 - Level Switch
0 D( I6 f# b% Z1 G* v L * 72 - DC Circuit Breaker/ W' x: a3 e0 v5 \0 X7 T
* 74 - Alarm Relay
; J( r1 p$ y7 e! ?* X/ [6 M * 75 - Position Changing Mechanism' c3 d7 O% [2 J
* 76 - DC Overcurrent Relay3 Z. U+ I% o" j% b
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
0 O5 h8 X H4 U, B! {- o P) ` * 79 - AC-Reclosing Relay' C" r, C- J* h3 W/ X: D
* 81 - Frequency Relay0 T" V0 }8 q5 F8 r7 A M, d
* 83 - Automatic Selective Control or Transfer Relay# \$ G# n: u9 |/ p; p% L
* 84 - Operating Mechanism
$ J7 I+ B6 h0 q7 W5 g3 t- \ * 85 - Carrier or Pilot-Wire Receiver Relay
% l1 e* g& p; h5 Z$ y; b/ V * 86 - Lockout Relay
( |: O2 ]* z4 ^' I * 87 - Differential Protective Relay3 `! V! Q# `, V$ g
* 89 - Line Switch
1 H1 k/ r- G- m6 G6 i- ` K- G * 90 - Regulating Device
# N5 O0 v) w& A2 m * 91 - Voltage Directional Relay
. U7 A, z9 i3 z$ P2 }, U& g/ x * 92 - Voltage and Power Directional Relay1 D: ]( |# J/ F1 E/ H: y, |
* 94 - Tripping or Trip-Free Relay( @- ~- N3 J: p7 M9 V
* 95 - Reluctance Torque Synchrocheck% P7 R8 w$ [9 }5 W' o; \9 z v, |
* 96 - Autoloading Relay |
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