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List of Device Numbers
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* 1 - Master Element. b! \) Z: {# ]. X4 S2 V
* 2 - Time Delay Starting or Closing Relay. V9 o' K7 q. ^9 r
* 3 - Checking or Interlocking Relay" A. ~! K3 O$ _* u
* 4 - Master Contactor
' w3 I- L. |0 p+ @ * 5 - Stopping Device4 I, ?9 Z. A( h7 X
* 6 - Starting Circuit Breaker/ v+ v6 [( t& j8 t5 Y/ Z5 P
* 7 - Anode Circuit Breaker
6 T% f# V. {2 Q+ P * 8 - Control Power Disconnecting Device- x, U6 Z! B' B `3 _ y9 Q
* 9 - Reversing Device
3 \- \/ R1 W8 W1 }9 t+ ~9 \ * 10 - Unit Sequence Switch( \& x2 u% y% l
* 12 - Overspeed Device
. j. h' a7 b# X) G8 J * 13 - Synchronous-speed Device& V3 p$ W$ M4 f( Z& y
* 14 - Underspeed Device. O8 \: M5 d% } m+ Y! {( s0 [
* 15 - Speed - or Frequency-Matching Device
" B. x: V1 Z/ E4 r' l# X& t * 21 - Distance Relay2 e; v2 T, d3 u" i* |( K2 C
* 23 - Temperature Control Device+ }* E% l0 M5 m0 l) R% I! E: X0 i
* 25 - Synchronizing or Synchronism-Check Device
' H0 ^( T& Z# ^. J * 26 - Apparatus Thermal Device2 q/ }# a1 ~& b% Q# ?! q& J' V. K
* 27 - Undervoltage Relay
r8 _* B1 K, R" i( M1 U/ `: J * 29 - Isolating Contactor4 j" t! W5 z+ l2 U4 _
* 30 - Annunciator Relay4 P! ~7 p9 t) }" e* i
* 32 - Directional Power Relay
0 l# D0 G" f0 ^' f& k2 W * 36 - Polarity or Polarizing Voltage Devices( T A; J8 R2 z0 f
* 37 - Undercurrent or Underpower Relay
/ R8 B3 T! Q) @- ]" D9 t& k& T) P * 38 - Bearing Protective Device
& t7 A) b% u+ W( ~' z * 39 - Mechanical Conduction Monitor) X( F7 A$ X5 |( F
* 40 - Field Relay
# l. X+ s! Y/ Y$ n$ j& g, Y x0 O * 41 - Field Circuit Breaker3 Y7 T; M& `0 z( g
* 42 - Running Circuit Breaker
# p5 ~5 v8 j5 f* A! S * 43 - Manual Transfer or Selector Device
! q$ _( H& K7 e" |5 X( t * 46 - Reverse-phase or Phase-Balance Relay
6 B4 y! R: t+ H* { * 47 - Phase-Sequence Voltage Relay }) M; ?0 b& C. M% @% G5 ~0 ]) `
* 48 - Incomplete-Sequence Relay+ `+ I* p. J/ W& T: n+ t; n
* 49 - Machine or Transformer Thermal Relay. y+ r p* F G0 M+ l V
* 50 - Instantaneous Overcurrent
* ]% F* M) c0 |1 x1 {( H/ d/ E, H0 f * 51 - AC Time Overcurrent Relay3 K/ ?& X/ J$ \
* 52 - AC Circuit Breaker
8 a- [& N$ g) [! \8 P * 53 - Exciter or DC Generator Relay
3 ~, u; Y, K: e$ ` * 54 - High-Speed DC Circuit Breaker5 Q/ s$ L: z- Z- e& W
* 55 - Power Factor Relay) H' b6 y/ _# O9 ~# t9 `
* 56 - Field Application Relay
# D- a- s6 f6 i" q- R& R B1 v7 ~ * 59 - Overvoltage Relay2 j6 h/ ~ m2 a/ @
* 60 - Voltage or Current Balance Relay
4 b$ B+ g! \ z, b6 z* N * 61 - Machine Split Phase Current Balance2 p1 V" |; i8 B, u. Q( _) ^
* 62 - Time-Delay Stopping or Opening Relay
. _' d) g9 q: G) _6 ]+ J& } * 63 - Pressure Switch( [5 v& \0 i* Q R
* 64 - Ground Detector Relay, Y8 \0 ^; r- j2 X" [/ |
* 65 - Governor
1 O! \: f0 D6 ]- Z7 w# t, r * 66 - Starts per Hour
0 |3 w- B+ z" M9 H) q7 T) o * 67 - AC Directional Overcurrent Relay
/ x/ H6 y" B* v: L * 68 - Blocking Relay- h' A- B) N2 D0 j$ P% u) T
* 69 - Permissive Control Device. Z( u' x$ Q U7 J/ b
* 71 - Level Switch5 s! C3 z; v; C5 {
* 72 - DC Circuit Breaker! t2 v8 I* S" ~# Y5 J
* 74 - Alarm Relay
. U3 h, f/ A' J6 F$ G, N5 P( ]1 q * 75 - Position Changing Mechanism+ R" p3 p6 ~& B1 H1 Q+ K
* 76 - DC Overcurrent Relay- R2 y0 E$ |, p. T& ]3 D
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
, Q% |4 p1 B, w3 A9 _ * 79 - AC-Reclosing Relay$ h) A b ]0 D
* 81 - Frequency Relay
2 ]& J$ x; I( c9 w0 D) r * 83 - Automatic Selective Control or Transfer Relay
6 o1 d( |$ K5 y4 X4 h * 84 - Operating Mechanism
5 [6 G9 B, A! v5 n- B+ a * 85 - Carrier or Pilot-Wire Receiver Relay
& S! ^) S3 c* Y5 ^ * 86 - Lockout Relay
2 O8 q* _/ G Q2 a- A! r$ _, K, C * 87 - Differential Protective Relay
4 z* ~% ^( l! X8 V8 \ * 89 - Line Switch: _2 |8 v0 d4 ]" _- u
* 90 - Regulating Device
+ { F, Z+ p3 `! T# ~ * 91 - Voltage Directional Relay
% l2 U( H8 B3 B- g( y * 92 - Voltage and Power Directional Relay8 m; h! O- F1 ^$ |
* 94 - Tripping or Trip-Free Relay$ W8 |: p5 u5 X6 A, t+ y
* 95 - Reluctance Torque Synchrocheck. T+ }2 b, P: i/ k* T3 W5 Y
* 96 - Autoloading Relay |
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