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List of Device Numbers: s/ w; W( R1 I3 Y; l/ q1 M- i
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5 D- u* r( ~- U v) d/ T( s, R2 x5 N! Y1 X6 h/ G
* 1 - Master Element2 J. n4 \0 h, |* ^6 F4 n* U3 t
* 2 - Time Delay Starting or Closing Relay
; x3 g; y+ q. a; | * 3 - Checking or Interlocking Relay* }8 c% {* ]. w- q. X% u
* 4 - Master Contactor: S8 v# u5 B/ c, h: z2 C, Z
* 5 - Stopping Device
; U W) ^! h1 V4 g/ D+ a * 6 - Starting Circuit Breaker
; ` M% |1 d ] * 7 - Anode Circuit Breaker9 i: K* w+ R$ q
* 8 - Control Power Disconnecting Device z, L$ [, M, A8 b' m4 }
* 9 - Reversing Device+ o5 i" t, P+ i; i- P7 g
* 10 - Unit Sequence Switch
$ `; M4 e" {0 \$ V" F- M/ q/ c * 12 - Overspeed Device
! M2 O) t) m- V2 K * 13 - Synchronous-speed Device Y' T# \. R1 a. |2 E w: B! t0 m5 z
* 14 - Underspeed Device" @6 e3 p8 r5 A+ Z4 c) g1 y
* 15 - Speed - or Frequency-Matching Device
/ ~, b' p+ T* ? * 21 - Distance Relay' |4 [/ E2 n# t2 ?; L5 m
* 23 - Temperature Control Device
1 w. w$ V( _& x: a& T8 ?# f * 25 - Synchronizing or Synchronism-Check Device
2 }+ F) X5 o; M5 ?1 ?/ z* x# k * 26 - Apparatus Thermal Device1 t5 w: Z1 ~. @' W) r0 K7 L
* 27 - Undervoltage Relay
3 {. m( E6 K( Q/ { * 29 - Isolating Contactor
/ C2 ?- n, g5 g5 t1 ]( f; L0 W. D * 30 - Annunciator Relay' w% X( U$ D! i% r% _( N
* 32 - Directional Power Relay4 L, F- J) N5 W
* 36 - Polarity or Polarizing Voltage Devices
# i5 L/ T8 C7 a( k * 37 - Undercurrent or Underpower Relay
7 m; C0 Q2 l" Y, ] * 38 - Bearing Protective Device8 O0 q- i5 Z% m- I
* 39 - Mechanical Conduction Monitor
$ X/ L4 b W) o. a5 L0 X * 40 - Field Relay0 V5 W4 j5 [5 L
* 41 - Field Circuit Breaker
0 t3 ?$ M( l% H s0 ]7 a3 T2 }6 } * 42 - Running Circuit Breaker6 P& K) t* c; q9 `
* 43 - Manual Transfer or Selector Device Y, x, U6 e* A$ Y8 k8 b1 ~+ D
* 46 - Reverse-phase or Phase-Balance Relay
; } ?) S* {! A * 47 - Phase-Sequence Voltage Relay4 x8 ]5 U/ K# f; B
* 48 - Incomplete-Sequence Relay) ]& q' c& j( u7 J0 O$ }8 E
* 49 - Machine or Transformer Thermal Relay! v B. Y* r3 _$ j
* 50 - Instantaneous Overcurrent
) y0 b0 v! ~7 f& `; \ * 51 - AC Time Overcurrent Relay7 Q; N3 M, v1 X' }) G
* 52 - AC Circuit Breaker; U( `' H2 B5 Z6 ?" L0 I
* 53 - Exciter or DC Generator Relay
, f; u7 C5 V7 a3 ~0 {4 o8 A3 E * 54 - High-Speed DC Circuit Breaker) E& T. I5 W, u% G
* 55 - Power Factor Relay
8 s% w: I' r7 f4 D) q8 j6 A * 56 - Field Application Relay4 s8 _- ~* w) {$ u/ s3 q# [
* 59 - Overvoltage Relay' S, X, \( I7 P6 P* F
* 60 - Voltage or Current Balance Relay$ S2 k6 `4 {" t# u/ |5 P, o" a
* 61 - Machine Split Phase Current Balance6 T. x3 z" d* F/ Y: G
* 62 - Time-Delay Stopping or Opening Relay. [% a$ r$ R* y) \' t' Z
* 63 - Pressure Switch
# I5 x% r- F- P `3 E$ L: l5 E * 64 - Ground Detector Relay! d& t8 V0 `3 h; E& W2 ~4 K: Z
* 65 - Governor
5 W( _( K$ Y5 V * 66 - Starts per Hour
1 O- Y& _1 H4 O8 e. g% t * 67 - AC Directional Overcurrent Relay
) F# Y e4 l) ^$ G8 s4 g * 68 - Blocking Relay5 Y) L) ?2 n5 e4 [# T6 o
* 69 - Permissive Control Device
: u) j) u! }: F& s% | * 71 - Level Switch
- v0 i5 a: d0 q# f% d4 h9 H! G * 72 - DC Circuit Breaker6 B; c0 E I8 p
* 74 - Alarm Relay( @3 v( z0 I8 b/ F; y! ^9 `! s
* 75 - Position Changing Mechanism- W' w. m* }* w" Z
* 76 - DC Overcurrent Relay
% T. G, h5 s8 R2 @+ U. @2 j7 l+ L * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
) E. @ ?+ {5 r& V7 f& C! h * 79 - AC-Reclosing Relay) {! d! ^- x' _9 K2 u4 `) G
* 81 - Frequency Relay$ c/ b; i+ _! U' _0 [8 R8 y3 U
* 83 - Automatic Selective Control or Transfer Relay% W. l" X: r! ~8 {8 r" X
* 84 - Operating Mechanism& {0 r# N' o( `! M/ f# k
* 85 - Carrier or Pilot-Wire Receiver Relay- l, _# ]$ n+ r7 \8 O
* 86 - Lockout Relay
# d/ a, p: h8 L6 e * 87 - Differential Protective Relay9 [ `1 [: n# h
* 89 - Line Switch6 s( a- a+ {. _* j' ?5 F
* 90 - Regulating Device
# q* [8 x# Z" c; Y2 F * 91 - Voltage Directional Relay" L8 Q4 S3 J4 i% N% e; q
* 92 - Voltage and Power Directional Relay3 i* j* l! |; J8 A
* 94 - Tripping or Trip-Free Relay' ^6 r( p4 F+ m
* 95 - Reluctance Torque Synchrocheck/ u. w3 c2 C& ~8 Z; k
* 96 - Autoloading Relay |
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