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List of Device Numbers
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* 1 - Master Element
4 k$ J& g! e' C1 s3 k * 2 - Time Delay Starting or Closing Relay
$ z) d7 Q$ g5 _# e. ^# G2 O+ k9 m * 3 - Checking or Interlocking Relay7 S8 O& w5 k: ^; R' h# T
* 4 - Master Contactor; H# I& f4 K# _, z% A
* 5 - Stopping Device
, i* m8 ^8 a: J% `, y# W7 M! G; p * 6 - Starting Circuit Breaker
7 x3 c) d+ J( B9 i * 7 - Anode Circuit Breaker) t( j, t i* n* h2 o8 E! C
* 8 - Control Power Disconnecting Device# d+ E0 ?6 _6 h9 |" X' P
* 9 - Reversing Device
4 v" t' g0 l, Y' h * 10 - Unit Sequence Switch& J X/ v% U% x& t
* 12 - Overspeed Device) m2 W* @% m9 A3 H; J" ~
* 13 - Synchronous-speed Device6 K9 e4 g" `8 v4 ~
* 14 - Underspeed Device
: K, q; L5 z4 | * 15 - Speed - or Frequency-Matching Device9 ]/ B" Y- v* Y A4 }+ o; v
* 21 - Distance Relay
; g X5 F; K* c$ q; ]6 T * 23 - Temperature Control Device6 w9 r1 B8 \9 T9 N3 w
* 25 - Synchronizing or Synchronism-Check Device+ `5 }# M- p! o% {+ C$ Z) q
* 26 - Apparatus Thermal Device8 v, I$ Q% v+ u7 z, @! u4 y* D
* 27 - Undervoltage Relay' n) j8 ^7 n$ K! [: T
* 29 - Isolating Contactor
+ {' k) a) n6 n B+ ], Q9 t * 30 - Annunciator Relay
. m3 n8 L6 D! `/ o * 32 - Directional Power Relay
3 }: ^" b) L& ^( \. v * 36 - Polarity or Polarizing Voltage Devices- ]* K1 K2 }- t$ d2 ^% ~
* 37 - Undercurrent or Underpower Relay
! _; L- G; h) o E * 38 - Bearing Protective Device
( O' k+ |; I2 e1 q& S' G6 |2 T) z# c * 39 - Mechanical Conduction Monitor; a ^4 M% R. e. L C
* 40 - Field Relay' P1 \7 A& Y+ C/ x9 d
* 41 - Field Circuit Breaker! e" h4 @ o* N* t7 `
* 42 - Running Circuit Breaker* w; D' h5 L$ i H9 h. ~6 G
* 43 - Manual Transfer or Selector Device
, N* r: [3 y3 r4 D! G * 46 - Reverse-phase or Phase-Balance Relay
; A8 t9 h& o6 Q4 S/ A * 47 - Phase-Sequence Voltage Relay
9 c9 }: N/ v; T1 ]2 f/ o/ J * 48 - Incomplete-Sequence Relay- K/ ~: s2 D3 I/ \; `8 E
* 49 - Machine or Transformer Thermal Relay
. e P: [) J- \6 {0 R! `: \3 U" `# N * 50 - Instantaneous Overcurrent E& T# c( B9 q1 ?. V
* 51 - AC Time Overcurrent Relay" D3 T$ F% a1 N7 W
* 52 - AC Circuit Breaker
0 t( d1 I8 G3 I& j, H& D2 \* ` * 53 - Exciter or DC Generator Relay
# q3 p2 n% S }2 Z! |3 {" B. z * 54 - High-Speed DC Circuit Breaker
) }4 y. b9 L: h! p * 55 - Power Factor Relay
2 l6 _2 W1 ^" r# }( ~4 u * 56 - Field Application Relay
}2 R4 @, q2 J* t7 W * 59 - Overvoltage Relay3 M1 E, ?9 v1 f4 f' N
* 60 - Voltage or Current Balance Relay3 j1 _& h8 n& E
* 61 - Machine Split Phase Current Balance
. o @' M8 Z/ o) v( C * 62 - Time-Delay Stopping or Opening Relay
' F1 n- s1 a. O! D. p2 e * 63 - Pressure Switch6 _5 x0 _' J* P* ?) v4 Q+ p
* 64 - Ground Detector Relay9 R1 z2 h' c, }8 l" o1 c; I0 a3 B
* 65 - Governor* t0 B( P: u- d# n7 o0 t
* 66 - Starts per Hour
* \2 Z6 R% d3 X0 J * 67 - AC Directional Overcurrent Relay
$ }' Q, m( S5 M6 ^7 X) } * 68 - Blocking Relay
6 Z( F/ r2 L% n/ Y" z * 69 - Permissive Control Device
/ |$ y9 t( b7 \7 I( _ * 71 - Level Switch) m3 J/ o, W# |7 h: W1 d `+ ^
* 72 - DC Circuit Breaker% [2 s% b( F* @7 c. o1 Q
* 74 - Alarm Relay. T, u. x `$ E; G* o
* 75 - Position Changing Mechanism3 y+ ~9 ?* w0 J
* 76 - DC Overcurrent Relay
% W: m% D. C; s * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay' i$ U8 T4 q5 d- W
* 79 - AC-Reclosing Relay$ {: |/ a: R k3 O/ b* Y- D
* 81 - Frequency Relay4 J6 O1 x9 \& U
* 83 - Automatic Selective Control or Transfer Relay
% W5 s" N& ]! w: a$ B" f( ] * 84 - Operating Mechanism6 d2 U8 s. p+ D$ c" ? e+ {( D
* 85 - Carrier or Pilot-Wire Receiver Relay
% i" z5 G4 {' f( ? * 86 - Lockout Relay; ]$ k7 ~5 v: n- u: H
* 87 - Differential Protective Relay: c: R$ F& T# a' L9 t9 X' }" i
* 89 - Line Switch; w' I6 ^! O/ s% R
* 90 - Regulating Device
- V1 x2 w. H3 ~/ M! f& G5 [ * 91 - Voltage Directional Relay
' a3 m' S. ]! ^% @% H3 Z) e# J * 92 - Voltage and Power Directional Relay4 y( p* k2 a0 l5 l' n; g
* 94 - Tripping or Trip-Free Relay) y" d& c! m4 E- Y' Z" q* A! d- k
* 95 - Reluctance Torque Synchrocheck8 m: s, w, [& X; \3 Z' t
* 96 - Autoloading Relay |
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