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List of Device Numbers
8 [7 ?' o/ x1 I F+ I# KClick to learn more...+ B% B3 r7 R( t! q" ]% N$ h
6 @# B( C) a5 y( \ * 1 - Master Element
6 }, C4 S% e0 y+ E' s * 2 - Time Delay Starting or Closing Relay
4 A* Y! j& ^ K8 h3 X, L * 3 - Checking or Interlocking Relay) @1 @5 _9 b& w
* 4 - Master Contactor
/ W% ~* J& ^9 J8 R2 D# | * 5 - Stopping Device
$ J) L, A" x# u0 r2 Q6 k * 6 - Starting Circuit Breaker6 I* q# y) ^: I% G
* 7 - Anode Circuit Breaker5 d4 p5 ^5 R G. g
* 8 - Control Power Disconnecting Device
$ u+ m. T; g! X0 {$ Q * 9 - Reversing Device
* c! k7 @. _7 }. ], h: j * 10 - Unit Sequence Switch! L0 G4 W/ A. `+ L5 j
* 12 - Overspeed Device8 s2 x$ f* R+ D/ V- _
* 13 - Synchronous-speed Device
) E" t: e0 d' q4 E2 D4 o( b * 14 - Underspeed Device) k' v8 C. A+ s' O p
* 15 - Speed - or Frequency-Matching Device
" O& c% K* y% ^9 M6 N' V * 21 - Distance Relay
) w! p0 x+ _, Y# { * 23 - Temperature Control Device
3 P$ F% g, k: ]0 i * 25 - Synchronizing or Synchronism-Check Device1 {% l. n9 O, S* H' [1 ]
* 26 - Apparatus Thermal Device% l. Z' O$ D1 Y
* 27 - Undervoltage Relay
! K7 g5 W5 j" t; H, J- I * 29 - Isolating Contactor( c: l! `0 v# J( O+ w5 v- E F- N, F
* 30 - Annunciator Relay
& D) `6 A! m9 a& P* N * 32 - Directional Power Relay
- J9 F6 C0 d; K/ K- C" y- T% R * 36 - Polarity or Polarizing Voltage Devices" {) A/ c3 F3 d4 C: F6 j
* 37 - Undercurrent or Underpower Relay. X) B) w3 q. z5 i7 ~& t
* 38 - Bearing Protective Device/ L: N) f7 ?( a9 n
* 39 - Mechanical Conduction Monitor% p* q8 @% `3 s1 f7 v# r+ f: l
* 40 - Field Relay; M7 c, K2 `% }! [ O0 H- e! F# C
* 41 - Field Circuit Breaker [/ T, V& V( T: Z- ~: ?
* 42 - Running Circuit Breaker
- J8 h" _- n% z# a# J * 43 - Manual Transfer or Selector Device
9 y0 b: }# E8 Q, B * 46 - Reverse-phase or Phase-Balance Relay
/ j/ k* \5 L m6 g * 47 - Phase-Sequence Voltage Relay
, F6 a2 h3 V5 D: B * 48 - Incomplete-Sequence Relay0 o3 V2 K1 \& k3 y- b% R c
* 49 - Machine or Transformer Thermal Relay$ s1 R7 a" n0 _: k( w5 a7 S3 k
* 50 - Instantaneous Overcurrent
+ T3 y0 }. G9 a3 D& c * 51 - AC Time Overcurrent Relay! A! ^" K4 \- p# i. A1 o
* 52 - AC Circuit Breaker' O& J U2 B8 w: Y \1 q
* 53 - Exciter or DC Generator Relay
O! i2 u3 w' i8 ]2 q* w, v( o * 54 - High-Speed DC Circuit Breaker- R& ~" E, ~' o8 |& G3 ~# v
* 55 - Power Factor Relay- m8 B) r* A# y
* 56 - Field Application Relay8 [, ?' u. g( O' R& z
* 59 - Overvoltage Relay
5 i$ H2 C% @6 f- O* C5 j* q * 60 - Voltage or Current Balance Relay
: [2 Q% o( Z3 H. K6 Q * 61 - Machine Split Phase Current Balance: g0 n; P8 Y, H% |
* 62 - Time-Delay Stopping or Opening Relay- P0 W8 a w" T r( ]
* 63 - Pressure Switch
; p4 [0 P+ }: M" R * 64 - Ground Detector Relay% X; Z( N/ m2 m% H
* 65 - Governor
! x" V C6 A" k9 R3 x * 66 - Starts per Hour
- Z6 x# s+ D1 ^' v! b2 X6 k * 67 - AC Directional Overcurrent Relay
; r2 M/ j! q8 S- o; j S * 68 - Blocking Relay
6 x1 K% Q& V$ c8 K' t" e- ]9 w * 69 - Permissive Control Device- n% Z; S" m: Y+ _" S
* 71 - Level Switch
. X6 K. ^ v) Y# F( D * 72 - DC Circuit Breaker! q2 Z: c" M& ?: M- O5 d
* 74 - Alarm Relay
. `# k9 U9 T4 h: U& U * 75 - Position Changing Mechanism
% u9 |2 w U' ^( O5 e5 G * 76 - DC Overcurrent Relay
, P& y" S' v8 @/ G- n * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
" Y# |- S& h k2 z9 e * 79 - AC-Reclosing Relay
. n) A; z3 W D+ V# a( V" G * 81 - Frequency Relay
( [- W4 g+ ^0 o7 k- g * 83 - Automatic Selective Control or Transfer Relay
( [) q1 H- [( W; F * 84 - Operating Mechanism
2 ^6 V% ^5 R; \$ d: Q+ ] * 85 - Carrier or Pilot-Wire Receiver Relay, m+ |. b) s6 R
* 86 - Lockout Relay! f, d; [- D3 L) E
* 87 - Differential Protective Relay
3 j4 i" `( A! `: r0 v8 K& G * 89 - Line Switch( x$ _& m% R2 _" l' D8 {7 W9 l
* 90 - Regulating Device
, u7 B; |% c, q * 91 - Voltage Directional Relay
8 Y1 O# u+ k9 D# _+ p) q! E5 x * 92 - Voltage and Power Directional Relay' [" B8 W2 b7 Q h4 _ f' E4 `) f
* 94 - Tripping or Trip-Free Relay3 g) y m4 `9 B% B8 w5 S
* 95 - Reluctance Torque Synchrocheck
+ L: q: C$ k/ q * 96 - Autoloading Relay |
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