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List of Device Numbers* u* R9 Z3 j: s6 F6 @2 W
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: |% h8 @: p- J * 1 - Master Element
" t8 ~% Y. U3 W1 G% D * 2 - Time Delay Starting or Closing Relay
& _8 w2 @) D4 c. r * 3 - Checking or Interlocking Relay7 ^' u, f, Z$ ^& X
* 4 - Master Contactor2 T) U: V* W6 [* h+ {4 p0 v
* 5 - Stopping Device
" K/ _ K: D9 k8 m& Z$ f, | * 6 - Starting Circuit Breaker/ T) C( U8 o2 x0 f
* 7 - Anode Circuit Breaker3 i4 w, l' ~ n' u
* 8 - Control Power Disconnecting Device
) C- R' [3 r7 v% o6 g9 T/ X- @ * 9 - Reversing Device
. G( l. e% J: {- Q" i * 10 - Unit Sequence Switch
L s# { C: ^6 q- h0 F. _ * 12 - Overspeed Device, x7 B* [" a$ y3 f0 k* m, ~
* 13 - Synchronous-speed Device
/ `- T5 o9 s4 W* \% H' K/ L4 k * 14 - Underspeed Device
% U4 V: J$ e: ~! p' R * 15 - Speed - or Frequency-Matching Device7 k, h/ W/ t) l5 Y% r: o
* 21 - Distance Relay8 S( k; F" }- I( M- _
* 23 - Temperature Control Device
# g/ L R& `1 `% o. t9 l * 25 - Synchronizing or Synchronism-Check Device. x0 R: X% X/ ~: _; O; T# Y
* 26 - Apparatus Thermal Device+ Y) @; A" Q' O! f4 \
* 27 - Undervoltage Relay
7 C% F, x G& x( e0 O * 29 - Isolating Contactor$ S" w+ A: O$ E9 A" b
* 30 - Annunciator Relay; r2 A6 q7 v" s5 T
* 32 - Directional Power Relay) s3 \1 E- N! k7 I7 }
* 36 - Polarity or Polarizing Voltage Devices7 P# a+ n. d# n5 k3 X3 X
* 37 - Undercurrent or Underpower Relay
, v# w; V# Q) }$ t t- E * 38 - Bearing Protective Device
) H0 \" C j _, A6 S, q* B, I * 39 - Mechanical Conduction Monitor# r4 x$ L+ n5 ^0 X1 U% S
* 40 - Field Relay% \) |& o. Z8 T
* 41 - Field Circuit Breaker
9 K* a) H+ {5 W% A( D$ b * 42 - Running Circuit Breaker
5 ]3 S; Y8 y$ L% E: j( X * 43 - Manual Transfer or Selector Device
) Z8 V6 R& S5 Q0 j6 q! n; D& J * 46 - Reverse-phase or Phase-Balance Relay
/ I: g9 z3 S6 |$ q; e$ c * 47 - Phase-Sequence Voltage Relay
" |3 L3 B# w4 D/ a1 w4 u * 48 - Incomplete-Sequence Relay6 f# E3 z5 |1 S6 j$ Z0 j5 R
* 49 - Machine or Transformer Thermal Relay
* n5 S' y$ S0 }1 u" K7 k8 }( q2 ? * 50 - Instantaneous Overcurrent
0 U! j- s* l0 m# G6 Q8 y * 51 - AC Time Overcurrent Relay
+ P1 p/ O* U! I9 t$ U * 52 - AC Circuit Breaker# Z1 m* J& Q! x) B8 ^
* 53 - Exciter or DC Generator Relay
3 [7 n8 T9 m* T) E5 H& V$ B$ T% d * 54 - High-Speed DC Circuit Breaker/ W/ T2 C! I( z0 w
* 55 - Power Factor Relay
8 h- s9 D2 y+ }2 j0 A * 56 - Field Application Relay
9 A: [9 m8 X( n& @* u2 K3 Z * 59 - Overvoltage Relay# H5 ^4 ~( F5 D
* 60 - Voltage or Current Balance Relay& v# o9 \7 O) E9 f. h
* 61 - Machine Split Phase Current Balance' c7 r5 X! B; t
* 62 - Time-Delay Stopping or Opening Relay- y+ P, ^1 X2 @& i6 H( y7 L( n
* 63 - Pressure Switch+ k, t5 \- q* Z
* 64 - Ground Detector Relay
, L0 M7 g$ _6 i * 65 - Governor
3 U ?4 E4 V9 `% G7 P! h * 66 - Starts per Hour! J! f4 P6 \5 y5 I4 L, T
* 67 - AC Directional Overcurrent Relay6 k, ?/ c5 Y# q% P$ x+ I8 b
* 68 - Blocking Relay
* W- \% T1 c. j+ @3 Q# r+ Y * 69 - Permissive Control Device
1 ], L& u' ?7 y6 _0 V! O% ~ * 71 - Level Switch
( m1 F/ J8 B4 h9 W) o# e& U+ i& x * 72 - DC Circuit Breaker" J9 p6 W4 Q- R5 Z) W6 `/ B
* 74 - Alarm Relay
+ c' e! P0 M2 k; R! X$ D$ o * 75 - Position Changing Mechanism+ i* _; D+ p% J, y b% t
* 76 - DC Overcurrent Relay- @; n& Y7 ?7 p9 W
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay' Y: z8 B/ @ v- C% b+ U
* 79 - AC-Reclosing Relay9 y# B d7 W' b6 H8 e( H
* 81 - Frequency Relay
! w4 }7 r6 a) Z$ V0 i6 T * 83 - Automatic Selective Control or Transfer Relay( _9 F6 ^/ K9 A9 b! N
* 84 - Operating Mechanism
8 }$ S5 k! g& y. G * 85 - Carrier or Pilot-Wire Receiver Relay6 V1 L! E& T( O$ e. F6 N
* 86 - Lockout Relay, o; g$ G6 p1 `0 r* d) K* v
* 87 - Differential Protective Relay
+ R! K! z4 \6 t/ ^$ E8 G2 ^ * 89 - Line Switch
2 b' ]7 H8 b3 C4 N! ~1 _4 x8 M * 90 - Regulating Device
/ |, C/ G3 K9 b# Z1 g * 91 - Voltage Directional Relay- ?( K% j: v: k: ^
* 92 - Voltage and Power Directional Relay
" P* C* x9 L- p! v2 k$ U * 94 - Tripping or Trip-Free Relay' L% R! {, |9 n7 b
* 95 - Reluctance Torque Synchrocheck! i0 f( X6 G3 X: O- S
* 96 - Autoloading Relay |
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