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List of Device Numbers
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* 1 - Master Element
/ K- N1 ^. V) }: c, h: K * 2 - Time Delay Starting or Closing Relay
4 Q4 d3 N5 N* i$ J * 3 - Checking or Interlocking Relay
. J8 v1 |( D2 K! q' i0 }' L * 4 - Master Contactor# Q$ u) K- X; y4 F/ F
* 5 - Stopping Device
3 f' \5 k d% ~- w1 W6 M * 6 - Starting Circuit Breaker
) g/ }; g; ?5 f1 ~- t# U0 D @: N" U/ [ * 7 - Anode Circuit Breaker
! z1 g/ Q5 g; A1 w* V * 8 - Control Power Disconnecting Device4 j4 j* P* `4 g8 F2 o7 ]
* 9 - Reversing Device
* O; ~7 q0 V* U6 H8 N' I" R2 h6 K* c * 10 - Unit Sequence Switch
8 ? P/ m+ M1 L% i* P) } * 12 - Overspeed Device$ f: t5 \# j# T; n
* 13 - Synchronous-speed Device
, G7 B$ a i$ o' v * 14 - Underspeed Device/ P/ f* M2 T) k5 H0 p! U# u
* 15 - Speed - or Frequency-Matching Device; p4 m% P/ g& H
* 21 - Distance Relay
9 P8 I/ R. U" Z& f * 23 - Temperature Control Device
0 w! m' D% Q: Y' A * 25 - Synchronizing or Synchronism-Check Device
. m8 [1 |1 d% p/ [/ C$ W * 26 - Apparatus Thermal Device
. @) }( E0 u. I% s* ` * 27 - Undervoltage Relay
( i, ^: J9 p' t; r* H. i3 e * 29 - Isolating Contactor- V1 t5 p$ ~* s1 p! J9 U
* 30 - Annunciator Relay
: y' c% h# t' q0 C0 c * 32 - Directional Power Relay5 U: k( q- `) f, R6 G
* 36 - Polarity or Polarizing Voltage Devices
0 @0 h7 F" ^- @& Z; b- } * 37 - Undercurrent or Underpower Relay, P0 p- R3 p2 ^: u p- u: H+ D
* 38 - Bearing Protective Device
7 `$ p! J q, I7 N$ j/ J * 39 - Mechanical Conduction Monitor
$ S8 n5 ] e6 G1 V * 40 - Field Relay
( j7 y1 I, ?' I6 w * 41 - Field Circuit Breaker
4 N: g- M6 f+ [; B0 s* v * 42 - Running Circuit Breaker) R3 ^3 @! a4 X- y1 n. d* b
* 43 - Manual Transfer or Selector Device
# A+ \6 v; m9 L C5 E5 F; E0 j * 46 - Reverse-phase or Phase-Balance Relay% P6 r6 i3 x) x% B) q+ D' D
* 47 - Phase-Sequence Voltage Relay# E$ ~) r) t( Z g* k
* 48 - Incomplete-Sequence Relay1 g9 f- y, V0 |" L8 ^0 _, k* [1 M
* 49 - Machine or Transformer Thermal Relay. M; _- d& f8 W) l
* 50 - Instantaneous Overcurrent0 h# A3 r$ F, H
* 51 - AC Time Overcurrent Relay* l& z. U: T& x8 E T
* 52 - AC Circuit Breaker
2 L1 O. b' ]- i* G! _ * 53 - Exciter or DC Generator Relay% S! y( }, q9 M! ~
* 54 - High-Speed DC Circuit Breaker' |0 R g G2 c& l% I$ X, i
* 55 - Power Factor Relay1 n* t$ q7 x4 E) I; y
* 56 - Field Application Relay
/ O+ Z* z0 h# H * 59 - Overvoltage Relay1 Z, J! |5 {6 ^- E* p% N5 W& U
* 60 - Voltage or Current Balance Relay
! f7 W+ q% E/ n * 61 - Machine Split Phase Current Balance8 u j+ y% U: x) E9 i3 w: Z* A
* 62 - Time-Delay Stopping or Opening Relay$ {' x. y9 y8 n! \) `& ~! i
* 63 - Pressure Switch
2 X# D& A, ?" H4 a3 s3 Y * 64 - Ground Detector Relay0 ~! I7 ^4 u* ?; t/ l
* 65 - Governor
, Z4 d) l/ ^0 w5 Z) p1 s P * 66 - Starts per Hour- d# d ]+ ^7 g5 e+ l
* 67 - AC Directional Overcurrent Relay% m- v3 F7 g E
* 68 - Blocking Relay
2 c4 \6 B+ w; p( I/ ]! e * 69 - Permissive Control Device
# ~2 N- m. }# q* M * 71 - Level Switch
0 e/ N2 i' x3 t6 @7 v+ @ * 72 - DC Circuit Breaker+ ^* {& w8 R6 V
* 74 - Alarm Relay% ~2 Z0 [1 D0 ^7 [0 W
* 75 - Position Changing Mechanism
# Z( x+ P2 m* o' r( S * 76 - DC Overcurrent Relay9 J/ e. h% v, c+ ]) T3 Q9 H; Q6 Z5 S
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay" L& | Q0 K1 x' s
* 79 - AC-Reclosing Relay, i9 \* s, \/ S- w
* 81 - Frequency Relay
( r' g" J0 z) P! o: _" _+ s * 83 - Automatic Selective Control or Transfer Relay
& R' Q* M1 ?( j. p+ i# Y; C * 84 - Operating Mechanism, p1 P+ P# J& `6 S" j3 J
* 85 - Carrier or Pilot-Wire Receiver Relay
6 K7 [/ t( f* b7 i% J1 I0 U1 V * 86 - Lockout Relay5 @# X. T& `& u3 q4 ~5 J
* 87 - Differential Protective Relay
8 v! K, V9 K/ \ * 89 - Line Switch
1 P# U: p7 [! b* s4 i. `5 F * 90 - Regulating Device' h; d) Z+ u! q: \
* 91 - Voltage Directional Relay
, r; F9 s* D, T* T7 T * 92 - Voltage and Power Directional Relay" \2 {9 T% M3 L; L
* 94 - Tripping or Trip-Free Relay1 K' G/ _) ^7 y
* 95 - Reluctance Torque Synchrocheck7 |7 _! n9 G; e9 y( A) U, b/ d
* 96 - Autoloading Relay |
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