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List of Device Numbers# t, B3 ^+ t+ O6 \; ]1 Y$ D
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! S6 _" t: s1 o( m2 m2 H4 n* w+ u * 1 - Master Element; I+ t& W3 z4 e" J" Z
* 2 - Time Delay Starting or Closing Relay
~9 v/ {1 z6 r! u% f, M+ O9 [9 w * 3 - Checking or Interlocking Relay
: s- w e+ q" R6 V * 4 - Master Contactor
, l6 }3 b5 |- {1 V- ^ l * 5 - Stopping Device1 ~; z8 W% t+ }. `) U2 h2 u* r$ ~
* 6 - Starting Circuit Breaker
1 T% N6 m/ r& {! c# z' ^ * 7 - Anode Circuit Breaker+ l6 ]9 d; L3 _5 V
* 8 - Control Power Disconnecting Device
/ W. S! m" Z' t- Z* s3 |5 H * 9 - Reversing Device
8 h$ Z4 b6 \% J8 V* a5 e5 d * 10 - Unit Sequence Switch
$ r0 A8 r' P: y0 h( S @8 G * 12 - Overspeed Device v7 w; }. @( T6 G5 t0 b6 j( \8 h3 P
* 13 - Synchronous-speed Device
[* r, |6 T8 J+ N, j * 14 - Underspeed Device, r0 d! l' w/ ~5 P0 ]% {" V7 w1 X
* 15 - Speed - or Frequency-Matching Device
$ q* u! U- C2 t# b, ~! x9 t * 21 - Distance Relay( q* @" m, N3 O
* 23 - Temperature Control Device
2 d t1 r* d7 _- H& @% B9 u% Y4 \ * 25 - Synchronizing or Synchronism-Check Device3 f5 S& B) \4 `# b: v
* 26 - Apparatus Thermal Device/ Q5 E$ {$ W2 Y7 R
* 27 - Undervoltage Relay% F/ w0 U0 X8 U# ]5 w2 T
* 29 - Isolating Contactor
: K2 f0 p) U. L% V5 m * 30 - Annunciator Relay
$ {9 \/ a% h3 t * 32 - Directional Power Relay
0 ]' L! g4 z* o% N, _: u * 36 - Polarity or Polarizing Voltage Devices. F, W$ T! K$ s
* 37 - Undercurrent or Underpower Relay
5 n( P6 m/ }, d, { * 38 - Bearing Protective Device# R- s" E! z: Q) g& L9 e5 `
* 39 - Mechanical Conduction Monitor" ~8 D9 M8 D: |- n
* 40 - Field Relay
8 N- n9 C: a; |' S5 | * 41 - Field Circuit Breaker- K% g5 k, v& A) F3 P7 O
* 42 - Running Circuit Breaker6 {- h4 K7 B4 k8 D
* 43 - Manual Transfer or Selector Device
8 d0 R/ q. `$ ]& w * 46 - Reverse-phase or Phase-Balance Relay
, S# Q4 [7 |& E# Z ~4 U * 47 - Phase-Sequence Voltage Relay
1 P, K# E. L) z& U1 s' S, \ * 48 - Incomplete-Sequence Relay1 {0 a$ J! _0 Z
* 49 - Machine or Transformer Thermal Relay
# Q1 M& e- l8 @/ P * 50 - Instantaneous Overcurrent
" Y" W5 Q6 l8 f * 51 - AC Time Overcurrent Relay7 R; X- T, D& H; S
* 52 - AC Circuit Breaker2 f) z. t2 g( c2 u
* 53 - Exciter or DC Generator Relay! E8 v* j4 r% \; N
* 54 - High-Speed DC Circuit Breaker
3 S9 R) i% [. j4 J6 S# F * 55 - Power Factor Relay
- K7 I7 i$ f+ H# a# a * 56 - Field Application Relay
/ l) H4 a4 d& ~+ y * 59 - Overvoltage Relay
* M) o7 k. q) X * 60 - Voltage or Current Balance Relay- |. t- M7 n) X
* 61 - Machine Split Phase Current Balance3 |+ P2 k0 p+ A/ w" U( A
* 62 - Time-Delay Stopping or Opening Relay
; \0 ^8 W- D% o# J * 63 - Pressure Switch( H7 m5 D# C" D7 I
* 64 - Ground Detector Relay
. L( B1 z4 H% P* d6 c * 65 - Governor! E* n( v- s" y% T' }5 d- y
* 66 - Starts per Hour
$ @' g! B2 U* }3 ?3 s: m* Z& J * 67 - AC Directional Overcurrent Relay
$ E6 I+ h6 \% x5 { * 68 - Blocking Relay
2 A* ?9 b2 K7 i5 _ * 69 - Permissive Control Device
5 M7 }" d$ K' c4 c# ~" V# m * 71 - Level Switch" B- c2 ?1 z- `
* 72 - DC Circuit Breaker
4 E; g( d! [( z! g * 74 - Alarm Relay
6 v; G, V* w# D$ [! r, }) y& t * 75 - Position Changing Mechanism
; x+ _% t6 k x1 e2 L * 76 - DC Overcurrent Relay4 S, C5 i2 K; d' C9 z1 o% X) C1 u8 M' w
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay$ G' _- e6 N4 C* c. a# R1 f$ i- E
* 79 - AC-Reclosing Relay
; F6 X' E5 I2 n: Q# ]# y# z * 81 - Frequency Relay
3 p+ Z% H5 x( [; b3 l * 83 - Automatic Selective Control or Transfer Relay
7 w* v0 S. J6 G3 H' f * 84 - Operating Mechanism
; q) s, H1 P8 G! q6 M4 @& N2 }( O3 R' l * 85 - Carrier or Pilot-Wire Receiver Relay
, F$ ^: U& m v _. h; v * 86 - Lockout Relay- k' {: C/ @* P; s1 Y, ?
* 87 - Differential Protective Relay
$ V* Y2 L8 z& a0 F( p8 X * 89 - Line Switch' [% \' G2 e$ t+ B8 l
* 90 - Regulating Device' ~* W) n! C* F% F8 p: B1 I, G
* 91 - Voltage Directional Relay
: Q- q+ U$ Y J* a * 92 - Voltage and Power Directional Relay- ~/ M' b3 N$ U, E/ y2 s( v/ i
* 94 - Tripping or Trip-Free Relay1 }( }: l2 N3 Q2 ~+ N
* 95 - Reluctance Torque Synchrocheck, T) |% {" y5 f" L$ _; U
* 96 - Autoloading Relay |
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