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List of Device Numbers' u; j/ I+ t" i$ h4 A- @% k2 P
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* 1 - Master Element& U1 T7 i5 }; `7 p3 Y
* 2 - Time Delay Starting or Closing Relay& r3 i5 b* x2 G$ @6 h2 h
* 3 - Checking or Interlocking Relay5 O+ Q# K6 n8 B: q$ a4 B' J1 v
* 4 - Master Contactor
. ~' y- j8 u7 Q a * 5 - Stopping Device
% V* e6 \3 k7 @) H2 l1 b5 M) X/ n * 6 - Starting Circuit Breaker
2 v3 Z' |7 F1 p * 7 - Anode Circuit Breaker! d/ y, D3 A- T1 b* O$ g) j
* 8 - Control Power Disconnecting Device( P" i2 i7 d- \' x, X
* 9 - Reversing Device' Z5 s9 q& n3 s" ?0 y4 z
* 10 - Unit Sequence Switch4 J, x. ^( G* S, g' O3 M
* 12 - Overspeed Device8 Q% B: F* s0 |( s
* 13 - Synchronous-speed Device0 I2 X9 U" t! _$ R* _, B& N
* 14 - Underspeed Device: K; w4 g" _2 y0 ~6 l2 l. Y
* 15 - Speed - or Frequency-Matching Device- C% X; E2 J& B6 y9 ]* Q# y- {
* 21 - Distance Relay! a# }8 F( F4 Q, h% d
* 23 - Temperature Control Device
6 P: k4 k, i9 @' u * 25 - Synchronizing or Synchronism-Check Device
6 J7 A3 d* U1 a * 26 - Apparatus Thermal Device
6 v) r' e- {, M8 ?0 r0 T5 G * 27 - Undervoltage Relay. X" O- d3 m7 Y+ P& N; Y4 m, }' u% @. t
* 29 - Isolating Contactor
. J- b4 A/ P7 y3 I * 30 - Annunciator Relay- r( [" V6 }$ m5 q* R: L8 c
* 32 - Directional Power Relay$ ~# R( P# P* D7 h9 a! e* }
* 36 - Polarity or Polarizing Voltage Devices9 E6 ^ A" m4 w2 c- J% i5 n
* 37 - Undercurrent or Underpower Relay
5 P! D- [, Z: E! I * 38 - Bearing Protective Device6 L8 e0 i6 O2 P/ D% G+ @9 _; n3 |# P
* 39 - Mechanical Conduction Monitor; i+ _! P/ d" O9 ~$ n
* 40 - Field Relay
% j& ?! ?0 y Y; w- @( E, z * 41 - Field Circuit Breaker7 G1 t' B6 T0 `9 f6 L: @7 o
* 42 - Running Circuit Breaker
6 ?) B5 h% u7 W) ^* W * 43 - Manual Transfer or Selector Device8 t9 D% ?6 g `% l9 ?) y! U; b$ W
* 46 - Reverse-phase or Phase-Balance Relay# T, b, T6 c9 J( w' O* |
* 47 - Phase-Sequence Voltage Relay1 R" \: s% ~' d; m' y1 T
* 48 - Incomplete-Sequence Relay, ~3 ?& `1 R) f, d2 W% T
* 49 - Machine or Transformer Thermal Relay
$ Q) n+ _1 S; R: p) N' t" t& f; }8 a * 50 - Instantaneous Overcurrent
1 z* Q% F% L" S. H& P4 d * 51 - AC Time Overcurrent Relay/ E! @, Z3 F2 J3 o/ d
* 52 - AC Circuit Breaker
5 ^; c$ S* ?2 L& U" Z# I1 y * 53 - Exciter or DC Generator Relay+ R! E* U+ E1 C! W( P
* 54 - High-Speed DC Circuit Breaker0 A$ _; s) [" ?* {
* 55 - Power Factor Relay7 U2 [1 b/ ~0 X1 [% d
* 56 - Field Application Relay# Q, Q. I) b: A( H& R% ^& p
* 59 - Overvoltage Relay
8 m5 ]* |. @0 U8 X7 T3 I' l * 60 - Voltage or Current Balance Relay' L+ y( a( H( |) | a: l1 p; ?
* 61 - Machine Split Phase Current Balance( |: B U% H& G1 W
* 62 - Time-Delay Stopping or Opening Relay) i6 F5 h( c9 P* D
* 63 - Pressure Switch0 v e. v* j2 K8 R8 j' _
* 64 - Ground Detector Relay+ R$ ^2 y3 r' q) L& ?" u
* 65 - Governor( i+ k( t4 r. r& b! V& {$ h
* 66 - Starts per Hour( o, Q" g& {, ?5 }
* 67 - AC Directional Overcurrent Relay! {& v2 d/ S" d( O: G
* 68 - Blocking Relay
. ]9 X/ P# R; q; i' \# R7 M * 69 - Permissive Control Device
% |3 g$ |, p4 y5 E8 S * 71 - Level Switch' I; b p/ n9 ]' d* {8 n
* 72 - DC Circuit Breaker
; m6 M& A2 g4 W N9 S/ N/ f * 74 - Alarm Relay
/ k" m6 z% Z; t: X2 M, M9 H: z * 75 - Position Changing Mechanism- c3 z9 l) t3 i8 A6 K. ]- j
* 76 - DC Overcurrent Relay
& \* t2 g) `; k# ?. F1 i * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay( G$ M$ I! O5 R4 _1 O; V. U
* 79 - AC-Reclosing Relay
3 L$ s9 V5 t6 r * 81 - Frequency Relay
4 M# @$ N" ~% n+ v q4 a. \$ W * 83 - Automatic Selective Control or Transfer Relay
: B1 N% C; C' } * 84 - Operating Mechanism- j# c$ D5 Y$ ^2 l
* 85 - Carrier or Pilot-Wire Receiver Relay
X" X4 X* y4 P {6 M: D% e& q$ Z * 86 - Lockout Relay" X3 d; g( }3 L! C- E/ A* S
* 87 - Differential Protective Relay
0 m O0 T3 A* C' f6 Y- V * 89 - Line Switch% t: J- c+ Z6 }( W" ]+ d' @) {
* 90 - Regulating Device
* P. l1 X% \2 w" Q * 91 - Voltage Directional Relay
" [6 R& V1 y. n9 O0 l- A. j * 92 - Voltage and Power Directional Relay+ B. w7 K" O0 `4 l! p: E
* 94 - Tripping or Trip-Free Relay( l; {; E9 o) E. a( T% s7 x
* 95 - Reluctance Torque Synchrocheck
8 B7 r6 e/ _" D) b7 d * 96 - Autoloading Relay |
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