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List of Device Numbers
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4 ]8 J& u, \& m @' H * 1 - Master Element" u7 q& a( G* y$ ~3 E& l3 A+ [
* 2 - Time Delay Starting or Closing Relay1 l, M4 p! v5 ?! k2 P/ c v
* 3 - Checking or Interlocking Relay
7 q: F$ ?% n5 H4 `& E * 4 - Master Contactor( l0 i# \5 r! Q3 C7 {4 G
* 5 - Stopping Device
& u0 |& Z+ g) n0 g- m2 v * 6 - Starting Circuit Breaker" V# W1 X& D- W5 ]
* 7 - Anode Circuit Breaker
& I" v$ }% a: { B * 8 - Control Power Disconnecting Device
J+ @+ D" m+ u * 9 - Reversing Device) ]6 S% c8 c% |! Z Q
* 10 - Unit Sequence Switch
T- i5 O1 a- ~* F * 12 - Overspeed Device- W8 w% `- E& H4 O0 Q: f0 ^( _
* 13 - Synchronous-speed Device
& e. T' G/ ?& i7 V * 14 - Underspeed Device
+ \! O& E' L! r& L% I" @$ T, q * 15 - Speed - or Frequency-Matching Device
' Y, d* Y2 c2 l1 @0 ` * 21 - Distance Relay) |' \* U" y+ O
* 23 - Temperature Control Device
$ J+ }+ E v* |. ] * 25 - Synchronizing or Synchronism-Check Device9 o5 M) V; k! F4 t8 l$ q
* 26 - Apparatus Thermal Device
& L( H8 r) {5 N0 p * 27 - Undervoltage Relay' `4 D" o# {( ]4 N
* 29 - Isolating Contactor
4 q& t9 Z& h% S5 P% l5 b* Y * 30 - Annunciator Relay# L9 A6 K: \# M7 k* @' b# v' _
* 32 - Directional Power Relay
" m* f) |, p* U* a& ` Y * 36 - Polarity or Polarizing Voltage Devices9 g0 v. C9 W) q% t) |5 r4 i P
* 37 - Undercurrent or Underpower Relay
8 w: x2 n, I9 l3 [ * 38 - Bearing Protective Device
5 [. C$ P. c+ q4 s- Q+ o5 M/ v * 39 - Mechanical Conduction Monitor' M1 F0 x0 g! |) T4 H7 E
* 40 - Field Relay
/ J* n# R5 O4 Q2 L * 41 - Field Circuit Breaker# t8 a4 u) y2 L" ]2 H' e5 M
* 42 - Running Circuit Breaker
2 @9 l% \8 G" M. R * 43 - Manual Transfer or Selector Device G4 N6 t. Z6 q2 \
* 46 - Reverse-phase or Phase-Balance Relay5 V: d0 M! y/ i7 Z
* 47 - Phase-Sequence Voltage Relay# [* I8 [1 i1 @0 ^, i+ y y
* 48 - Incomplete-Sequence Relay( ]9 W- s; y1 K. D% l; M9 d, i/ ]1 H
* 49 - Machine or Transformer Thermal Relay
, R, U$ a y- J, b4 C( t6 F- B * 50 - Instantaneous Overcurrent
$ n* r; H9 i5 M0 h4 g7 B: D' F * 51 - AC Time Overcurrent Relay
9 g9 d5 X( l4 E4 O$ a- E: y * 52 - AC Circuit Breaker9 I4 _2 v1 K# @
* 53 - Exciter or DC Generator Relay
- [7 V, ?+ y$ j, V8 s * 54 - High-Speed DC Circuit Breaker- ]5 N% q" a/ _
* 55 - Power Factor Relay6 O) [& x+ ^% b- z2 J I& a7 b
* 56 - Field Application Relay
5 v3 x7 Y' C6 q * 59 - Overvoltage Relay
7 {0 G( }3 C9 v9 V7 O( u * 60 - Voltage or Current Balance Relay$ o! |/ x& l: w ~9 [" I; D# w5 j o
* 61 - Machine Split Phase Current Balance
, m! i2 ^& R6 y N, e" P0 N$ b& q. ^5 F' c * 62 - Time-Delay Stopping or Opening Relay
* D* W2 }1 [. O$ N2 g* F' a) t8 `+ D * 63 - Pressure Switch
5 f; v( m/ |) a * 64 - Ground Detector Relay; v7 N$ o' }/ \2 I
* 65 - Governor0 v5 D3 Q0 B! i. O0 Q, U& Q. N
* 66 - Starts per Hour* E: c- v7 U/ J" I1 w0 A8 W1 w3 V$ _
* 67 - AC Directional Overcurrent Relay
7 y0 e: v* K" O" l4 G * 68 - Blocking Relay
( r0 T& a- l! ?2 l * 69 - Permissive Control Device8 V# P, c; P& M0 C# G9 e. q
* 71 - Level Switch
$ y2 G0 h& h% a3 d. R) _& K * 72 - DC Circuit Breaker3 k2 m8 Q5 y$ H- S) t) J
* 74 - Alarm Relay' ? \5 `3 S4 w$ Z5 P$ L
* 75 - Position Changing Mechanism7 j; d* v/ X, ~% X4 U9 ^
* 76 - DC Overcurrent Relay; I# [8 j. I) w/ r& a, l% ]
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
, W y8 d7 _/ m * 79 - AC-Reclosing Relay. a: m- z/ k6 {1 P
* 81 - Frequency Relay0 e5 z9 l) r# l- }$ n( v. q" Q
* 83 - Automatic Selective Control or Transfer Relay
( j$ Q$ q0 s* j6 H! I/ K6 j0 {* D * 84 - Operating Mechanism. V! i9 q8 H% L R& m, t% j
* 85 - Carrier or Pilot-Wire Receiver Relay( s" F/ `+ l2 M1 C
* 86 - Lockout Relay! g) J' l0 q8 J9 \0 [. R
* 87 - Differential Protective Relay7 Z6 |+ Q% v% l7 Y# e& ~% q) Q
* 89 - Line Switch
- J7 b% [: X1 S( K+ y1 N: d4 n2 k * 90 - Regulating Device
; b) D: ]: T ]1 f * 91 - Voltage Directional Relay
8 s# e* R# ^' j * 92 - Voltage and Power Directional Relay
. A2 ?1 ?, V4 n/ P * 94 - Tripping or Trip-Free Relay
- a8 m5 c: u. w7 K * 95 - Reluctance Torque Synchrocheck
( S; q; l4 C4 O" |8 g * 96 - Autoloading Relay |
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