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List of Device Numbers( t# M9 B, `' Y
Click to learn more...8 R0 f- R$ f+ k6 K& E
( X3 Y; m! b3 M' ]: K" I7 n$ b5 g * 1 - Master Element
1 B8 i( F e4 Q& e+ ^" l3 \# Z: [ * 2 - Time Delay Starting or Closing Relay) M A6 F8 v9 b! o8 Q& K; e
* 3 - Checking or Interlocking Relay2 t1 H* e( ?5 W0 j4 Q# j' p6 m1 R
* 4 - Master Contactor+ }6 c$ o9 A: D! [/ M: D
* 5 - Stopping Device) |* o' q9 t) d6 V( m
* 6 - Starting Circuit Breaker
1 B& H( p7 ] U7 J; _0 O8 R) z * 7 - Anode Circuit Breaker4 c3 O) T, H: ]3 L# j
* 8 - Control Power Disconnecting Device- f7 C; a- M( f) P
* 9 - Reversing Device! k' b" m, W3 @! {" G
* 10 - Unit Sequence Switch
& n3 k$ E# x' f * 12 - Overspeed Device. @2 d/ V/ }6 m- R/ a/ K
* 13 - Synchronous-speed Device* e& V) D$ V" o
* 14 - Underspeed Device2 i2 e/ A" \, `; J# o# e- M
* 15 - Speed - or Frequency-Matching Device& S) `3 W$ }. p% Z
* 21 - Distance Relay
7 k5 ]; v6 j+ g# s- |5 V# w * 23 - Temperature Control Device
% c) }1 ?6 P% I$ U, X. f * 25 - Synchronizing or Synchronism-Check Device/ ]+ V; r$ @7 y
* 26 - Apparatus Thermal Device
) {4 j2 A* b' O4 _+ l X * 27 - Undervoltage Relay, `5 b8 a" [ H1 R; M6 ^8 ^% C
* 29 - Isolating Contactor4 b" g4 o$ R; C, ?* d
* 30 - Annunciator Relay0 T$ S- Y0 [% w" J4 ?, X! t$ [; o
* 32 - Directional Power Relay
7 F6 W6 E! \5 X0 l" m * 36 - Polarity or Polarizing Voltage Devices
: Z+ c2 H2 r) ?5 ~$ y: s * 37 - Undercurrent or Underpower Relay
0 o9 s; ]2 w0 T1 e2 Y * 38 - Bearing Protective Device7 N: x* }, y; l, `. Z+ r; O7 k# U' x
* 39 - Mechanical Conduction Monitor
) y T% ]! z1 e1 E * 40 - Field Relay! K# u- U( A1 k: |0 q
* 41 - Field Circuit Breaker( r2 a9 ~. s* ~8 a/ \0 i, {& A0 A
* 42 - Running Circuit Breaker0 ^* M& C- u6 E( K
* 43 - Manual Transfer or Selector Device
4 m- o5 n! w7 O$ G * 46 - Reverse-phase or Phase-Balance Relay$ Q/ V' t* U( ]- _, `
* 47 - Phase-Sequence Voltage Relay
; u0 U1 v% V# Y6 Z6 E * 48 - Incomplete-Sequence Relay
3 x$ A" Q% J7 p( ] * 49 - Machine or Transformer Thermal Relay
& ]6 Y( V8 I9 c( x, X4 g j, o* @( ] * 50 - Instantaneous Overcurrent
) s; w2 W: o8 N: n * 51 - AC Time Overcurrent Relay5 e0 p: _) ^4 |& m8 F
* 52 - AC Circuit Breaker
* m* Z" w0 m9 y: T$ f/ U/ b! k * 53 - Exciter or DC Generator Relay
: V' k8 q" g1 v8 b, g * 54 - High-Speed DC Circuit Breaker
q; E1 w, v" K7 p9 F * 55 - Power Factor Relay
( F, ]' B4 Y5 q1 ~ * 56 - Field Application Relay
7 `0 V) M2 n, L/ s G: H * 59 - Overvoltage Relay
7 d3 c7 F) p! v% E" C& L5 r * 60 - Voltage or Current Balance Relay
, P2 b" ?4 N7 p! d7 W; d * 61 - Machine Split Phase Current Balance
5 r3 i& F6 W$ Y * 62 - Time-Delay Stopping or Opening Relay9 }8 ^4 x" F2 Y; {8 @4 a, u; @
* 63 - Pressure Switch7 c8 T7 N; j4 D7 l
* 64 - Ground Detector Relay6 n6 L9 C- P K/ k/ c4 r
* 65 - Governor
^- X- z3 c0 Z% g6 r; ` * 66 - Starts per Hour" k) c1 a8 A% m( K( P
* 67 - AC Directional Overcurrent Relay
- d. e! n9 g# _4 V' K5 i * 68 - Blocking Relay
) K' w( Z' G5 d( o, I" M2 J * 69 - Permissive Control Device
3 g# B: h7 |% R+ K* a2 M7 ^ * 71 - Level Switch
2 @" e3 ^# X0 A& y7 y1 h# H* X, [: w9 J * 72 - DC Circuit Breaker0 l; |6 i' y) N; m, K
* 74 - Alarm Relay+ P, h# G+ t: {
* 75 - Position Changing Mechanism8 O# y7 b6 u1 ~% Z% r! i* O
* 76 - DC Overcurrent Relay
: \, w8 ]% T3 W% n * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
: H" U: R& w- m* E * 79 - AC-Reclosing Relay
; t2 b. c/ N3 }$ [. U2 J) m * 81 - Frequency Relay
7 R; x0 c/ D. C * 83 - Automatic Selective Control or Transfer Relay2 }, s9 {# T* X7 O( t v) j
* 84 - Operating Mechanism
. ]# {! O- h. v: g, w * 85 - Carrier or Pilot-Wire Receiver Relay
, P) {5 C! Q6 e5 o1 S/ @ * 86 - Lockout Relay
- ?" s! q& b9 J9 g# h$ S, s* w! ^ * 87 - Differential Protective Relay! N% e$ u, ]4 n6 a% d8 N+ c
* 89 - Line Switch
& S' K3 T! F4 C4 c * 90 - Regulating Device& r- q* _3 q& z: C/ T t
* 91 - Voltage Directional Relay5 {" p) a1 ]; }
* 92 - Voltage and Power Directional Relay" P6 p* P8 {3 u+ {6 H
* 94 - Tripping or Trip-Free Relay" ]0 V) r: ^0 m- W8 z4 U
* 95 - Reluctance Torque Synchrocheck2 |: K4 d2 @6 F+ _3 Z+ f1 M3 w
* 96 - Autoloading Relay |
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