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List of Device Numbers
: e) t' h, }9 QClick to learn more...1 j5 ^1 u& _& _( a
4 i2 u& u, x8 Q! L * 1 - Master Element! u# |! e k- d) R7 R
* 2 - Time Delay Starting or Closing Relay
( w6 s1 J! j# J& `% D * 3 - Checking or Interlocking Relay9 q3 a7 N. f4 e+ F& p( Z
* 4 - Master Contactor
! E, w! d0 Q+ i, [" ` * 5 - Stopping Device6 @3 L* N2 Q+ F
* 6 - Starting Circuit Breaker9 ^4 \5 H5 u$ L: k% [) |8 Y
* 7 - Anode Circuit Breaker9 M: F" t) I. p( p
* 8 - Control Power Disconnecting Device( S' q- V$ W$ |" x# ~% c
* 9 - Reversing Device3 U& O9 y& I' u2 R
* 10 - Unit Sequence Switch
$ f$ \" D4 }! ` * 12 - Overspeed Device p) L! d2 C1 K m. r
* 13 - Synchronous-speed Device% M' o! J# C; N8 h7 x
* 14 - Underspeed Device
/ W2 B- `4 l, V, U8 J5 s1 \, m* C) u% E * 15 - Speed - or Frequency-Matching Device
2 Y/ @. y! r+ O- \2 I3 h6 v3 O1 D6 P* V * 21 - Distance Relay7 i0 U: N3 j# M
* 23 - Temperature Control Device! n- G9 k: m2 T/ e
* 25 - Synchronizing or Synchronism-Check Device# f7 _9 C2 g# l# }: r1 A
* 26 - Apparatus Thermal Device9 j( Y2 `# v6 g6 e; Y
* 27 - Undervoltage Relay' h, A1 e5 h9 D4 m
* 29 - Isolating Contactor" ]4 s3 m5 j. K2 y5 B# Q
* 30 - Annunciator Relay) u4 M) p5 \9 s0 O. t: Z: ?3 j
* 32 - Directional Power Relay: C+ c9 E/ j9 c! f6 Y: D
* 36 - Polarity or Polarizing Voltage Devices
8 Z) X( c; X! X/ O9 I * 37 - Undercurrent or Underpower Relay) _, i3 L, |; H+ m+ U% R
* 38 - Bearing Protective Device4 U! ?) }$ }6 o8 w! V' O
* 39 - Mechanical Conduction Monitor, T" m7 O8 k, e) V" h
* 40 - Field Relay
- H& T) H* t6 i9 W( W5 g0 _ * 41 - Field Circuit Breaker) G) L( r# s5 s+ S, g
* 42 - Running Circuit Breaker
$ E3 J( W4 _6 b! w8 h% k, O * 43 - Manual Transfer or Selector Device
9 y4 U2 i4 ], p$ U) B+ n * 46 - Reverse-phase or Phase-Balance Relay: V: `+ Z; |2 T! G& D
* 47 - Phase-Sequence Voltage Relay# {) r9 P* ~ Y$ e- q1 A
* 48 - Incomplete-Sequence Relay
0 b! Q6 X' F# ~, ~5 O" _ * 49 - Machine or Transformer Thermal Relay6 r$ q+ E) I" G9 n: N; y
* 50 - Instantaneous Overcurrent
6 J% Y! l- U$ [. I- @. o. E * 51 - AC Time Overcurrent Relay
$ P6 P" s% N, Q G * 52 - AC Circuit Breaker
/ J' A. U5 K, `; n8 ] * 53 - Exciter or DC Generator Relay9 a1 K0 d& {9 E3 C/ f* v6 B
* 54 - High-Speed DC Circuit Breaker) V0 }9 `& ~( k/ H0 r% ?9 P$ i
* 55 - Power Factor Relay0 J6 d* Q$ u6 x) M" N
* 56 - Field Application Relay
d3 ?# i3 b% X# Y% T o6 w* K * 59 - Overvoltage Relay4 s2 u+ R* \- R; X7 c+ M& q
* 60 - Voltage or Current Balance Relay$ F* B. I! [$ u9 c1 B% p
* 61 - Machine Split Phase Current Balance8 s; x% p4 b* B
* 62 - Time-Delay Stopping or Opening Relay; J6 w: }, q5 ~1 J+ M. Z
* 63 - Pressure Switch
' a8 l1 Q% _6 M% j * 64 - Ground Detector Relay$ g# X2 z! w P5 L% ?% p
* 65 - Governor7 g8 ]/ ]4 O. j' P7 b4 [8 P
* 66 - Starts per Hour! `# B3 }& p. r
* 67 - AC Directional Overcurrent Relay" s F; `+ h( A
* 68 - Blocking Relay
# H3 R# U+ G5 L: A% n * 69 - Permissive Control Device2 h h% O9 |: P( T9 P1 r
* 71 - Level Switch: `( E" b' D0 m, c) v9 ?. m- L6 ^
* 72 - DC Circuit Breaker A2 H$ Y; p" t, z# i
* 74 - Alarm Relay
2 O, G/ ?9 p2 |4 F * 75 - Position Changing Mechanism
' v* b, x5 [2 s* N% }& j * 76 - DC Overcurrent Relay9 k) h8 {( a% b/ w4 j
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
( z* g$ {* g2 Q+ s) T * 79 - AC-Reclosing Relay7 ^+ F3 F2 r) @
* 81 - Frequency Relay
) m6 K2 Q' E( B. ~( E( i3 H * 83 - Automatic Selective Control or Transfer Relay, E; E3 l) u% \, p, G8 J
* 84 - Operating Mechanism
8 U9 V; X5 y( U2 x * 85 - Carrier or Pilot-Wire Receiver Relay
3 u% m! y2 ?: D) n o * 86 - Lockout Relay+ V2 k, z$ p) n# r k% e
* 87 - Differential Protective Relay+ p. f5 `5 U4 f+ R) J( c& ^
* 89 - Line Switch
/ i4 h" U$ c5 ~9 `% e) m" ?; _' a * 90 - Regulating Device: d/ |* R; [3 V
* 91 - Voltage Directional Relay
7 z& z8 R! j7 H! D' l" U; X( q * 92 - Voltage and Power Directional Relay
' ^ _% }* V/ U5 V/ F4 | * 94 - Tripping or Trip-Free Relay
/ e9 v2 B4 P/ m0 p * 95 - Reluctance Torque Synchrocheck
" t* i8 r6 {, ]+ ^9 N6 N7 d I0 q/ | * 96 - Autoloading Relay |
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