Relay Device Number Definitions
and Vendor Cross-Reference
Device
Number
Function
ITE
GE
West.
25
ITE-25V
IJS-52D
CVE-1
27
27/59
32
32N
40
46
47
49
49/50/51
50
50/51
51
50/51N
51N
51V
52
55
59
60
62
67
67
76
79
81
87
87B
87T
Relay Device Number Definitions |
|
||||
Device |
Function |
ITE |
GE |
West. |
|
25 |
Synchronism Check | ITE-25S ITE-25V |
IJS-51 IJS-52D |
CVE CVE-1 |
|
27 |
Undervoltage | ||||
| Inverse Time Delay | ITE-27 | IAV | CV | ||
| Instantaneous w/Timer | ITE-27D | - | - | ||
| Instantaneous | ITE-27H | NGV | SV, SVF | ||
27/59 |
Under and Overvoltage | ||||
| Inverse Time Delay | ITE-27/59 | IAV | CV | ||
| Instantaneous w/Timer | ITE-27/59D | - | - | ||
| Instantaneous | ITE-27/59H | CFV, NGV | SV, SVF-1 | ||
32 |
Phase Directional | ITE-32 | CAP, CCP | H-3 | |
| Reverse Power | ITE-32R | ICW | CRN-1 | ||
| Over/Under Power | ITE-32W | CFW | CW | ||
32N |
Ground Directional | ||||
| Dual Polarized | ITE-32D | CFPP | - | ||
| Negative Sequence Polarized | ITE-32Q | - | - | ||
40 |
Loss of Excitation | - | CEH | KLF | |
46 |
Current Balance | ITE-46D | IJC | CM | |
| Negative Sequence Time OC | ITE-46Q | INC, SGC | COQ | ||
| Negative Seq. OC, High Speed | ITE-46H | - | POQ | ||
47 |
UV and Phase Sequence | ||||
| Inverse Time Delay | ITE-47 | ICR | CP, CVQ | ||
| High Speed | ITE-47H | CFV | - | ||
| Instantaneous w/Timer | ITE-47D | - | - | ||
49 |
Thermal Overcurrent | ITE-49 | TMC | BL-1 | |
| Temperature | ITE-49T | IRT | DT-3 | ||
49/50/51 |
Motor Protection | ||||
| Overload,Locked Rotor & Inst. | ITE-49 | - | - | ||
50 |
Instantaneous Overcurrent | ITE-50 | PJC | SC, ITH | |
| Inverse Instantaneous OC | ITE-50I | - | - | ||
| High Dropout Inst. OC | ITE-50H | - | KO-3 | ||
| High Dropout Inst. OC w/Timer | ITE-50D | - | - | ||
50/51 |
Time Overcurrent | ||||
51 |
Inverse | ITE-51I | IAC-51 | CO-7 | |
50/51N |
Very Inverse | ITE-51Y | IAC-53 | CO-9 | |
51N |
Extremely Inverse | ITE-51E | IAC-77 | CO-11 | |
| Short Time | ITE-51S | IAC-55 | CO-2 | ||
| Definite Time | ITE-51D | - | CO-6 | ||
| Fast Curve | ITE-51SP | - | - | ||
| Long Time, Inverse | ITE-51IM | IAC-66A,B | CO-5 | ||
| Long Time, Inverse w/Overload Alarm | ITE51+50D | IAC-66K | COM-5 | ||
| Long Time, Inverse w/Timer (Inrush) | ITE-51 | IAC-66M | COM-5w/t | ||
| Long Time, Very Inverse | ITE-51YM | - | - | ||
| Long Time, Extremely Inverse | ITE-51L | - | - | ||
| Distribution Circuits | ITE-51+50 | IAC-66T | CO-4 | ||
51V |
Voltage Controlled Time Overcurrent | ITE-47H&51 | IGCV | COV | |
| Voltage Restrained Time Overcurrent | - | IJCV | - | ||
52 |
|||||
55 |
Power Factor | - | - | - | |
59 |
Overvoltage | ||||
| Inverse Time Delay | ITE-59 | IAV | CV | ||
| Instantaneous w/Timer | ITe-59D | - | - | ||
| Instantaneous | ITE-59H | NGV, PJV | SV, SVF | ||
| Ground (Low Pickup) | ITE-59G | IAV51D, K | CV-8 | ||
60 |
Voltage Balance | ||||
| Voltage Balance, 2 Circuits | ITE-60 | CFVB | - | ||
| Phase Unbalance w/Timer | ITE-60Q | NBV+SAM | - | ||
62 |
Timing Relay | ||||
| Delay on Pickup | ITE-62K | SAM, RPM | TK, TD | ||
| Delay on Dropout | ITE-62K | - | - | ||
67 |
Directional Time Overcurrent | ||||
| Phase Protection | ITE-32&51 | IBC, JBC | IRV, CR | ||
| Ground, Dual Polarized | ITE-32D&51 | IBCG, JBCC | IRD, CRD | ||
| Ground, Neg. Seq. Polarized | ITE-32Q&51 | - | IRQ, CRQ | ||
67 |
Directional Instantaneous | ||||
| Phase Protection | ITE-32&50 | CJC | KRV | ||
| Ground, Dual Polarized | ITE-32D&50 | CJCG | KRD | ||
| Ground, Neg. Seq. Polarized | ITE-32Q&50 | CNP | KRQ | ||
76 |
DC Overcurrent | ||||
| Instantaneous (High Speed) | ITE-76H | RBP, RBC | D-3,S | ||
| DC relay (Inst., Time Delay, or Rate of Rise) | ITE-76T | - | - | ||
79 |
Reclosing | ||||
| Multi-Shot | ITE-79M | ACR, NLR | RC, DRC | ||
| Single-Shot | ITE-79S | NSR, HGA | SGR | ||
81 |
Underfrequency | ITE-81 | SFF, CFF | CF-1 | |
87 |
Percentage Differential | ITE-87M | CFD | SA-1 | |
87B |
Bus Differential (High Impedance) | ITE-87B | PVD, SBD | KAB | |
87T |
Transformer Differential | ITE-87T | BDD, STD | HU, HU-1 | |