None - GE Multilin 745 Communications Manual

CHAPTER 2: MODBUS PROTOCOL
Table 2–4: 745 memory map (Sheet 25 of 56)
Addr Description
10FF Reserved
Transformer
1100 Nominal frequency
1101 Phase sequence
1102 Transformer type
1103 Rated winding temperature rise
1104 Type of cooling: oil immersed
1105 Load loss at rated load (2 registers)
1107 No-load loss
1108 Top oil rise over ambient (at rated load)
1109 Transformer thermal capacity
110A Winding time constant: oil-immersed
110B Type of cooling: dry
110C Thermal time constant: dry
110D Set initial accumulated loss of life
110E Frequency tracking
110F Reserved
1110 Reserved
↓ ↓
111F Reserved
Transformer winding 1
1120 Winding 1 nominal phase-to-phase voltage
1121 Winding 1 rated load
1122 Winding 1 phase CT primary
1123 Winding 1 ground CT primary
1124 Winding 1 series three-phase resistance
1125 Winding 1 Ground Input Selection
1126 Reserved
1127 Reserved
↓ ↓
112F Reserved
Transformer winding 2
1130 Winding 2 nominal phase-to-phase voltage
1131 Winding 2 rated load
1132 Winding 2 phase CT primary
1133 Winding 2 ground CT primary
1134 Winding 2 series three-phase resistance
1135 Winding 2 Ground Input Selection
1136 Reserved
1137 Reserved
↓ ↓
113F Reserved
Transformer winding 3
1140 Winding 3 nominal phase-to-phase voltage
1141 Winding 3 rated load
1142 Winding 3 phase CT primary
1143 Winding 3 ground CT primary
745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
Range Step
50 to 60 10
--- ---
--- ---
--- ---
--- ---
1 to 20000 1
0.1 to 2000 0.1
1 to 200 1
0.00 to 200.00 0.01
0.25 to 15.00 0.01
- -
0.25 to 15.00 0.01
0 to 20000 1
--- ---
↓ ↓
1 to 20000 ---
1 to 20000 ---
1 to 50000 1
1 to 50000 1
0.001 to 50.000 0.001
None, G1/2, G2/3 ---
↓ ↓
1 to 20000 ---
1 to 20000 ---
1 to 50000 1
1 to 50000 1
0.001 to 50.000 0.001
None, G1/2, G2/3 ---
↓ ↓
1 to 20000 ---
1 to 20000 ---
1 to 50000 1
1 to 50000 1
MODBUS PROTOCOL
Units Format Default
Hz F1 60 Hz
--- F27 0 = ABC
--- F28 3 = Y/d30°
--- F37 1 = 65°C (oil)
--- F39 0 = 0A
kW F101 1250 kW
kW F90 1250=125.0 kW
°C F1 10°C
kWh/°C F3 1.00 kWh/°C
minutes F3 200 = 2.00 min
- F100 0
minutes F3 200 = 2.00 min
hrs x 10 F1 0 hours
--- F30 1 = Enabled
↓ ↓ ↓
kV F90 220.0 kV
MVA F90 1000 = 100 MVA
:1 or :5 A F1 500 A
:1 or :5 A F1 500 A
ohms F53 10700 = 10.7 Ω
--- F103

None

↓ ↓ ↓
kV F90 690 = 69.0 kV
MVA F90 1000 = 100 MVA
:1 or :5 A F1 1500 A
:1 or :5 A F1 1500 A
ohms F53 2100 = 2.100 Ω
--- F103 None
↓ ↓ ↓
kV F90 690 = 69.0 kV
MVA F90 1000 = 100 MVA
:1 or :5 A F1 1500 A
:1 or :5 A F1 1500 A
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