GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual page 297

8 COMMUNICATIONS
Table 8–7: 745 DATA FORMATS (Sheet 27 of 35)
FORMAT APPLICABLE BITS
CODE
0000 0000 0000 1110 14 = Virtual Output 5
F77 16 bits
0000 0000 0000 0000 0 = None
0000 0000 0000 0001 1 = W1-W2 Ratio Mismatch
0000 0000 0000 0010 2 = W1-W3 Ratio Mismatch
0000 0000 0000 0011 3 = Load Loss
0000 0000 0000 0100 4 = W1 Eddy-Current Loss
0000 0000 0000 0101 5 = W2 Eddy-Current Loss
0000 0000 0000 0110 6 = W3 Eddy-Current Loss
0000 0000 0000 0111 7 = W1 Rated Load
0000 0000 0000 1000 8 = W2 Rated Load
0000 0000 0000 1001 9 = W3 Rated Load
F78 16 bits
For CT PRIMARY ≤ 2 A
Format: Unsigned value, 3 decimal places
Example: 1.234 stored as 1234
For 2 A < CT PRIMARY ≤ 20 A
Format: Unsigned value, 2 decimal places
Example: 12.34 stored as 1234
For 20 A < CT PRIMARY ≤ 200 A
Format: Unsigned value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY ≤ 2000 A
Format: Unsigned value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Unsigned value, scaled by 10
Example: 12340 stored as 1234
F79 16 bits
For CT PRIMARY ≤ 2 A
Format: Unsigned value, 3 decimal places
Example: 1.234 stored as 1234
For 2 A < CT PRIMARY ≤ 20 A
Format: Unsigned value, 2 decimal places
Example: 12.34 stored as 1234
For 20 A < CT PRIMARY ≤ 200 A
Format: Unsigned value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY ≤ 2000 A
Format: Unsigned value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Unsigned value, scaled by 10
Example: 12340 stored as 1234
GE Power Management
DEFINITION
BAD TRANSFORMER SETTINGS
ERROR
UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 1 PHASE CT PRIMARY
UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 2 PHASE CT PRIMARY
745 Transformer Management Relay
8.3 MODBUS MEMORY MAP
Table 8–7: 745 DATA FORMATS (Sheet 28 of 35)
FORMAT APPLICABLE BITS
CODE
F80 16 bits
For CT PRIMARY ≤ 2 A
Format: Unsigned value, 3 decimal places
Example: 1.234 stored as 1234
For 2 A < CT PRIMARY ≤ 20 A
Format: Unsigned value, 2 decimal places
Example: 12.34 stored as 1234
For 20 A < CT PRIMARY ≤ 200 A
Format: Unsigned value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY ≤ 2000 A
Format: Unsigned value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Unsigned value, scaled by 10
Example: 12340 stored as 1234
F81 16 bits
For CT PRIMARY ≤ 2 A
Format: Unsigned value, 3 decimal places
Example: 1.234 stored as 1234
For 2 A < CT PRIMARY ≤ 20 A
Format: Unsigned value, 2 decimal places
Example: 12.34 stored as 1234
For 2 A < CT PRIMARY ≤ 200 A
Format: Unsigned value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY ≤ 2000 A
Format: Unsigned value
Example: 1234 stored as 1234
For CT PRIMARY greater than 2000 A
Format: Unsigned value, scaled by 10
Example: 12340 stored as 1234
F82 16 bits
For CT PRIMARY ≤ 2 A
Format: Unsigned value, 3 decimal places
Example: 1.234 stored as 1234)
For 2 A < CT PRIMARY ≤ 20 A
Format: Unsigned value, 2 decimal places
Example: 12.34 stored as 1234
For 200 A < CT PRIMARY ≤ 200 A
Format: Unsigned value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY ≤ 2000 A
Format: Unsigned value
Example: 1234 stored as 1234
DEFINITION
UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 3 PHASE CT PRIMARY
UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 1 GROUND CT PRIMARY
UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 2 GROUND CT PRIMARY
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