GE 745 TRANSFORMER MANAGEMENT RELAY

GE Power Management 745 Transformer Management Relay 8-87
8 COMMUNICATIONS 8.3 MODBUS MEMORY MAP
8
0000 0000 0000 1110 14 = Virtual Output 5
F77 16 bits BAD TRANSFORMER SETTINGS
ERROR
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 UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 1 PHASE CT PRIMARY
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 UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 2 PHASE CT PRIMARY
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
Table 8–7: 745 DATA FORMATS (Sheet 27 of 35)
FORMAT
CODE
APPLICABLE BITS DEFINITION
F80 16 bits UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 3 PHASE CT PRIMARY
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 UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 1 GROUND CT PRIMARY
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 UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 2 GROUND CT PRIMARY
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
Table 8–7: 745 DATA FORMATS (Sheet 28 of 35)
FORMAT
CODE
APPLICABLE BITS DEFINITION