CHAPTER 2: PRODUCT DESCRIPTION SPECIFICATIONS
T35 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 2-27
2
Breaking capacity:
CONTROL POWER EXTERNAL OUTPUT (For dry contact input)
Capacity: 100 mA DC at 48 V DC
Isolation: ±300 Vpk
DIRECT OUTPUTS
Output points: 32
DCMA OUTPUTS
Range: –1 to 1 mA, 0 to 1 mA, 4 to 20 mA
Max. load resistance: 12 kΩ for –1 to 1 mA range
12 kΩ for 0 to 1 mA range
600 Ω for 4 to 20 mA range
Accuracy: ±0.75% of full-scale for 0 to 1 mA range
±0.5% of full-scale for –1 to 1 mA range
±0.75% of full-scale for 0 to 20 mA range
99% Settling time to a step change: 100 ms
Isolation: 1.5 kV
Driving signal: any FlexAnalog quantity
Upper and lower limit for the driving signal: –90 to 90 pu in steps of 0.001
2.5.8 Communication protocols
IEC 61850
IEC 61850: Supports IEC 61850 Edition 2.0. See the UR Family Communications Guide and its conformance
statements.
RS232 (Enhanced and standard front panels)
Front port: 19.2 kbps, Modbus RTU
USB (Graphical front panel)
Front port: USB 2.0 type B
RS485
1 rear port: up to 115 kbps, Modbus RTU, DNP 3, IEC 60870-5-103
Typical distance: 1200 m
Isolation: 2 kV, isolated together at 36 Vpk
Specification UL 508 Utility application
(autoreclose scheme)
Industrial application
Operations per
interval
5000 operations,
1 second on,
9 seconds off
5 operations
0.2 seconds on
0.2 seconds off
within 1 minute
10000 operations
0.2 seconds on
30 seconds off
1000 operations
0.5 seconds on,
0.5 seconds off
Break capability
(0 to 250 V DC)
3.2 A at L/R = 10 ms 10 A at L/R = 40 ms 10 A at L/R = 40 ms
1.6 A at L/R = 20 ms
0.8 A
L/R =40ms
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