2-2 D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
PRODUCT DESCRIPTION CHAPTER 2: PRODUCT DESCRIPTION
2
115.2 kbps. All serial ports use the Modbus RTU protocol. The IEC 60870-5-103 protocol is supported on the RS485
interface. IEC 60870-5-103, DNP, and Modbus cannot be enabled simultaneously on this interface. Also only one of the
DNP, IEC 60870-5-103, and IEC 60870-5-104 protocols can be enabled at any time on the relay. When the IEC 60870-5-103
protocol is chosen, the RS485 port has a fixed even parity and the baud rate can be either 9.6 kbps or 19.2 kbps. The
100Base-FX or 100Base-TX Ethernet interface provides fast, reliable communications in noisy environments. The Ethernet
port supports IEC 61850, Modbus/TCP, TFTP, and PTP (according to IEEE Std. 1588-2008 or IEC 61588), and it allows access
to the relay via any standard web browser (D30 web pages). The IEC 60870-5-104 protocol is supported on the Ethernet
port. The Ethernet port also supports the Parallel Redundancy Protocol (PRP) of IEC 62439-3 (clause 4, 2012) when
purchased as an option.
Secure Routable GOOSE (R-GOOSE) is supported with software options.
Settings and actual values can be accessed from the front panel or EnerVista software.
The D30 uses flash memory technology that allows field upgrading as new features are added. Firmware and software are
upgradable.
The following single-line diagram illustrates the relay functionality using American National Standards Institute (ANSI)
device numbers.
Table 2-1: ANSI device numbers and functions supported
Device
number
Function Device
number
Function
21G Ground Distance 51_2 Negative Sequence Time Overcurrent
21P Phase Distance 52 AC Circuit Breaker
25 Synchrocheck 59N Neutral Overvoltage
27P Phase Undervoltage 59P Phase Overvoltage
27X Auxiliary Undervoltage 59X Auxiliary Overvoltage
32N Wattmetric Zero-Sequence Directional 59_2 Negative Sequence Overvoltage
49 Thermal Overload Protection 67N Neutral Directional Overcurrent
50DD Current Disturbance Detector 67P Phase Directional Overcurrent
50G Ground Instantaneous Overcurrent 67_2 Negative Sequence Directional Overcurrent
50N Neutral Instantaneous Overcurrent 68 Power Swing Blocking
50P Phase Instantaneous Overcurrent 78 Out-of-Step Tripping
50_2 Negative Sequence Instantaneous Overcurrent 79 Automatic Recloser
51G Ground Time Overcurrent 81R Rate of change frequency
51N Neutral Time Overcurrent 81U Underfrequency
51P Phase Time Overcurrent
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