CHAPTER 2: PRODUCT DESCRIPTION PRODUCT DESCRIPTION
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 17
Figure 12: Typical front panel fault report display
Sequence of events recorder
The D90
Plus
contains an advanced sequence of events recorder with the capability to
record up to 8,000 events.
Event information can be accessed either through the front panel or the EnerVista
Launchpad software. The very high sampling rate and large amount of storage capacity
available for data recording in the D90
Plus
can eliminate the need for installing costly
stand-alone event recording equipment.
Fault reports and fault locator
The D90
Plus
supports a fault report and associated fault location data. The fault report
stores data pertinent to an event that is triggered and provides the distance to the fault
location. A maximum of 15 records are stored in the nonvolatile memory providing a
comprehensive summary of events associated with a fault.
Transient recorder
The transient recorder captures critical system data during a transient event. It is tailored
to capture shorter duration events, such as faults at high resolution. The transient recorder
can be programmed to sample at 256 samples per cycle. The D90
Plus
can store up to 64
records in nonvolatile memory with up to one minute of storage capacity for all 16 analog
channels and 128 digital channels. The transient recorder incorporates integrated
triggering. Any monitored channel can be configured to trigger the recorder.
Disturbance recorder
Longer-term events are monitored by disturbance recorders and include voltage sag,
swell, and overloading. Any configured analog or digital channel can trigger the
disturbance recorder. The D90
Plus
can store up to 64 records in nonvolatile memory with up
to five minutes of storage capacity.
Communications features
The D90
Plus
communications module is dedicated to processing the IEC 61850, DNP 3.0,
and IEC 60870-5-104 protocols. This module provides redundant Ethernet ports, each with
10/100Base-TX and 100Base-FX connectors.
Modbus RTU and DNP 3.0 are also available as default protocols through the RS485 port or
the CPU Ethernet ports (slot D).
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