SEL- 2664S Data Sheet
Schweitzer Engineering Laboratories, Inc.
4
Profile Report Monitoring
Profile report monitoring provides a periodic snapshot
(selectable rate of every 1, 5, 15, 30, or 60 minutes) of as
many as 17 selectable analog quantities from the
complete list of analog quantities the SEL-2664S
generates. Examples of analog quantities available
include the following:
➤
Stator insulation resistance
➤
Injected rms current
➤
Neutral ground resistance
➤
Third-harmonic neutral voltage
When used with the SEL-2664 Field Ground Module, the
relay can also record the field insulation resistance.
The SEL-2664S maintains profile information in a
nonvolatile buffer memory. The memory can hold data for
9800 time-stamped entries.
Automation
Flexible Control Logic and Integration Features
The SEL-2664S has three independently operated serial
ports: one front and one rear EIA-232 serial port and one
rear fiber-optic serial port. Also, the relay supports dual
fiber Ethernet ports in the rear. The relay needs no special
communications software. You can use any system that
emulates a standard terminal system. Establish
communication by connecting computers, modems,
protocol converters, printers, an SEL real-time
automation controller (RTAC), SEL communications
processor, SEL computing platform, SCADA, and/or
RTUs for local or remote communication. Refer to
for a list of communications protocols available in
the SEL-2664S.
Neutral Currents (A sec)
Magnitude of neutral currents at the injected frequencies in secondary amperes
Stator Insulation (k
)
Resistance of the stator insulation to ground at the injected frequencies in kilohms, primary
a
Secondary and Primary reference the Neutral Grounding Transformer (NGT), not CTN.
b
Neutral current (A sec) is shown if CTN_LOC := SEC; otherwise, it is hidden.
Table 1
Metered Quantities
(Sheet 2 of 2)
Quantities
Description
Table 2
Communications Protocols
Type
Description
Simple ASCII
Plain language commands for human and simple machine communication.
Use for metering, setting, self-test status, event reporting, and other functions.
Compressed ASCII
Comma-delimited ASCII data reports.
Allows external devices to obtain relay data in an appropriate format for direct import into spreadsheets and
database programs. Data are checksum protected.
Fast Meter and Fast
Operate
Binary protocol for machine-to-machine communication.
Quickly updates SEL communications processors, RTUs, and other substation devices with metering informa-
tion, relay elements, I/O status, time tags, and summary event reports. Data are checksum protected. Binary and
ASCII protocols operate simultaneously over the same communications lines, so there is no loss of control, sta-
tus, or metering information while a technician transfers an event report.
Fast SER Protocol
Provides SER events to an automated data collection system.
Modbus
Serial or Ethernet-based Modbus with point remapping.
Includes access to metering data, protection elements, contact I/O, targets, SER, relay summary event reports,
and settings.
DNP3
Serial or Ethernet-based DNP3 protocols.
Provides default and mappable DNP3 objects that include access to metering data, protection elements, Relay
Word bits, contact I/O, targets, SER, and relay summary event reports.
IEC 61850
Ethernet-based international standard for interoperability among intelligent devices in a substation.
Operates remote bits and I/O. Monitors Relay Word bits and analog quantities.
SNTP
Ethernet-based protocol that provides time synchronization of the relay.
