Measurement, Protection and Control
28
SecoVac 3.3kV-27kV Embedded Pole Vacuum Circuit Breaker
Preventative maintenance
The Multilin 3 Series allows users to track
relay exposure to extreme environmental
conditions by monitoring and alarming
at high temperatures. This data allows
user to proactively schedule regular
maintenance work and upgrade activities.
All relays utilize EnerVista
TM
setup
software for communication, monitoring
and metering. Actual values, setpoints,
status, trending, and waveform capture
information may all be viewed via
the software, and can be used for
troubleshooting.
SecurityEnerVista
TM
LaunchpadEnhanced diagnostics
Security audit trail
The Multilin 3 Series monitors security
and reliability of asset protection. The
Multilin 3 Series protection devices
relay setting and command changes,
allowing the user to quickly identify
changes made to the relay.
EnerVista™ Launchpad is a complete set of
that is included at no extra charge with the SR
Relays.
ő
Set up the Multilin 3 Series Relays - and any
other Multilin device - in minutes. Retrieve
and view oscillography and event data at
the click of a button
ő
Build an instant archive on any of the
latest Multilin manuals, service advisories,
ő
Automatic document and software version
updates via the internet and detailed e-mail
350 RELAY
TRIP
BUS
LOAD
3
1
52
CLOSE
50G/
51G
50P 50N
79
50G 51G
22
21
METERING
TRANSIENT RECORDER
EVENT RECORDER
51N51P
50_2
111
49
1
1
27P
59P 27X 59X 59_2 59N 81U 81O
CLP
50BF 79
11111 12 2
MONITORING
BUS VT
Device
Number
Function
27P Phase Undervoltage
27X Auxiliary Undervoltage
49 Thermal Model
50P Phase Instantaneous Overcurrent
50N Neutral Instantaneous Overcurrent
50G Ground/Sensitive Ground
Instantaneous Overcurrent
50BF Breaker Failure
50_2 Negative Sequence Overcurrent
51P Phase Timed Overcurrent
51G Ground Timed Overcurrent
51N Neutral Timed Overcurrent
59P Phase Overvoltage
59X Auxiliary Overvoltage
59N Neutral Overvoltage
59_2 Negative Sequence Overvoltage
67G Ground Directional Overcurrent
67N Neutral Directional Overcurrent
79 Autoreclose
81U Underfrequency
81O Overfrequency
CLP Cold Load Pickup
ANSI Device Numbers & Functions
Latched Lockout available as a standard feature
User Interface
Protection Features
ő
SETPOINT GROUP 1, 2:
These indicators are continuously on if corresponding group provides settings for protection elements.
TRIP:
Indicator turns on when relay detects a trip condition.
Operates the trip relay to open the breaker.
ALARM:
PICKUP:
Indicator lights steady when any protection feature pickup threshold exceeded.
ő
DISPLAY:
4 line text for easy viewing of key data.
ő
LEDs:
10 LED indicators for quick diagnostics.
ő
KEYPAD:
Ten button keypad for access to device interrogation and change of settings.
ő
FRONT PORT:
Electrically isolated front USB communication port.
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