
9
SB-EC Trip Units
Two types of interchangeable trip units for the SB Encased Systems
Breakers are available. The basic type “TL” Trip Unit features a full
range of industry standard protective settings. The high-performance
Systems Breaker Energy Communicating Trip Unit (SB-EC Trip Unit)
offers advanced metering, protective relaying, time-stamped logs,
and power quality monitoring functions, including an integral keypad
and LCD graphical display for menu-driven system configuration and
real-time voltage and current waveforms displays. Both units offer
unique models to provide an efficient combination of options versus
cost for each application.
How To Order SB-EC Trip Units
There are four available models built around a full function overcurrent protective unit, including Communications, Basic Alarms and Logs,
Metering with Waveform Displays, Operation and Fault Counters, and Security Features as standard. A Potential Transformer Module and
External Power Supply are required for Communications and Metering Functions along with a Rating Plug and Auxiliary Wiring Kit for trip
unit operation and must be ordered separately. The PT Module and Power Supply are external, panel mounted components. Refer to the
following tables.
Example SB-EC Trip Unit Order:
SB04TP01G
Trip Unit
1
+ SBEPS
Power Supply
2
+ SBPTM480
PT Module
3
+ SBECDAK
Wire Kit
4
1
Refer to Tables D & E
2
Refer to Table F
3
Refer to Table G
4
Refer to Table H
Breaker SB Frame SB-EC Trip Unit Functionally Ground Fault Protection
1
Type Rating (A) Trip Unit (See Table 2)
SB 04 TP 01 G
SB 04 = 400 TP 01 = standard model including real-time voltage G = ground fault
08 = 800 and current waveform displays, overcurrent protection
12 = 1200 protection, metering and communications
16 = 1600
20 = 2000 02 = premium model including real-time voltage Blank = no ground fault
25 = 2500 and current waveform displays, overcurrent protection
32 = 3200 protection, metering and communications
40 = 4000 + protective relay functions + min/max logs
50 = 5000 + power quality harmonic analysis
Table E - SB-EC Trip Unit Catalog Numbering
1
Residual and Ground Return sensing schemes available. Order correct Neutral Current Transformer separately for 3 phase, 4 wire systems. See page 16.
SB-EC Trip Unit
System Status
Indicators
Yellow LED
indicates an alarm
condition, red LED
indicates a trip
condition
LCD Display:
provides fast,
convenient display of
menu options and
device status
Frame Rating
Indication:
indicates the frame
rating of the circuit
breaker with which
the trip unit is used
ESC Key:
used to exit menus
Up and Down
Arrows:
for convenient
scrolling through
choices on LCD
Serial Port:
for direct
connection to a
personal computer.
Enter Key:
for selection
of choices or
moving between
selections
Test Connector:
easy connection
to portable TS-31
test set for
advanced testing
System Check
Indicators:
Two green LED’s
blink to indicate that
protective and
metering systems
are working correctly
RS485
ACCESS Communications
Models and List Prices
Features
SBxxTP01 SBxxTP01G SBxxTP02 SBxxTP02G
Integral Keypad and Display
✓ ✓ ✓ ✓
Voltage/Current Waveform Displays
Protective Functions
Long Time, Short Time, Instantaneous
✓ ✓ ✓ ✓
Metering Functions
Volts, Amps, P.F., Frequency, Watts,
VARs, VA, Crest Factor, Amp and Watt
✓ ✓ ✓ ✓
Demand, Voltage and Current Wave-
forms, Voltage and Current Unbalance
Communications
PC (RS-232), ACCESS (RS-485), ZSI
✓ ✓ ✓ ✓
Counters & Test Functions
Breaker Test (Trip/No Trip), Mechanical ✓ ✓ ✓ ✓
Counter, Interruption Level, Fault Counter
Security
Password Protection
✓ ✓ ✓ ✓
Event Log
Time-stamped-10 Most Recent Alarms
✓ ✓ ✓ ✓
Trip Log
Time-stamped-5 Most Recent Trips
✓ ✓ ✓ ✓
Alarms
(Alarm Only) Overcurrent, Gnd. Over-
✓ ✓ ✓ ✓
current, Over Amp Demand, Over kW,
Over kW Demand, Over KVAR, Over
KVA, Under/Over P.F.
Advanced Alarms
Total Harmonics
✓✓
Min./Max. Logs
Volt/Amp, Power, PF, Freq., %THD
✓✓
Harmonic Analysis
Up to 19th Per Phase, THD
✓✓
Protective Relay Functions
(Alarm and/or Trip)
Neutral Overcurrent, Current Balance,
✓✓
Under/Over Voltage, Voltage Unbalance,
Reverse Power, Under/Over Frequency
Ground Fault Protection
Residual or Ground Return
✓ ✓
Table D - SB-EC Trip Units
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