Introduction
6
alarm activity, while the trip log stores tripping information. All pro-
tective relay settings are stored in nonvolatile memory.
1.8
Metering Functions
The SB Energy-Comm trip unit measures and stores several
types of metered data for evaluation or monitoring. The metering
includes real-time measurement of current, voltage and power
values, and demand measurements. It also includes additional
options, including programmable protective relay and alarm func-
tions, harmonic distortion analysis, and separate logs to record
event and min/max data.
1.9
Features By Model Number
Table 1.4
summarizes the features available with each of the four
trip unit models. The full-featured models (SBxxTP02 and
SBxxTP02G) offer more alarm functions; the extended protective
relay functions, and harmonic analysis that the base models
(SBxxTP01 and SBxxTP01G) do not. Models with Ground Fault
protection have that additional protective function available. This
manual describes all these functions. Your particular model may
or may not have all the features discussed in this manual.
Table 1.4
Features by Model Number
Features
Models
SBxxTP01
SBxxTP01G
SBxxTP02
SBxxTP02G
Integral Keypad and Display
Voltage/Current Waveform Displays
✓
✓
✓
✓
Protective Functions
Long Time, Short Time, Instantaneous
✓
✓
✓
✓
Metering Functions
Volts, Amps, PF, Frequency, Watts, VARs, VA, Crest Factor,
Ampand Watt Demand, Voltage and Current Waveforms,
Voltage and Current Unbalance
✓
✓
✓
✓
Communications
PC (RS-232), ACCESS (RS-485)
✓
✓
✓
✓
Counters
Breaker Test (Trip/No Trip), Mechanical Counter,
Interruption Level Fault Counter
✓
✓
✓
✓
Security
Password Protection
✓
✓
✓
✓
Event Log
Time-Stamped –10 Most Recent Events
✓
✓
✓
✓
Trip Log
Time-Stamped – 5 Most Recent Trips
✓
✓
✓
✓
Alarms
(Alarm Only) Overcurrent, Gnd. Overcurrent, Over Amp Demand,
Over kW, Over kW Demand, Over KVAR, Over KVA, Under/Over
PF
✓
✓
✓
✓
Advanced Alarms
Total Harmonics
✓
✓
Min./Max. Logs
Volt/Amp., Power, PF, Frequency, %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
✓
✓