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SECTION 12: Motor Protective Devices - 50/60 Hz
12.2 Specifications
Parameter SPP-111P SPP-111P-3RL SPP-231P SPP-233P SPP-235P-XX
1 Phase Line Voltage (±10%) 115 VAC 230 VAC
Load Range
1/3 - 1/2 HP
(.25 - .37 kW)
1/3 - 1 HP
(.33-.75 kW)
1/3 - 1 HP
(.25 - .75 kW)
1/3 - 3 HP
.25 - 2.24 kW)
5 - 15 HP
(3.73 - 11.19 kW)
Frequency 50-60 Hz
Power Consumption (Maximum) 5 W
Operating Temperature -40° to 158° F (-40° to +70° C)
Electrostatic Discharge (ESD) IEC 1000-4-2, Level 2, 4kV Contact, 6 kV Air
Output Contact Rating (SPST)
1/2 HP @ 115 VAC
(17 AMPS MAX)
1 HP @ 115 VAC
(17 AMPS MAX)
1 HP @ 240 VAC
(17 AMPS MAX)
3 HP @ 240 VAC
(17 AMPS MAX)
480 VA @ 240 VAC
Weight .63 lbs (.28 kg)
1.6 lbs (.73 kg)
w/enclosure
.63 lbs (.28 kg) 1.6 lbs (.73 kg)
Enclosure None NEMA 3R None NEMA 3R w/ LENS
Current Transformer Ratio N/A N/A N/A N/A
SPP-235-75 – 50:5
SPP-235-100 - 75:5
SPP-235-150 -
100:5
Operating Points
Overload 125 % of Calibration Point
Underload (Dry Run) ~80% of Calibration Point
Overvoltage Trip Point 132.5 VAC 265 VAC
Undervoltage Trip Point 95 VAC 190 VAC
Nu mber of Restarts allowed in a 60sec.
Period before lockout (Rapid Cycle
Timer)
4
Trip Delay Time (Overload) 5s
Trip Delay Time (Dry Run) 2s
Restart Delay Time
Overvoltage/Undervoltage Delay 5s
Al l other faults (Dry Run Rec. Timer) 2-225 min
Terminal
Wire Gauge
N/A
12-22
Maximum Torque 7 in-lbs
12.1 How They Work
Pentek
®
motor protectors are designed to protect single
phase pumps from dry run, dead head, jammed impeller,
and over & under voltage conditions.
A calibration adjustment allows the motor protector to
be calibrated to specific pumping applications, thereby
reducing the possibility of false or nuisance tripping. A
micro drive based voltage and current sensing circuit
monitors for power fluctuations, over-current, and under-
current conditions. When an abnormality, such as loss
of suction, is detected, the motor protector deactivates
its output relay and immediately disconnects the pump
motor. The motor protector then activates its user-
selectable “Restart Delay” (Dry run recovery) timer.
When the timer counts to zero or power is removed and
reapplied, the motor protector reactivates its output relay
and turns the pump back on.
An infrared LED communicates directly with a hand-held
diagnostics tool called the Informer (sold separately). The
Informer displays 16 parameters including calibration
point, trip point, running points, and last fault.
NOTICE: The use of flow restrictors or unusually high
head pressures at the time of calibration may interfere
with the detection of dead head conditions.
Motor Protection
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