Publicité
Les langues disponibles
Les langues disponibles
ELECTRICAL INFORMATION
1. Employ a licensed electrician to perform the
wiring. All wiring must be done in accordance with
applicable national and local electrical codes.
2. Check that the power supply corresponds with the
electrical rating of the submersible motor and the
control box(if required). Make sure that the control box
electrical rating matches the motor electrical rating.
3. Every installation requires a fused disconnect switch
or circuit breaker.
4. Every installation must be grounded. There must be
a reliable ground connection between the pump and
the distribution panel. The motor lead incorporates a
green grounding conductor.
5. Lightning arrestors are recommended for every
installation. All stainless steel, single phase motors
thru 5HP have built-in lightning arrestors. Any 6" motor
or 4" , 3-phase motor requires a separate lightning
arrestor installed as close to the wellhead as possible.
Install the arrestor in accordance with manufacturers
recommendations. A lightning arrestor provides
protection against induced voltage surges on
6. Mount the control box in an area protected from rain,
snow, direct sunlight or other high temperatures as
this may cause tripping of the overload protector.
Also protect the control box from extreme cold
o
o
(below 25
F/-32
C) as this may have adverse effects
on starting capacitor.
7. A two-wire pump does not require a motor control
box, since all electrical components are built inside
the motor. Fig. 2 shows a typical wiring diagram for
a two-wire installation.
FIGURE 2 - 2 WIRE, 1-Phase, 1/2 thru 1-1/2 HP
Pump Wiring Diagram
Circuit Breaker or
Fuse Disconnect Switch
Incoming 1-Phase Power
1-Phase Submersible Motor
Switch or Timer
Submersible Cable
8. A three-wire, single-phase pump requires a motor
control box incorporating overload relays. Fig. 3
shows a typical wiring diagram for a three-wire,
single-phase installation. Note that a magnetic
contactor must be used if the pressure switch
electrical rating is not sufficient to handle the
submersible motor electrical rating. The pressure
switch would then be incorporated into a pilot
circuit to control the magnetic contactor. Make
the connections at the control box in accordance
with the wiring diagram in the control box to avoid
damage to the motor.
FIGURE 3 - 3-WIRE, 1-Phase, 1/2 thru 3 HP
Pump Wiring Diagram
Pressure Switch (for pilot circuit)
If Magnetic Contactor is used
for starting.
Circuit Breaker
or Fused Disconnect Switch
Incoming 1 Phase Power
Switch or Timer (for direct switching) OR
Magnetic Contactor (w/ pilot circuit)
Note: Order of red, yellow and black may
vary from control box to control box.
Always connect like colors.
Single-Phase
Control Box
L1 L2 R Y B
Red
Yellow
Black
1-Phase Sumbersible Motor
5
Publicité
