Hypertherm HyPrecision 15, Operator'S Manual

Page: 188 / 194

188 HyPrecision15/30/50 Operator Manual 808240
9 – Installation
Inst
al
lati
on
Connect the electrical power

Pumps equipped for certain foreign electrical power can have different connection requirements. For connection
information, refer to the electrical schematic.

Some pump models have a knockout at the bottom of the electrical enclosure for routing electricity into the enclosure.

Power requirements are found on the data plate on the back of the pump and on the inside of the electrical enclosure
door.
1. Connect the electrical supply to the primary circuit breaker. This breaker is identified on the technical drawing and
inside the electrical enclosure as MAIN C.B.
2. Attach a ground leg to the grounding lug inside the electrical enclosure. Use this table to find the minimum
cross-sectional area of the external copper ground leg.

The leakage current of HyPrecision pumps can be up to 160 mA. To reduce the effects of a high leakage current,
connect the pump to a dedicated supply transformer that has separate windings.
3. Connect the incoming electrical power to the panel inside the electrical enclosure. Refer to the electrical enclosure
schematic.

The voltage, frequency, full load amperes, overload settings, and wire sizes differ depending on the pump size.
WARNING
A line disconnect switch for incoming electrical power must be installed near the pump’s power supply to
serve as a supply-voltage disconnecting (isolating) device.
WARNING
The primary incoming electrical power must be installed by a licensed electrician and must be in compliance
with all applicable codes.
CAUTION
The primary feed protection device (circuit breaker or fuse) must be sized to handle inrush and steady-state
current. Use a motor-start circuit breaker or the equivalent if time-delay high-inrush fuses are not permitted
by local or national codes.
When connecting electrical power to the pump, it is the buyer's responsibility to investigate and comply with
all local codes.
Use electrical parts that are certified by national or local electrical codes.
If the cross-sectional area (S mm 2 ) of the copper
phase conductors supplying the equipment is
The minimum cross-sectional area (S
p
mm
2
) is
equal to or greater than 16 equal to S
greater than 16 and less than or equal to 35 16
greater than 35 S/2