APC SurgeArrest PM 208/120V 80KA, Non-modular PMF2X-A Manuel D’Utilisation
Codes de produits
PMF2X-A
10
Installation and Operation Manual
Location of Surge Protective
Device (SPD)
Device (SPD)
Install SPDs on the load side of the main overcurrent protection to comply
with NEC
with NEC
®
Article 285 for Type 2 SPD.
Locate the SPD as close as possible to the circuit being addressed to
minimize the wire length and optimize SPD performance. Avoid long wire
runs so that the device will perform as intended. To reduce the impedance
that the wire displays to surge currents, the phase, neutral, and ground
conductors (wye and high-leg delta configurations), or phase conductors
(delta configurations), must be routed within the same conduit and tightly
bundled or twisted together to optimize device performance. Avoid sharp
bends in the conductors. See Figure 2.
minimize the wire length and optimize SPD performance. Avoid long wire
runs so that the device will perform as intended. To reduce the impedance
that the wire displays to surge currents, the phase, neutral, and ground
conductors (wye and high-leg delta configurations), or phase conductors
(delta configurations), must be routed within the same conduit and tightly
bundled or twisted together to optimize device performance. Avoid sharp
bends in the conductors. See Figure 2.
Figure 2:
SPD Wiring for Wye and High-Leg
Delta Configurations
Delta Configurations
Phases
Neutral
Ground
Neutral bus
Ground bus
Panel
Phase A
Phase B
Phase C
Neutral
Ground
Interconnect wiring
— Minimize length
—Avoid sharp bends
— Minimize length
—Avoid sharp bends
SPD
To load(s)
Electrical