OutBack Power HiQ TS208-5k75, Инструкция по установке и безопасности

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PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B
13
Grounding
The metal enclosure of the inverter must be grounded according to NEC 690.43.
Equipment ground is provided through the AC connection. Optionally, grounding
may be achieved also through attaching an Equipment Ground Conductor (EGC) to
a lay-in lug (not provided) attached to the chassis as shown in Figure 7.
Grounding may also be achieved using the mounting bolts to any properly
grounded metallic structure provided a paint-cutting washer is employed, such as
a stainless steel star washer.
Neutral
All 5 conductors (L1, L2, L3, neutral, ground) must be connected and neutral must be bonded to earth ground.
Failure to do so can damage the unit and void the warranty. Note that particular care is required to ensure
that an effective neutral connection is maintained when a transformer forms part of the installation.
The inverter exports power only on the “line” (hot) conductors. The neutral conductor is used solely for
voltage sensing and power line communications.
Use with a Transformer
While ProHarvest inverters may be used with a transformer, care must be taken to ensure proper wiring.
Figure 8: Use of the ProHarvest with an isolating transformer
CAUTION: Hazard to Equipment
•
Neutral MUST be bonded to equipment ground or damage to the inverter may result.
•
When an isolating transformer is inserted into the circuit, the neutral may lose any
path to equipment ground that was provided elsewhere.
•
Figure 8 shows an example where the load center bonds the neutral to equipment
ground. Many other system configurations and methods are also possible.
Site Surge Suppression
CAUTION: Hazard to Equipment
Depending on physical location, atmospheric effects, utility abnormalities, and local loads
the utility connection can suffer from repeated disturbances which can damage
equipment. It is recommended that an appropriate surge suppressor be installed near the
Point of Common Connection with the utility.
ProHarvest
Inverter
L1, L2, L3 Phases
(Primary)
Utility connection
Isolating
Transformer L1, L2, L3 Phases
(208 Vac Secondary)
L1, L2, L3 Phases
(208 Vac)
Load Center
Neutral Neutral
Neutral Bar
Ground Bar
Equipment Ground Ground
Figure 7: Example ground lug