7/30/01
summer 2001
53
nRequirements:
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n1. The
generating facility shall be metered with a Montana Power Company utility
installed meter.
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n2. The
generating facility shall be interconnected to the Montana Power Company
utility system through a static inverter that complies with the
following requirements:
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n A. Institute of Electrical and Electronics
Engineers (IEEE) standard 929, “Recommended Practice for Utility Interface of Photovoltaic
(PV) Systems.”
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n B. Underwriters Laboratories (UL) Subject
1741, “Standard for Static Inverters and Charge Controllers for Use in
Photovoltaic Power Systems”
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n3. The
generating facility shall be installed in conformance with all applicable
requirements of the National Electric Code and local building or electrical codes.
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n4. The
owner of the generating facility and/or the owner’s agents or representatives shall agree not to
alter the factory set points for the inverter without first notifying the
utility in writing of the owner’s intent to make any such modifications.
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n5. The generating
facility shall be capable of being manually isolated from the utility system by means
of an external, visible load break, electrically located between the generating
facility and
the utility system. If the
customer installs a separate disconnect switch for this purpose, the disconnect
switch shall be located within 10 feet of the customer’s electric
meter and shall be clearly marked “Generator Disconnect Switch”.
This switch shall be readily accessible to utility
personnel at all times, and the utility shall have the right to lock this
switch open whenever necessary to maintain safe electrical
operating conditions. If the customer
does not install a separate disconnect switch for this purpose, the utility shall be
permitted to remove the customer’s electric meter to provide the required
manual isolation of the generating facility.
The customer understands that removal of the electric meter isolates
the customer’s electric service as well as the generating facility, and that electric service will
not be restored until the meter is replaced.
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n6. The
utility will assume that the customer’s generating facility is serving the customer
load while the utility system is disconnected as described in
Paragraph 5 above. Before
connection to the utility system is reestablished, the generator must be taken
completely off line. When the customer
generator is completely off line, the utility service may be restored. At that point in time, the customer
generator may reconnect in parallel to the utility system.