Aclara I-210+, Руководство пользователя

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I-210+ User Manual
15
Chapter 3 • Operating Instructions
Normal LCD Characteristics
In Normal Display mode, the meter display is always visible. Normal Display
items are selected by the customer at the time of ordering the meter and are loaded
into the meter at the factory.
The display segments are illuminated when the meter powers up and every 24
hours when the meter stores information to NVRAM. All of the annunciators are
illuminated and eight is displayed in each of the kWh display positions.
Energy (kWh)
The I-210+ displays the energy accumulated in the top row of the LCD. The
customer has an option, at the time of ordering, to select four or five digit display
of the accumulated energy. This option can only be set at the factory. The LCD
also has an annunciator, kWh, (under the kWh display and to the right) which is
displayed whenever energy is indicated. The energy display is refreshed every five
seconds.
Transformer Factor
The I-210+ meter can also store and utilize a transformer factor (TF). The default
value for TF is 1. The TF value impacts the energy and demand values that are
displayed on the LCD. For example, the energy displayed on the LCD is the
product of the energy accumulated by the meter times the TF. This is frequently
referred to as a primary reading. The TF is calculated by multiplying the current
transformer ratio (CTR) by the potential transformer ratio (PTR).
Accumulation Mode
The meter accumulates energy in four detenting modes. Only one of these
accumulators may be selected for the displayed energy quantity at a time. The
displayed accumulation depends on the energy direction and the accumulation
mode that is selected.
Del Received Energy:
The magnitude of the delivered energy and received energy are added together.
This mode of operation is known as unidirectional because the meter registration
will always be positive, regardless of the direction of energy flow. This
accumulation mode may deter tampering by meter inversion. This mode is enabled
by default if the accumulation mode is not specified when the meter is ordered.
Delivered Only Energy:
Only delivered energy is accumulated. Received energy is not accumulated.
Received Only Energy:
Only received energy is accumulated as a positive quantity. Delivered energy is
not accumulated.