User's Manual

ANSI Electric Meter v3.1 User’s Guide 3
 Meter display provides a scrolling list of up to 30 items (with an ID code for
each item) including energy data, time, date, remaining credit (if prepay
metering is in effect), tariff-specific energy values, and more.
 Push button provides immediate advancement to next display item and is
used to silence the audible prepay low credit alarm.
 Display characters and icons indicate various operating conditions, such as:
when main cover is properly installed, that PLC communication has occurred,
and the open/closed state of the load disconnect and control relay.
 Nameplate message indicators are illuminated on the display when a listed
item or action is programmed into the meter.
 Load disconnect switch with prepay and remote disconnect capability. When
remotely set to off state, cannot be turned on manually. 200 amps maximum.
 Data log intervals of 5, 15, 30, 60 minutes, or 1-day.
 Up to 180 days of single-channel load profile memory storage in meter at a
60-minute log interval and 2094 days at a 1-day interval. Up to 8 channels
can be recorded on the same interval.
 Four Time-of-Use kWh and kvarh tariff registers. Perpetual calendar: 4
seasons, 15 holidays. 2 holiday day schedules per season, 3 separate day
schedules per season, 10 tariff periods per day schedule.
 A second Time-of-Use calendar schedule can be programmed into the meter
for activation at a preset future date.
 Daylight Saving Time changeover with perpetual calendar.
 Battery-backed Real Time Clock (RTC) to maintain time accuracy and
tamper detection during power outages.
 Alarms for customer tamper and meter operating variances.
 Power quality measurements for: sag, swell, number of over-current
occurrences, number of long power outages, duration and time of the last 10
long power outages, number of short power outages, maximum and minimum
frequency, phase loss, and total harmonic distortion (THD) events.
 Prepay metering. Energy credit is loaded into the meter and customer power
is automatically turned off when credit becomes zero. Emergency credit
allows power to continue after standard credit is exhausted, with the option
of a reduced power mode. A configurable audible alarm warns customer of
low credit.
 Data transmission accuracy ensured using CRC for optical communication
and authentication and handshaking for PLC communication.
 Security is provided by password protection for optical communication,
encryption and authentication for PLC communication.
 Signal relay for control of external contactor or other devices, with activation
linked to the currently active tariff period or controlled by remote command
(optional feature).
 KYZ pulse output (optional feature).
 Demand metering. The meter optionally offers various types of demand
calculations that can be performed to measure the peak active and reactive
power being delivered to the system. Demand measurements are useful in
that they provide information on peak usage as opposed to accumulation over
time. Consult Chapter 4 for more information on demand metering.