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Sl. No.
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Clause. No.
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Existing points in the Technical
Specification
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Amended as
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1
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14.2
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The
LCD display should have a wide viewing angle of 45 ˚C to 60 ˚C
and up to one-meter distance, for clear visibility if
the display of the meter reading. Large viewing area with
large display icons is preferred. However, the display size
area should generally be of about 60 x20 mm. The registered
parameters shall not be affected
by loss of power. The display shall not be affected
by electrical and magnetic disturbances. The meter shall
make use of non-volatile memory capable of storing and
retaining all the data required to be stored, without the
help of any power source or battery back up and shall have a
minimum retention time of 12 years under un-powered
condition. The minimum character height x width shall be 10
x 5 mm Dot-Matrix type
LCD display is not acceptable. The accuracy of display
parameters for all parameters shall be matching with the
accuracy class of meter as per IS.
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The
LCD display should have a wide viewing angle of 45 ˚C to 60 ˚C
and up to one-meter distance, for clear visibility if
the display of the meter reading. Large viewing area with
large display icons is preferred. However, the display size
area should generally be of about 60 x20 mm. The registered
parameters shall not be affected
by loss of power. The display shall not be affected
by electrical and magnetic disturbances. The meter shall
make use of non-volatile memory capable of storing and
retaining all the data required to be stored, without the
help of any power source or battery back up and shall have a
minimum retention time of 12 years under un-powered
condition. The minimum character height x width shall be 10
x 5 mm Dot-Matrix type
LCD display is not acceptable. The accuracy of display
parameters for all parameters shall be matching with the
accuracy class of meter as per IS. Slight variation in
display size area & digit size is acceptable provided
the display parameter is clearly visible & readable from
a distance for correct meter reading.
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2
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15.1
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In
single phase meters Cumulative active energy (Kwh) with real
date & time and maximum demand (Kw) with 30 minutes
integration of current month with date & time of such
demand.
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In
single phase meters Cumulative active energy (Kwh) with real
date & time and maximum demand (Kw) with 30 minutes
integration of current month with date & time of
such demand. The date & time followed by Kwh & MD
is also accepted.
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3
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15.1
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The
display of the following parameters shall be continuously
scrolling one after another through pushbutton. The display
shall have ‘ON’ time of at least 10 seconds of each
measured value, except LCD segment check. The LCD segment
check shall be on meter display for 2 seconds. Display
parameters shall move forward if button pressed prior to the
programmed time for display of each parameter.
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The
display of the following parameters shall be continuously
scrolling one after another through pushbutton. The display
shall have ‘ON’ time of at least 10 seconds of each
measured value. The LCD segment check display time, less
than 10sec is preferred. Display parameters shall move
forward if button pressed prior to the programmed time for
display of each parameter. If the push button is not
pressed before 10 second it shall returned to auto scroll
mode.
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4
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15.2
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The same
push button shall be used for display of KWh & KW
reading only i.e auto scroll mode during power outage.
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The
same push button shall be used for display of KWh & KW
reading with date & time only i.e parameters as per
auto scroll mode display.
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5
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16.1 (ix)
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i.
Cumulative active energy in KWh for the last 6 months in each of the 5
time zones and total.
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ii.
Cumulative active energy in KWh for the last 6 months.
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6
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16.1 (x)
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iii.
KW maximum demand with 15 minute integration for the last 6 months in
each of the time zones with date and time of such demand
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iv.
KW maximum demand with 30 minute integration for the last 6 months.
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7
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16.2
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The meter shall have provision of
optical port to transfer the date locally through CMRI and
an additional RS232 may be given , which shall be used for
remote reading data as well as data transfer through PSTN/
Optical Fiber /GSM/ CDMA/ PLCC/ etc. coupling with
appropriate modem based on communication backbone chosen.
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The meter shall have provision of
optical port to transfer the date locally through CMRI and
an additional RS232 may be given , which shall be used for
remote reading data as well as data transfer through PSTN/
Optical Fiber /GSM/ CDMA/ PLCC/ etc. coupling with
appropriate modem based on communication backbone chosen. Provision
of RS 232port is optional.
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8
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16.2 (xxiii)
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Cumulative active energy in KWh for the last 6 months in each of the 5
time zones and total
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Cumulative active energy in KWh for the last 6 months.
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9
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16.2 (xxiv)
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v.
KW maximum demand with 15 minute integration for the last 6 months in
each of the time zones with date and time of such demand
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vi.
KW maximum demand with 30 minute integration for the last 6 months.
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10
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29.9B
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The meter
shall be capable to store tampered kWH valued under three
different condition i.e. load reversal, earthed ((full or
partial) and neutral loss, in three separate registers apart
from being added into the cumulative register.
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The meter
shall be capable to store tampered kWH valued under three
different condition i.e. load reversal, earthed ((full or
partial) and neutral loss, in three separate registers apart
from being added into the cumulative register. The down
loaded data will help to find out quantum of power theft.
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11
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29.9(D)
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Opening
of the front cover of meter casing with breaking ultrasonic
welding
by
any person may be treated as a tamper.
This feature is disabled in
supervisory / data download modes through CMRI.
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Opening
of the front cover of meter casing with breaking ultrasonic
welding
by
any person even when there is no power supply, may be record
as a tamper with date & time.
It shall not be possible to reset this tamper by any
means & shall also being down loaded through CMRI. This
feature is optional.
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12
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18
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The
maximum drift in real time clock of the meter shall not ±3
minutes per year and crystal should be temperature
compensated for temperature range of 0ºC to 50 ºC.
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The
maximum drift in real time clock of the meter per year shall
not exceed the specified value of CBIP Report 88 with
latest amendment and crystal should be temperature
compensated for temperature range of 0ºC to 50 ºC.
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13
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28.2
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The meter shall be provided with
2Nos. polycarbonate irreplaceable tamper evident
seals and shall be additionally lease marked with serials
no. matching with that of meter. All the
seals should be provided on front side only. Access
to the working part should not be possible
without breaking
the seals
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The meter shall be provided with
2Nos. polycarbonate irreplaceable tamper evident
seals and shall be additionally lease marked with serials
no. matching with that of meter. All the
seals should be provided on front side only. Access
to the working part should not be possible
without breaking
the seals. The matching of seal no with meter no is
optional. In this case bidder has to mention seal no in
individual meter test report, during supply.
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Tamper
proof boxes
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14
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10(i)
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Un
breakability test : Shall not get damaged or deformed while
dropping the height
of 10 ft and hammered with a 2 Kg hammer.
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Un
breakability test : Shall be done as per IS.
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