42 A1120/40 - Electronic Polyphase Meter
© Elster Metering Limited - M181 001 2G - 5/2010
VERSION
8 TOU Registers, 4 MD Registers, 15 Historical Registers, DSM - see Note 4 - A
8 TOU Registers, 4 MD Registers, 15 Historical Registers, DSM, DLS time stamps and 12 external registers - Note! All new customers from November 2007 - see
Note 4
- C
8 TOU Registers, 4 TOU Registers, 15 Historical Registers, DSM, DLS Time stamps, 12 External Registers and Daily Billing F
8 TOU Registers, 4 TOU Registers, 15 Historical Registers, DSM, DLS Time stamps, 12 External Registers - Note! Register zeroing by use of "Register Zeroing Tool"
is NOT available in this option
G
Revision Suffix
Firmware 2-01178-Q (Version A only). Enhanced GPRS and COP 10 Q
Firmware 2-01322-K (Version C) Enhanced GPRS and COP 10 K
Firmware 2-01340-B (Version F) Daily Billing B
Firmware 2-01345-A (Version G) Enhanced GPRS & COP 10. No register zeroing Z
SPECIAL ADDITIONS FIRMWARE
None N
Additional Firmware Function for ESCOM only (Phase angle definition as A1700 A
SPECIAL ADDITIONS HARDWARE
NONE N
Notes
Note 1: CURRENT RATINGS
IEC/EN 62052-11 defines only Basic, Reference and Maximum currents as follows:
Basic Current (Ib) Direct Connected Standard values: 5, 10, 15, 20, 30, 40, 50A Exceptional
values: 80A.
Reference Current (In) CT Operated Standard values: 1, 2, 5A
Exceptional values: 1.5, 2.5A
Direct Connected Maximum current (Imax) shall preferably be an integral multiple of Ib.
Direct Connected A1120/A1140 meters may have Imax values up to a maximum of 100A
CT Operated shall have maximum currents of 1.2 In, 1.5 In and 2 In
CT Operated A1120/A1140 meters may be:
1 - 2A (suitable for use as 1 - 1.2A, 1 - 1.5A, or 1 - 2A)
5 - 10A (suitable for use as 5 - 6A, 5 - 7.5A, or 5 - 10A)
1 - 10A (suitable for use with any of the above 6 ratings)
EN 50470-1 (MID) defines basic values or Itr from which Imin, Iref and Imax can be derived
Basic values of Itr Direct Connected 0.5, 1, 1.5, 2A
Basic values of Itr CT Operated 0.05, 0.1, 0.25
Imin, Iref and Imax have been chosen so that the following relationships are met
Direct Connected, Class A Imin <
0.5 x Itr Iref = 10 x Itr Imax > 50 x Itr
CT Operated, Class A Imin <
0.4 x Itr In = 20 x Itr Imax > 1.2 x In
Direct Connected, Class B Imin <
0.5 x Itr Iref = 10 x Itr Imax > 50 x Itr
CT Operated, Class B Imin <
0.2 x Itr In = 20 x Itr Imax > 1.2 x In
Note 2: VOLTAGE RATINGS
Of the values IEC/EN 62052-11 defines for reference voltages, the following may be accepted
Ref Voltages for meters not connected through current transformers
Std values 120, 230, 400V
Exceptional values 100, 127, 200, 220, 240, 380, 415V
EN 50470- 1 (MID) defines for reference voltages, the following standards and exceptional values
Ref Voltages for Direct Connected
Std values 230/400V
Exceptional values 220/380V, 240/415V
Meters with marked currents and voltages other than the above values CANNOT be provided when the nameplate
shows the IEC/EN Standard Number.
If a valid requirement exists for meters with marked values within the acceptable ranges, but not listed above, specific
arrangements to provide nameplates not showing the IEC/EN standard must be made.
Note 3: TEST INDICATOR OUTPUT VALUES
The following values are to be used for the Test Indicator LED outputs:
Direct Connected: 1,000 p/kWh (kvarh) CT Operated: 10,000 p/kWh (kvarh)
Note 4: SCHEME COMPATIBILITY
Schemes generated for VERSION 'A' meters are not compatible with VERSION 'C' meters
Note 5: SPECIAL ADDITIONS
Early issues of this code used the final (16
th
) digit for SPECIAL ADDITIONS and an 'A' in this position indicates "with additional
voltage terminals".
Figure 1 - Model Code (Continued)
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