ITRON Centron Use and care manual

CENTRON® Meter
Technical Reference Guide
Effective Date: October 2006

ii CENTRON® Meter Technical Reference Guide
Proprietary Rights Notice
This manual contains the trade secrets and confidential information of Itron, Inc., which are not to be divulged to
third parties and may not be reproduced or transmitted in whole or part, in any form or by any means, electronic or
mechanical for any purpose, without the express written permission of Itron, Inc. All rights to designs or inventions
disclosed herein, including the right to manufacture, are reserved to Itron, Inc.
The information contained in this document is subject to change without notice. Itron, Inc. reserves the right to
change the product specifications at any time without incurring any obligations.
Trademarks Used in This Manual
CENTRON and PC-PRO+ are registered trademarks of Itron, Inc.
Windows is a trademark of Microsoft Corporation.
Cellnet is a registered trademark of Cellnet Technologies, Inc.
CENTRON® Meter Technical Reference Guide
100299GM-02
Itron, Inc.
Corporate Headquarters
2111 North Molter Road
Liberty Lake WA, 99019
U.S.A.
Tel: [phone]
Fax: [phone]
Itron, Inc.
Oconee Electricity Metering
313-B North Highway 11
West Union, SC 29696
U.S.A.
Tel: [phone]
Fax: [phone]
www.itron.com Copyright© 2004-2006
Itron, Inc.
All rights reserved.

CENTRON® Meter Technical Reference Guide iii
Compliance With FCC Regulations
FCC Part 15, Class B
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15
of the FCC rules. These rules are designed to provide reasonable protection against harmful interference when the
equipment is operated in a residential/commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
Re-orient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 of the FCC
rules.
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT
MAY CAUSE UNDESIRED OPERATION.
FCC Part 15, Subpart C
When equipped with a radio transmitter option, this equipment has been tested and found to comply with the limits
for an intentional radiator, pursuant to Part 15, Subpart C of the FCC Rules. This equipment generates, uses, and can
radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause
interference to radio communications.
The limits are designed to provide reasonable protection against such interference in a residential situation. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
interference to radio or television reception. which can be determined by turning the equipment on and off, the user
is encouraged to try to correct the interference by one of more of the following measures:
Reorient or relocate the receiving antenna of the affected radio or television.
Increase the separation between the equipment and the affected receiver.
Connect the equipment and the affected receiver to power outlets on separate circuits.
Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by Itron, Inc. could void the user’s authority to operate the
equipment.
RF Exposure Information
This equipment complies with the FCC RF radiation requirements for uncontrolled environments. To maintain
compliance with these requirements, the antenna and any radiating elements should be installed to ensure that a
minimum separation distance of 20 cm is maintained from the general population.

iv CENTRON® Meter Technical Reference Guide
Canadian Interference Causing Equipment Regulations
This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations.
Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.
Cet appareillage numérique de la classe B répond à toutes les exigences de l'interférence Canadienne causant des
règlements d'équipement. L'opération est sujette aux deux conditions suivantes: (1) ce dispositif peut ne pas causer
l'interférence nocive, et (2) ce dispositif doit accepter n'importe quelle interférence reçue, y compris l'interférence qui
peut causer l'opération peu désirée.
Factory Repair of Meters
Itron recommends that all repairs be performed at the factory. Certain repairs may be performed by the user;
however, unauthorized repairs will void any existing warranty. All surface mounted parts must be replaced by the
factory.
Repair of Meters Under Warranty
If the meter is under warranty, then Itron, Inc. will repair the meter at no charge if the meter has failed due to
components or workmanship. A return authorization number must be obtained before the equipment can be sent back
to the factory. Contact your Itron Sales Representative for assistance.
Repair of Meters Not Under Warranty
The same procedure as above applies. Itron will charge for the necessary repairs based on the failure.
Service Return Address
Itron, Inc.
Customer Repair Department
313 North Highway 11 Dock C
West Union, SC 29696
U.S.A.
Recycling Information
The product you have purchased contains a battery (or batteries), circuit boards, and switches. The batteries are
recyclable. At the end of the meter’s useful life, under various state and local laws, it may be illegal to dispose of
certain components into the municipal waste system. Check with your local solid waste officials for details about
recycling options or proper disposal.
Although polycarbonate is not a commonly recycled plastic, the recycling number for the polycarbonate inner cover,
outer cover, and base is seven (7).

CENTRON® Meter Technical Reference Guide v
Table of Contents
Proprietary Rights Notice ...............................................................................................................ii
Trademarks Used in This Manual..................................................................................................ii
Compliance With FCC Regulations...............................................................................................iii
FCC Part 15, Class B..........................................................................................................iii
FCC Part 15, Subpart C......................................................................................................iii
RF Exposure Information....................................................................................................iii
Canadian Interference Causing Equipment Regulations....................................................iv
Factory Repair of Meters...............................................................................................................iv
Repair of Meters Under Warranty.......................................................................................iv
Repair of Meters Not Under Warranty................................................................................iv
Service Return Address......................................................................................................iv
Recycling Information....................................................................................................................iv
General Information ..................................................................................................1
About This Manual .........................................................................................................................1
General Description........................................................................................................................2
Physical Description.......................................................................................................................3
Meter Base...........................................................................................................................3
Personality Modules.............................................................................................................4
Product Availability.........................................................................................................................5
Battery..................................................................................................................................5
Covers..................................................................................................................................6
Display Functions...........................................................................................................................6
Specifications .................................................................................................................................6
Electrical...............................................................................................................................6
Operating Environment........................................................................................................6
Characteristic Data ..............................................................................................................7
Burden Data.........................................................................................................................7
Technical Data.....................................................................................................................8
Dimensions..........................................................................................................................8
C1SD/C1ST/C1SL Dimensions.................................................................................9
Shipping Weights.................................................................................................................9
Installation................................................................................................................11
Inspection.....................................................................................................................................11
Battery................................................................................................................................11
Storage.........................................................................................................................................11
Unpacking.....................................................................................................................................12
Selecting a Site ............................................................................................................................12
Installing the Meter into Service...................................................................................................12
Programming the C12.19 C1SD,T, L Meter.................................................................................13
Retrofitting with Personality Modules...........................................................................................13
Operation: Base Metrology.....................................................................................17
CENTRON 1S, 2S CL200, and 3S...............................................................................................17
CENTRON 2S CL320, 4S, 12/25S...............................................................................................19

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vi CENTRON® Meter Technical Reference Guide
Operation: C1S Version ..........................................................................................21
Physical Description (Personality Modules).................................................................................22
Registers ......................................................................................................................................22
Kilowatt Hours....................................................................................................................22
Resetting Values (ZRO-C2A) ............................................................................................23
LCD Display Function...................................................................................................................24
Non-Detented Register.................................................................................................................25
Detented Register ........................................................................................................................25
Net Register..................................................................................................................................25
Segment Check............................................................................................................................26
Factory Programming Options .....................................................................................................26
Display Timing ...................................................................................................................26
Digits and Multipliers..........................................................................................................26
Operation: C1SR Version........................................................................................27
Standard Consumption Message (SCM) .....................................................................................28
Interval Data Message (IDM) .......................................................................................................28
Physical Description (C1SR)........................................................................................................28
C1SR Display...............................................................................................................................29
C1SR Electronic Detent...............................................................................................................30
Net Metering.................................................................................................................................30
Resetting Values (C1SR).............................................................................................................31
Transmission................................................................................................................................31
FCC Regulations................................................................................................................31
Testing the RF Message..............................................................................................................31
Tamper Detection.........................................................................................................................32
Testing the C1SR Tamper Counter...................................................................................32
SCM Testing............................................................................................................32
Retrofitting the C1SR Personality Module....................................................................................33
Operation: C1SC Version........................................................................................35
Physical Description.....................................................................................................................36
Transmission Scheme..................................................................................................................36
FCC Regulations..........................................................................................................................37
Display Functions.........................................................................................................................37
Resetting Values..........................................................................................................................38
Programming the C1SC/CN1SC..................................................................................................38
Operation: C12.19 C1SD, C1ST, and C1SL Versions............................................41
Features .......................................................................................................................................42
Type Codes..................................................................................................................................42
Controls and Indicators ................................................................................................................43
Modes of Operations....................................................................................................................44
Normal Mode .....................................................................................................................44
Alternate Mode...................................................................................................................44
Test Mode..........................................................................................................................45
Test Mode Timeout..................................................................................................45
Test Mode Lockout..................................................................................................45
Displays........................................................................................................................................45

Table of Contents
CENTRON® Meter Technical Reference Guide vii
Optical Port...................................................................................................................................47
Programmable Functions.............................................................................................................47
Energy Data Display Items ................................................................................................47
Demand Data Display Items..............................................................................................47
Informational Data Display Items.......................................................................................47
Demand Registers.............................................................................................................49
Demand Calculations.........................................................................................................49
Demand...................................................................................................................49
Block Interval Demand Calculation..........................................................................50
Rolling/Sliding Demand Interval Calculation............................................................50
Thermal Emulation...................................................................................................50
Cumulative Demand Values....................................................................................51
Continuous Cumulative Demand Values.................................................................51
Present Demand......................................................................................................51
Previous Demand....................................................................................................51
Projected Demand...................................................................................................52
Peak Demand (Maximum Demand)........................................................................52
Coincident Demand.................................................................................................52
Multiple Peaks .........................................................................................................52
Demand Reset...................................................................................................................52
Cold Load Pickup...............................................................................................................53
TOU/Load Profile Meters...................................................................................................53
Self Reading and SnapShot Registers..............................................................................53
Time-of-Use.......................................................................................................................54
TOU Schedules .......................................................................................................54
Calendar Schedule..................................................................................................55
Registers..................................................................................................................56
TOU Operation ........................................................................................................56
Load Profile Specifications.................................................................................................57
Capacity...................................................................................................................57
Bit Resolution...........................................................................................................57
Interval Lengths.......................................................................................................58
Power Outage..........................................................................................................58
Channel Configurations...........................................................................................58
Data Storage............................................................................................................59
Recording Duration..................................................................................................60
Optional Features ..............................................................................................................60
Event Log.................................................................................................................60
Security Codes ........................................................................................................61
Firmware Upgrades.................................................................................................62
Power Procedures .............................................................................................................62
Applying Power........................................................................................................62
Power Down Procedures.........................................................................................62
Battery Life (Load Profile & TOU)............................................................................63
Three Button Reset............................................................................................................63
RF Options.........................................................................................................................64
Testing, Troubleshooting, and Maintenance.........................................................67
Testing Support Features.............................................................................................................68
Infrared Test LED...............................................................................................................68
Pulse Detector ...................................................................................................................68
Annunciators......................................................................................................................69
Watthour Annunciators............................................................................................69
TOU Rate Annunciators...........................................................................................70

Table of Contents
viii CENTRON® Meter Technical Reference Guide
Test Mode Annunciator............................................................................................70
Testing with the Infrared Test LED....................................................................................70
Testing Using the Disk Emulation Annunciator .................................................................71
Recommended Energy Testing Procedures................................................................................71
AEP Test Codes ................................................................................................................71
Field Testing.................................................................................................................................71
Required Hardware............................................................................................................72
Test Method Using a Snap Switch Assembly....................................................................72
Troubleshooting............................................................................................................................72
Fatal Errors........................................................................................................................72
Error Codes (C1SR) ................................................................................................72
Error Codes (C12.19 C1SD/T/L) .............................................................................72
Non-Fatal Errors ................................................................................................................74
Inspecting and Troubleshooting—General...................................................................................76
Blank Display .....................................................................................................................76
Time and Date Wrong (TOU Version) ...............................................................................76
No Accumulation of kWh or kW.........................................................................................76
Software Cannot Communicate with Module.....................................................................77
Reed Switch Does Not Activate the Alternate Mode.........................................................77
Reset Mechanism Does Not Initiate Demand Reset.........................................................78
Demand Reset Cannot Be Initiated Through PC or Handheld..........................................78
Test Mode Switch Does Not Place Meter in Test Mode....................................................78
Inspecting and Troubleshooting—C1S LCD and C1SR ..............................................................78
Blank Display .....................................................................................................................78
Specifications and Drawings..................................................................................79
Specifications ...............................................................................................................................79
Drawings.......................................................................................................................................79
Glossary of Terms...................................................................................................83
Index.........................................................................................................................87

CENTRON® Meter Technical Reference Guide ix
Table of Figures
Figure 1: CENTRON Personality Modules.....................................................................................3
Figure 2: CENTRON 120 Volt Metrology.......................................................................................4
Figure 3: CENTRON 240 Volt Metrology.......................................................................................4
Figure 4: CENTRON 20 Amp Metrology........................................................................................4
Figure 5: CENTRON Personality Module Assembly......................................................................5
Figure 6: Dimensions .....................................................................................................................8
Figure 7: C12.19 C1SD/T/L C1SR2/R3 Dimensions .....................................................................9
Figure 8: Removing the Board-to-Board Connector ....................................................................14
Figure 9: New Module Snap-in.....................................................................................................15
Figure 10: Circuit Board Notches.................................................................................................15
Figure 11: Board-to-Board Connector, Bottom............................................................................16
Figure 12: Board-to-Board Connector, Top .................................................................................16
Figure 13: Power Measurement Principle in 2S Meter................................................................18
Figure 14: Simplified CENTRON Architecture.............................................................................18
Figure 15: Hall Cells and ADCs ...................................................................................................20
Figure 16: C1S LCD Personality Module.....................................................................................21
Figure 17: Mounted C12.19 D/T/L Register.................................................................................22
Figure 18: ZRO-C2A Resetter Connected to the CENTRON......................................................23
Figure 19: Reverse Side of ZRO-C2A Resetter...........................................................................24
Figure 20: LCD.............................................................................................................................24
Figure 21: Non-Detented Register...............................................................................................25
Figure 22: Delivered kWh with Detent Enabled...........................................................................25
Figure 23: Net kWh......................................................................................................................25
Figure 24: Segment Check ..........................................................................................................26
Figure 25: CENTRON C1SR Meter .............................................................................................27
Figure 26: C1SR LCD..................................................................................................................29
Figure 27: C1SR FCC Label Location..........................................................................................34
Figure 28: CENTRON C1SC........................................................................................................35
Figure 29: Cellnet Telemetry........................................................................................................37
Figure 30: C1SC LCD..................................................................................................................38
Figure 31: C1SC/CN1SC Programming Port Location................................................................39
Figure 32: CENTRON C1SL Meter..............................................................................................41
Figure 33: Controls and Indicators...............................................................................................43
Figure 34: Test LED Location ......................................................................................................68
Figure 35: Pulse Detector ............................................................................................................69
Figure 36: TOU Rate Annunciator................................................................................................70
Figure 37: Form 1S Wiring Diagram............................................................................................79
Figure 38: Form 2S Wiring Diagram............................................................................................80
Figure 39: Form 3S 120V Wiring Diagram...................................................................................80
Figure 40: Form 3S 240V Wiring Diagram...................................................................................81
Figure 41: Form 4S Wiring Diagram............................................................................................81
Figure 42: Form 12S Wiring Diagram..........................................................................................82
Figure 43: Form 25S Wiring Diagram..........................................................................................82

Table of Figures
x
CENTRON® Meter Technical Reference Guide
Notes:

CENTRON® Meter Technical Reference Guide 1
In This Chapter
About This Manual................................................................................................1
General Description...............................................................................................2
Physical Description..............................................................................................3
Product Availability...............................................................................................5
Display Functions..................................................................................................6
Specifications.........................................................................................................6
This technical reference guide explains the installation, operation, and maintenance of the
Itron CENTRON® meter family. Itron urges you to read the entire manual before
attempting installation, testing, operation, or maintenance of a meter. To operate the Itron
PC-PRO+® Advanced Programming Software, refer to the online user manuals that are
installed with the PC-PRO+ Advanced software.
The online software manuals are in Adobe® Portable Document Format (PDF) and are
accessible from the Windows Start menu. The Adobe Reader is required to view and
print these manuals. The Adobe Reader can be downloaded freely from
http://www.adobe.com.
About This Manual
This manual contains the following information as listed in the chapter descriptions below:
Chapter Title Description
General Information Provides a general description, operation, physical and
functional descriptions, and complete CENTRON meter
specifications.
Installation Gives instructions for the proper handling and installation.
Operation: Base Describes the measurement technique used for the base
on the CENTRON meter.
Operation: C1S Provides a physical description and operational
characteristics of the C1S watthour (kWh) only meter.
Operation: C1SR Provides a physical description and the operational
characteristics of the C1SR R300 900 MHz radio
frequency personality module.
Operation: C1SC Provides a physical description and the operational
characteristics of the C1SC Cellnet personality module.
CHAPTER 1
General Information

General Information
2 CENTRON® Meter Technical Reference Guide
Chapter Title Description
Operation: C12.19
C1SD, C1ST, C1SL Provides detailed information and theoretical operation for Demand (C1SD), Time-of-Use (C1ST), and Load Profile
(C1SL) versions. Gives step-by-step procedures for
accessing the three operational modes and associated
displays.
Testing,
Troubleshooting,
and Maintenance
Provides an explanation of the testing, troubleshooting,
and maintenance of the CENTRON meter.
Specification Numbers
and Drawings Provides a reference to meter part numbers and shows meter form drawings.
General Description
The CENTRON meter is a solid-state, singlephase and network meter used for measuring
electrical energy consumption. The CENTRON incorporates a two-piece design combining
a base metrology with a variety of personality modules that snap on the standard meter base.
Utilizing the Hall Effect technology for accurate power measurement, the metrology portion
of the meter contains all measurement circuitry and calibration information, while the
personality modules contain the register functionality and communication mediums.
Each version of the meter is distinguished by the various personality modules that mount to
the standard meter metrology base. The personality modules available include the following
versions:
Energy only—C1S (LCD)
Demand—C1SD
Time-of-Use (TOU) with Demand—C1ST
Load Profile with TOU and Demand—C1SL
Energy only with radio frequency AMR—C1SR
Cellnet Fixed Network—C1SC
Energy plus demand with radio frequency AMR - C1SDR2/R3

General Information
CENTRON® Meter Technical Reference Guide 3
Figure 1: CENTRON Personality Modules
Physical Description
The CENTRON meter features a common meter base to which various personality modules
are attached. The covers come in configurations of polycarbonate and glass.
Meter Base
The CENTRON meter base contains all of the measurement circuitry and calibration
information on the metrology board.
The meter base assembly includes two current conductors, a flux-directing core, a Hall
Effect device, the metrology circuit board, and the ultrasonically welded module support.
The base also contains a metal oxide varistor (MOV), which is used to protect the meter
from line surges.

General Information
4 CENTRON® Meter Technical Reference Guide
Meter bases are built specific to the metering form and are available in Form 1S, 2S CL200,
2S CL320, 3S 120V, 3S 240V, 4S, and 12/25S configurations. Examples are shown below.
Figure 2: CENTRON 120 Volt Metrology
Figure 3: CENTRON 240 Volt Metrology
Figure 4: CENTRON 20 Amp Metrology
Personality Modules
All of the personality modules in the CENTRON meter family snap into the module holder
located on the standard meter base as shown below. From the base metrology, the energy
data is transmitted to the personality modules, which contain the meter display,
communication mediums, and register functionality.
Personality Modules are voltage specific and should be ordered based on the meter's
metrology.

General Information
CENTRON® Meter Technical Reference Guide 5
Figure 5: CENTRON Personality Module Assembly
Product Availability
The current offerings for the CENTRON are:
Metrology Class 100, 120V, Form 1S
Class 200, 240V, Form 2S
Class 320, 240V, Form 2S
Class 20, 120V, Form 3S
Class 20, 240V, Form 3S
Class 20, 240V, Form 4S
Class 200, 120V, Form 12S
Class 200, 120V, Form 25S
Personality
Modules C1S—LCD (5x1 or 4x10)
C1SR—R300C (Radio
Frequency)
C1SC—Cellnet Data System
C1SD—Demand
C1ST—Time-of-Use (TOU)
C1SL—Load Profile
C1S_R2/R3—R300CD/CD3
where _ = D, T, or L
Battery
The CENTRON C1SD+Clock, C1ST, and C1SL modules contain a battery that powers the
clock circuit during a power outage. The battery is permanently soldered to the module and
is expected to last the life of the module.
Refer to Operation: C12.19 C1SD, C1ST, and C1SL Versions (see "Operation: C12.19
C1SD, C1ST, and C1SL Versions" on page 41) for detailed battery information.

General Information
6 CENTRON® Meter Technical Reference Guide
Covers
The outer cover configurations available for CENTRON meter family are described below.
Meter Versions
Cover Options
P
olycarbonate
Glass
C1S, C1SR, C1SC Standard Optional
C12.19 C1SD, C1ST, C1SL Including Demand Reset +
Optical Tower Not Available
Display Functions
The C1S and C1SR modules can display kWh readings in either a 4x1, 4x10, or 5x1
configuration.
The C12.19 C1SD, C1ST, and C1SL modules can display a maximum of 80 display items
for the Normal, Alternate, and Test modes.
Specifications
The following sections describe the CENTRON meter specifications.
Electrical
Voltage Rating 120V, 240V
Operating Voltage ± 20% (60 Hz); ± 10% (50 Hz)
Frequency 60 Hz, 50 Hz
Operating Range ± 3 Hz
Battery Voltage 3.6 V nominal (C1SD + Clock, C1ST, C1SL only)
Operating Range 3.4 - 3.8 V
Carryover 10-12 year cumulative and 15 year shelf life
Operating Environment
Temperature -40°C to +85°C
Humidity 0% to 95% non-condensing
Accuracy ± 0.5% @ unity power factor
± 0.5% @ 50% power factor
Transient/Surge
Suppression ANSI C62.45 - 1992 IEC 61000-4-4

General Information
CENTRON® Meter Technical Reference Guide 7
Characteristic Data
Starting Watts
2S CL200 5W
1S, 2S CL320, 12S, 25S 10W
3S CL20 1.2W
4S CL20 2.4W
Temperature Rise Meets ANSI C12.1 Section 4.7.2.9
Burden Data
Metrology Voltage Watt Loss VA
1S 120 0.45 3.7
2S Class 200 240 0.45 7.2
2S Class 320 240 0.65 10.2
3S 240 0.65 10.2
4S 240 0.65 10.2
12S/25S 120 0.65 5.4
240V Register LCD R300 R300 HP Cellnet
C12.19
D/T/L R300CD/CD3
Watt Loss 0.01 0.45 1.35 0.90 1.67 1.67
VA — 7.16 7.29 14.76 21.76 21.57
120V Register LCD R300 R300 HP Cellnet
C12.19
D/T/L R300CD/CD3
Watt Loss 0.01 0.28 0.65 0.90 1.76 1.80
VA — 2.40 5.50 11.10 11.87 11.98
To get the watt loss or VA of the overall product, add the metrology watt loss to the register
watt loss and option board watt loss.
VA(Meter) = VA(Metrology) + VA(Register)
Watt Loss(Meter) = Watt Loss(Metrology) + Watt Loss(Register)

General Information
8 CENTRON® Meter Technical Reference Guide
Technical Data
Meets applicable standards:
ANSI C12.1 - 2001 (American National Standard for Electric Meters - Code for
Electricity Metering)
ANSI C12.18 - 1996 (American National Standard - Protocol Specification for ANSI
Type 2 Optical Port)
ANSI C12.19 - 1997 (American National Standard - Utility Industry End Device Data
Tables)
ANSI C12.20 - 2002 (American National Standard for Electricity Meters - 0.2 and 0.5
Accuracy Classes)
ANSI/IEEE C62.45 - 1992 (Guide to Surge Testing in Low-Voltage AC Power
Circuits)
IEC 61000-4-2
IEC 61000-4-4
Dimensions
The following dimensional measurements are shown in inches and (centimeters).
Figure 6: Dimensions
Polycarbonate
A B C D E
6.29
(16.00) 6.95 (17.70) 2.70 (6.90) 3.16 (8.00) 4.53 (11.50)
Glass
A B C D E
6.42
(16.30) 6.95 (17.70) 3.17 (8.10) 3.64 (9.20) 5.01 (12.70)

General Information
CENTRON® Meter Technical Reference Guide 9
C1SD/C1ST/C1SL Dimensions
Figure 7: C12.19 C1SD/T/L C1SR2/R3 Dimensions
The following dimensional measurements are shown in inches and (centimeters).
Polycarbonate
A B C D E F G H
6.95
(17.70) 6.29 (16.00)
2.70
(6.90) 3.16 (8.00) 4.53 (11.50)
4.98
(12.70)
6.29
(16.00) 6.95 (17.70)
Shipping Weights
The following weight measurements are shown in pounds and (kilograms).
Polycarbonate Glass
Meter 1.38 (0.62) 2.75 (1.25)
4 Meters and Carton 8.90 (4.04) 13.96 (6.35)
96 Meter Pallets 214 (97.30) 335 (152.30)

General Information
10 CENTRON® Meter Technical Reference Guide
Notes: