7.instal section.pdf
TRANSCRIPT
A1700 Programmable Polyphase Meter
Chapter 7 - Installation
M120 001 7S
5.2007
A1700 Chapters
Chapter 1 Introduction M120 001 1 Chapter 2 Overview M120 001 2 Chapter 3 Hardware M120 001 3 Chapter 4 Communications M120 001 4 Chapter 5 Input/Output M120 001 5 Chapter 6 Installation M 120 0016
Chapter 7 Software Support M120 001 7 Chapter 8 IEC 870 Meter (Special) M120 001 8 Chapter 9 T. L Compensation (Special) M120 001 9
Minor Modification Record Date Mode 14/8/2008 Removal of Bezel & Bracket
A1700 Meter Users Manual - Chapter 7 1 _______________________________________________________
© Elster Metering Limited - M120 001 7S - 5/2007
CONTENTS 1 SCOPE ...............................................................................................................................3
2 FOREWORD ......................................................................................................................4
3 SAFETY ISSUES ...............................................................................................................5
4 COMPLIANCE WITH STANDARDS AND EUROPEAN DIRECTIVES ............................8
5 INSTALLATION .................................................................................................................9
5.1 Receiving the Equipment....................................................................................................9 5.2 Handling..............................................................................................................................9 5.3 Storage ...............................................................................................................................9 5.4 Installation Site ...................................................................................................................9 5.5 Installing the Meter .............................................................................................................9 5.5.1 Mechanical..........................................................................................................................9 5.5.2 Electromagnetic Compatibility (EMC)...............................................................................10
6 TERMINAL ARRANGEMENTS .......................................................................................11
7 COMMISSIONING............................................................................................................11
7.1 Initial Checks ....................................................................................................................11 7.2 Power on...........................................................................................................................11 7.3 System Test......................................................................................................................12
8 READ WITHOUT POWER...............................................................................................12
8.1 Battery Installation ............................................................................................................12 8.2 Testing the Battery Read Operation.................................................................................13 8.3 Return of AC Supply.........................................................................................................13
9 AUXILIARY VOLTAGE FOR POWER SUPPLY.............................................................13
9.1 Auxiliary Supply Connection.............................................................................................13 9.2 Technical Data..................................................................................................................14
10 FAULT FINDING GUIDE..................................................................................................14
11 HAZARDOUS SUBSTANCES.........................................................................................15
11.1 Battery ..............................................................................................................................15 11.2 Liquid Crystal Display .......................................................................................................15
Figures Figure 1: Terminal Arrangements ....................................................................................................16 Figure 2: Relay Contact Output Circuit ............................................................................................17 Figure 3: Outline Diagram and Fixing Centres (Standard Terminal Cover) ....................................18 Figure 3a: Outline Diagram and Fixing Centres (Short Terminal Covers) ........................................19 Figure 4: Battery Housing or A.C. Auxiliary Supply .........................................................................20 Figure 5a: Fault Finding Chart ...........................................................................................................21 Figure 5b: 3 Phase 4 Wire CT Operated Meters ...............................................................................22 Figure 5c: 3 Phase 3 Wire CT Operated Meters ...............................................................................23
2 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
© Elster Metering Limited - M120 001 7S - 5/2007
Installation Instructions 3 ______________________________________________________________________________
Installation Instructions
1 SCOPE This Chapter covers the installation of all versions of A1700 meters.
For information on installing modules, refer to Chapters M120 001 4 (Communications) and M120 001 5 (Input/output).
Before installing an A1700 meter -
Check the meter type is correct for the installation.
Read Section 2 (Health and Safety) and Section 3 (Safety Issues) of this Chapter.
4 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
2 FOREWORD
HEALTH AND SAFETY WARNING
Compliance with Instructions in this Manual
The instructions and information in this manual are provided in compliance with Section 6 of the UK Health and Safety at Work Act, as amended by Schedule 3 of the Consumer Protection Act 1987. The purchaser is responsible for making sure that everyone, whether in his employment or not, who will be associated with the products supplied by Elster Metering Systems, and to which these instructions and information apply, are made familiar with the contents of this manual. This applies to all persons who may be involved in activities such as unpacking, inspecting, testing, setting, cleaning, installing, commissioning, operating, maintaining, decommissioning or disposing of the products. Safety of Persons using Electrical Products
Employers are reminded that they have a duty to ensure, as far as is reasonably practicable, the Health, Safety and Welfare at work of all their Employees. Employers must therefore ensure that employees are informed, trained and supervised and use proper working procedures to ensure the safety of themselves and others. The information provided in this manual is intended to ensure that products are properly installed and otherwise handled in order to maintain them in a safe condition. In the UK, employers have duties under the Health and Safety at Work Act 1974 and the various regulations stemming therefrom. In countries outside the UK, employers should ensure proper compliance with the Health and Safety Legislation which is applicable to them. Putting into Service
Products supplied by Elster Metering Systems have been designed and manufactured, in accordance with appropriate standards, to operate under specified conditions, when properly installed. The purchaser or delegated contractor is responsible for the "Putting into Service" of any Elster Metering Systems product supplied as "Non-connected". All related activities must therefore be carried out with due regard to any applicable legislation, standards and good practice.
© Elster Metering Limited - M120 001 7S - 5/2007
Installation Instructions 5 ______________________________________________________________________________
3 SAFETY ISSUES
WARNINGS
Live parts
The A1700 meter is provided with a 'terminal cover plate' that should always be fitted on installation. The terminal cover plate provides protection for the main terminals whilst, for example, modules are being installed. Only if the terminal cover plate is in place should any attempt be made to remove the meter terminal cover unless all supplies have been isolated. Failure to follow this instruction may result in electrical shock or death.
Live parts will be exposed when the terminal cover plate or the main cover is removed.
An optional PP3 rechargeable NiMH battery for read without power may be fitted under the meter terminal cover. The battery will be connected to either neutral (3 phase 4 wire meters) or B phase (3 phase 3 wire meters). All supplies connected to the meter must be isolated before any attempt is made to fit or remove the battery and its container. Failure to follow this instruction may result in electrical shock or death.
Removal of the main cover invalidates the certification of certified meters.
Direct connected meters have electrical connections between the measured voltage terminals and measured current terminals.
CT connected meters have electrical connections between the measured voltage terminals.
Warning Labels
A warning label is fixed to the meter, on the top of the terminal cover plate. The label contains an exclamation mark in a black triangle, to indicate that reference should be made to the manual.
The label also contains the words "live parts exposed when this cover is removed".
Further warning labels will be fitted where other optional features are present.
Battery Warnings
The meter contains a Lithium manganese dioxide battery. This battery is completely safe under normal conditions. However, it must never be recharged, disassembled, heated above 100° C, incinerated, or have the contents exposed to water.
Fire, explosion or severe burns may result if these instructions are disregarded.
In the interests of safety, environmental protection and possible legislation, Lithium batteries require careful disposal.
Before arranging for the disposal of these cells, users should satisfy themselves that the proposed means of disposal is both safe and compliant with local legislation requirements.
continued.......
6 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
WARNINGS (continued)
Elster Metering Systems would like to draw the user's attention to the International Standard for Lithium Batteries - IEC 60084-4. - which gives further information about the handling, storage, transport and disposal of lithium cells.
Elster Metering Systems should be contacted by the user should difficulties arise in arranging proper disposal. They will, if practical, help the user identify safe disposal means.
The NiMH PP3 battery for read without power is not classified as ‘hazardous waste’, but disposal of these batteries should be in line with local legislation. The battery must not be disassembled, opened, short - circuited, heated above +100° C or incinerated. It should not be charged by any other means than installation into the meter.
Auxiliary Voltage for Power Supply
The maximum voltage for the auxiliary voltage supply is 265V a.c.
The supply must be protected by a suitably rated fuse. (See Section 9.2, Technical Data).
All supplies connected to the meter must be isolated before disconnecting the cable.
Liquid Crystal Display
Liquid crystals are toxic. If a display is damaged, avoid contact with the liquid. If the liquid makes contact with the skin it must be washed off immediately with water. Seek medical advice.
Modules Only modules of the appropriate type and supplied by Elster Metering Systems should be inserted into the two A1700 meter module apertures. Inappropriate use of these apertures could result in contact with hazardous voltage. See Chapters M120 001 4 and M120 001 5. continued.......
© Elster Metering Limited - M120 001 7S - 5/2007
Installation Instructions 7 ______________________________________________________________________________
WARNINGS (continued)
Operation on Different Power Systems
The A1700 allows for 3 manufacturing configurations for use on the following power systems:
Configuration 1 - 3 elements
Configuration 2 - 3 elements
Configuration 3 - 2 elements
3ph 4w 3ph 4w 3ph 3w 2ph of 3ph 4w (Note 1) 2ph 3w (Note 1) 1ph 3w (Note 1) 1ph 2w (Note 1)
3ph 3w (Note 1) Note 2: For this configuration the yellow phase failure should be disabled and the phase fail threshold reduced to about 40%.
The pulse value of the test indicator is that marked on the nameplate regardless of the power system to which the meter is connected. This means that the pulse rate of the test indicator at Imax will be less for systems not using all elements.
UNUSED TERMINALS
Note 1: (See configuration table above).
Meters installed with these configurations will have unused main terminals. To avoid accidental or fraudulent contact with these unused terminals, it is strongly recommended that either:
1. Full terminal covers without cut-outs are used
2. If terminal covers with cut-outs or short terminal covers are used, then suitable insulated blanking plugs are fitted into used terminals
8 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
© Elster Metering Limited - M120 001 7S - 5/2007
4 COMPLIANCE WITH STANDARDS AND EUROPEAN DIRECTIVES A1700 meters and their internal modules delivered to customers for use in European Economic Area (EU & EFTA) countries are CE marked to indicate compliance with the requirements of the Electromagnetic Compatibility Directive.
This compliance has been demonstrated by subjecting representative samples of the product, installed in accordance with the instructions and guidelines given in this document, to the tests prescribed in the following standards :-
EN 50081-1: 1992, Electromagnetic compatibility generic emission standard - part 1 : Residential, Commercial and Light Industry. EN50082-1: 1992, Electromagnetic compatibility generic immunity standard - part 1 : Residential, Commercial and Light Industry. EN60687: 1996, Alternating current static watt-hour meters for active energy- (Class 0.2s and 0.5s). EN 61036: 1996, Alternating current static watt-hour meters for active energy- (Class 1 and 2). EN 61268: 1996, Alternating current static var-hour meters for reactive energy- (Class 2 and 3).
The A1700 with the large character display conforms to:
The essential requirements of the directive 2004-22/EC on Measuring Instruments (MID)
The general requirements and particular requirements of EN 50470 Parts 1 & 3, and complies with Class M2 Mechanical environment and Class E2 Electromagnetic Environment
IEC 62053 - 21 kWh, Class 1 & Class 2 Static
IEC 62053 - 22 kWh, Class 0.2 and 0.5 Static
IEC 62053 - 23 kvarh, Class 2 and 3 Static
IEC 62052 - 11 General Requirements
IEC 62053 - 61 Power Consumption and Voltage Requirements
EN 50470 1-3 kWh Class A, Class B or Class C
The user can therefore be confident that, provided the guidelines and instructions are properly followed, all units installed will satisfy the requirements for residential, commercial and light industrial premises.
Elster Metering Systems holds on record the appropriate Declaration of Conformity, and supporting documentation, against which the CE mark is affixed. Devices for metering and billing electrical energy described in this manual are supplied for use in a ‘Fixed Installation’ only. Devices described are a ‘component of a system only’ and therefore outside the scope of European Directives 2002/95/EC RoHS (Restriction of the Use of Certain Hazardous Substances in Electrical Equipment) and 2002/96/EC WEEE (Waste Electrical and Electronic Equipment).
Installation Instructions 9 ______________________________________________________________________________
5 INSTALLATION
5.1 Receiving the Equipment
Check that the meter type is correct for the installation. Remove the equipment from its container and inspect for damage. If damage has been sustained in transit a claim should be made immediately to the transport company and a report sent to the Elster Metering Systems or their branch office or agent.
5.2 Handling In its container the equipment is very robust and no special handling precautions are required. Some care should be taken when the equipment is unpacked to avoid marking or scratching it.
5.3 Storage If the equipment is not required for a prolonged period, the meter should be returned to its original packing (including plastic bag) and stored in a dry place. Storage temperature: -25° C to +70° C Humidity: Annual mean 75% (for 30 days spread over one year, 95%)
5.4 Installation Site The site should be free from excessive vibration and preferably have a clean, dry atmosphere. For optimum viewing of the display the meter should be mounted at eye level and within ±30° of the vertical. Avoid mounting the meter in direct sunlight. Note that the meter is constructed to BS EN 61010 -1 Safety Class II (All Insulated) and that no Safety Earth is required.
5.5 Installing the Meter 5.5.1 Mechanical
1. The meter must be securely fixed to the wall using all three fixing positions. (See Figure 3). The top fixing can be used in three positions
2. The current terminals will accept a cable size of 35 sq. mm maximum. The screws are M6 pinch screws and should be tightened to a torque of 2.2 N m (minimum), 2.8 N m (maximum)
3. The voltage terminals (for transformer connected meters) will accept a cable size of 5 sq. mm maximum. The screws are M3 pinch screws, which should not be tightened more than 0.45 N m
4. The auxiliary terminals will accept a cable size of 1.5 sq. mm maximum. The screws are M2.5 pinch screws, which should not be tightened more than 0.34 N m. In order not to stress the retainer inside the terminal the cable size must not be less than 0.4 sq. mm minimum. Single strand wire is recommended but if multi strand wire is used, it must not be folded prior to insertion into the terminal
10 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
5. An appropriate fuse must protect any auxiliary output circuits that are connected to an a.c. supply
6. For direct connected meters, ensure that the voltage connection links are correctly positioned
7. Check that all screws are tight
8. Fit the terminal cover plate and terminal cover, See Figure 3 (standard terminal cover), Figure 3A (short terminal cover and DIN standard accessories terminal cover)
5.5.2 Electromagnetic Compatibility (EMC) The A1700 meter has been designed and tested for compliance with the EMC Directive.
It is, however, the responsibility of the installer for ensuring that a system conforms to the Directive.
In order to assist the installer the following guidelines are given: -
1. Keep a.c. circuits and d.c. circuits separated by a minimum of 50mm where possible 2. Where a.c. and d.c. circuits must cross, do so at right angles to each other 3. The cables for each circuits must be bunched together to minimise the loop area
enclosed 4. The cables for the relay outputs and auxiliary inputs must use a twisted pair 5. Where the environment is electrically hostile screened, twisted pair cable may be
required. The screen must be connected to earth at one point only 6. Ancillary equipment must also be CE marked 7. If interposing relays are used (a.c. or d.c.) then these must be correctly and
adequately suppressed
WARNINGS
Cables for the auxiliary terminals should be routed straight down or routed sideways using the two knock-outs in the terminal cover. They should not cross the centre line. Cables at potential greater than 40V should remain segregated from those at lower voltages. The Installer is responsible for ensuring that all connected cables are adequately rated for the application and all voltage and signal circuits are adequately protected by fuses. It is recommended that direct connected meters are protected by fuses equal to the meter rating i.e. 100A fuse for a 100A meter. Failure to do so may result in damage or fire.
© Elster Metering Limited - M120 001 7S - 5/2007
Installation Instructions 11 ______________________________________________________________________________
6 TERMINAL ARRANGEMENTS
Figure 1 shows the general terminal arrangements of the meter.
The terminal functions are as follows: - a. Terminal 1, 2 & 3 Phase A b. Terminal 4, 5 & 6 Phase B c. Terminal 7, 8 & 9 Phase C d. Terminal 10 &11 Neutral NOTE 1: These are the phase current and voltage terminals. NOTE 2: Meter connections must always be made as detailed on the diagram supplied with the meter.
7 COMMISSIONING
7.1 Initial Checks Check that the supply rating on the nameplate and the meter configuration agree with the system supply being used.
Check that the connections shown on the connection diagram agree with terminal block arrangement.
Check that the wiring connections are correct and that there is no danger of the low voltage signal circuit coming into contact with high voltages.
7.2 Power on
WARNINGS
Live terminals will be exposed if the terminal cover and terminal cover plate are removed.
The circuit board under the main cover may be at line potential. Contact with this circuit board may result in electrical shock.
Observe all Safety issues in Section 3.
Check that the terminal cover plate and terminal cover are fitted.
Switch on the a.c. supply.
12 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
© Elster Metering Limited - M120 001 7S - 5/2007
7.3 System Test
The liquid crystal display on the meter should immediately show data. The meter may then start to autocycle through any register data programmed for the autocycle mode.
Two indicators, in the form of pulsing LED’s are provided. The right indicator monitors active energy and left indicator monitors reactive energy.
The LED's will be continually 'ON' if the connected active/reactive load is below the anti-creep threshold, but will pulse at a rate proportional to load if above that level.
8 READ WITHOUT POWER A1700 type PB****S***
Read without power is supported by an Optional Battery Housing with a PP3, NiMH, 9V rechargeable battery that fits under the terminal cover (See Figure 4). The battery connects to the meter terminal block via a four pin connector which is mechanically polarised and has a locking mechanism. Data can be viewed on the LCD by pressing the display pushbutton or read via the optical communications port.
WARNING – Use only the battery supplied with the meter. If a voltage of greater than 16V (d.c. or a.c.) is connected to the battery connection an internal fuse will operate. Normal meter operation will not be effected. The fuse is not accessible externally and it will be necessary to return the meter to Elster Metering Systems to replace the fuse.
8.1 Battery Installation 1. Observe all safety precautions in Section 3 of this manual
2. Make all required connections to the meter (see Section 5)
3. If meter commissioning is required before the Battery Housing is fitted, this should be carried out first. However all meter supplies must be isolated again before proceeding to the next stage (See Section 3 on Safety Issues)
4. Plug the lead from the Battery Housing into the four pin socket in the terminal block (See Figure 4) making sure it clicks into place. Note that the connector is mechanically polarised
5. Hang the Battery Housing on the terminal cover screw fixing bosses (See Figure 4)
6. If the battery is known to be charged, the battery function can now be tested (See Section 8.2)
If the battery is discharged, then it should be connected to the energised meter for at least 48 hours before conducting the battery function test
Installation Instructions 13 ______________________________________________________________________________
8.2 Testing the Battery Read Operation 1. With all meter supplies removed, press the display pushbutton and keep it pressed
until the display activates (in about 2 seconds). Note that during this 2 second period the red test indicators will be on
2. Further presses of the display pushbutton will cause the display to step through the normal display list (default and consumer displays)
3. Once the battery operation has been activated, data can also be read via the optical communications port using a PC and probe
4. If, after 30 seconds, the display pushbutton has not been pressed or the optical port has not been used, battery operation will be deactivated
8.3 Return of a.c. Supply If the meter a.c. supply returns while the Read Without Power battery function is active, the meter will immediately terminate the function and start a normal power-up
The display will show ELSTER METERING and both red test indicators will initially be on. If the optical communications port is being used when the a.c. supply returns the communications session will be interrupted. The communications session must be restarted when the meter is fully functional
9 AUXILIARY VOLTAGE FOR POWER SUPPLY A1700 type PB****T***
A1700 meters designed for auxiliary power operation are fitted with a four pin connector to enable the meters to be energised from a single phase a.c. supply which is independent of the measurement voltages.
The connector which is mounted in the terminal block (See Figure 4) is mechanically polarised and has a locking mechanism.
In order to facilitate installation, a cable terminated with a mating connector is supplied with the meter.
9.1 Auxiliary Supply Connection 1. Observe all safety precautions in Section 3 of this manual
2. Remove the meter terminal cover and terminal cover plate
3. Make all required connections to the meter (see Section 5)
4. Using the cable supplied, push the connector into the mating socket (See Figure 4) in the terminal block until it clicks into place
5. Connect the cable with the brown identifier to the live terminal of the auxiliary supply via a suitable fuse (Auxiliary voltage surge at switch on – 4A for 0.002 seconds)
6. Connect the cable with the blue identifier to the neutral terminal of the auxiliary power supply
7. Note that the routeing for the cables should follow the EMC guidelines in Section 5.2.2
8. When the installation has been completed commissioning can commence. Note that the meter will not function if the auxiliary power supply is not energised.
14 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
© Elster Metering Limited - M120 001 7S - 5/2007
9.2 Technical Data Auxiliary Voltage Operating Range Minimum: 70V Maximum: 265V Frequency: 50Hz or 60Hz Burden Single phase: 1.9W 4.17VA Surge current Auxiliary voltage surge current at switch-on: 4A for 0.002 seconds Insulation
Between
a) The auxiliary voltage and the measurement voltage: 1kV a.c. for 60 seconds b) The auxiliary voltage and the measurement current: 2.5kV a.c. for 60 seconds c) The auxiliary voltage and relay outputs: 4kV a.c. for 60 seconds External cable supplied for the auxiliary voltage connection: 4kV a.c. for 60 seconds
10 FAULT FINDING GUIDE Because of the integrated nature of the design of the A1700 meter, it is not possible to fault find without specialised equipment.
It is therefore recommended that faultfinding is limited to deciding whether the fault is inside or outside the meter. If the meter is not functioning correctly, the fault finding guide in Figure 5a should be followed.
For transformer operated meters, if the meter is not registering correctly the fault finding guide in Figure 5b or 5c should be followed.
Faulty meters should be returned to Elster Metering Systems for examination and repair.
Installation Instructions 15 ______________________________________________________________________________
11 HAZARDOUS SUBSTANCES
11.1 Batteries If the main cover is removed from the meter then a Lithium manganese dioxide battery will be exposed. An optional PP3 Nickel Metal Hydride battery is also used to support Read Without Power.
These batteries are completely safe under normal conditions. However, they must never be recharged except in accordance with Manufacturer instructions, disassembled, heated above 100°C, incinerated, nor have the contents exposed to water.
Fire, explosion or severe burns may result if these instructions are disregarded.
In the interests of safety, environmental protection and possible legislation, these batteries require careful disposal.
Before arranging for the disposal of these cells, users should satisfy themselves that the proposed means of disposal is both safe and compliant with local legislation requirements.
Elster Metering Systems would like to draw the user's attention to the International Standard for Lithium Batteries - IEC 60084-4. - which gives further information about the handling, storage, transport and disposal of lithium cells.
The user should contact Elster Metering Systems should difficulties arise in arranging proper disposal. They will if practical, help the user identify safe disposal means.
11.2 Liquid Crystal Display Liquid crystals are toxic. If a display is damaged, avoid contact with the liquid.
If the liquid makes contact with the skin it must be washed off immediately with water.
Seek medical advice.
16 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
© Elster Metering Limited - M120 001 7S - 5/2007
17 RL1 N/O18 RL1/3 COM19 RL3 N/O20 RL2 N/O21 RL2/4 COM22 RL4 N/O
Optional Relays 1 to 4
Terminal 1, 2 & 3 Phase A Terminal 4, 5 & 6 Phase B Terminal 7, 8 & 9 Phase C Terminal 10 &11 Neutral
Figure 1: Terminal Arrangements
Installation Instructions 17 ______________________________________________________________________________
a
b
Terminal Pair a (Com) b
Relay 1 18 17 Relay 2 21 20 Relay 3 18 19 Relay 4 21 22
Figure 2 : Relay Contact Output Circuit
18 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
M inimum installa tion clearance r equired betwee n centre line of upper mounting screw and anyo bstruction direc tly above the m eter
278.6
17 3.5
179.5 213199.5
59.123.89.0 DIA x 31.5 DEEP5.5 DIA X 6 .3 DEEPCAB LE ENTRYCABLE H OLES5.5 DIA
CABLE H OLES
140.0150.0
3 0.0
81.0
208194.5174.5
23.8
59.1
140.0150.0
81173.5
278.6
cable holes5.5 dia x 6.3 deep
cable holes9.0 dia x 31.5 deep
Cable entry5.5dia
30.0
Figure 3: Outline Diagram and Fixing Centres (Standard Terminal Cover)
© Elster Metering Limited - M120 001 7S - 5/2007
Installation Instructions 19 ______________________________________________________________________________
81173.5
220
80
140
150
208194.5
174.5
23.8
Short Terminal Cover
81.0
100.0 80.0 60.0
35.0
74.0
Short Terminal Cover for DIN Standard Accessories
Figure 3a: Outline Diagram and Fixing Centres (Short Terminal Covers)
20 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
© Elster Metering Limited - M120 001 7S - 5/2007
Socket for battery read without power or auxiliarya.c. supply
Figure 4: Battery Housing or A.C. Auxiliary Supply
Installation Instructions 21 ______________________________________________________________________________
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
DisplayOK
LEDPulsing
OK
RelayOutput
OK
a.c.Supply
OK
CurrentSupply
OK
AuxEquip’t
OK
RelayWiring
OK
CheckWiring/Fuses
CheckWiring/Fuses
RepairAux
Equip’t
RepairWiring
MeterOK
ReplaceMeter
END
Check metering load greater than the anti-creep threshold
For meter models with relays fitted
Figure 5a: Fault Finding Chart
22 A1700 Users Manual - Chapter 7 ______________________________________________________________________________
LEDNot Pulsing
No CurrentAppliedto Meter
Any of TwoPhases of Voltage
or Current Connections are
Interchanged(See Table 1)
LEDPulses at
/ Rate13
Any OneCT Connected
in Reverse
Check Programming of
Register Cat.VT RatioCT RatioCT Error
All Three CTConnections are Reversed. (LED
Pulses Full Rate)
Any Two CTConnections are
Reversed(LED Pulses
Rate) 1/3
MeterRegistersReverseEnergy
Register Reading is
Low
Check MeterVoltage Fuses
Reverse PhaseSequence on
Voltage or Current(See Table 2)
LED Pulses /12 Rate
3 Phase, 4 Wire CT Operated kWh MetersFault Finding Chart
Table 1 Table 2 Voltage Connection Current Connection Voltage Connection Current Connection
A B C A B C A B C
A C B B A C C B A
A C B B A C C B A
A B C A B C A B C
A B C A B C
B C A C A B
B C A C A B
A B C A B C
Represents Wrong Connection Standard Connections Voltage: A B C Current: A B C
Figure 5b: 3 Phase 4 Wire CT Operated Meters
© Elster Metering Limited - M120 001 7S - 5/2007
Installation Instructions 23 ______________________________________________________________________________
LEDNot Pulsing
No CurrentAppliedto Meter
Any of the TwoPhases of Voltage
or Current areInterchangedor Reversed
LEDPulses at
/ Rate12
B PhaseConnection
Loose or Missing
Check Programming of
Register Cat.VT RatioCT RatioCT Error
Both the CTConnections are
Reversed
MeterRegistersReverseEnergy
Register Reading is
Low
Check MeterVoltage Fuses
3 Phase, 3 Wire CT Operated kWh MetersFault Finding Chart
Voltage Connection Current Connection
A B C A B C A B C
A C B B A C C B A
C A A C A C
A C A C A C
Represents Wrong Connection Represents Reversed Connection
Figure 5c: 3 Phase 3 Wire CT Operated Meters