USACE / NAVFAC / AFCESA / NASA UFGS-26 27 13.10 30 (October 2007)
Preparing Activity: AFCESA
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 26 27 13.10 30
ELECTRIC METERS
10/07
NOTE: This guide specification covers the requirements for the installation
of poly-phase electricity meters suitable for billing, allocation of costs,
and recording of data for energy management and control applications and is
intended to comply with the metering requirements of EPACT05.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Brackets are used in the text to indicate designer choices or locations where
text must be supplied by the designer.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
NOTE: Since metering for energy management and costs allocation varies widely,
it is expected that the designer will make significant adjustments and additions
to this guide specification.
NOTE: Use the following related guide specifications for power distribution equipment:
- - Section 26 12 19.10 THREE-PHASE PAD-MOUNTED TRANSFORMERS
- - Section 26 11 14.00 10 MAIN ELECTRIC SUPPLY STATION AND SUBSTATION
- - Section 26 22 00.00 10 480-VOLT STATION SERVICE SWITCHBOARD AND TRANSFORMERS
- - Section 26 23 00 SWITCHBOARDS AND SWITCHGEAR
NOTE: This specification provides guidance for the facility energy manager
or design engineer after determining what data will be gathered and what analysis
procedures will be used.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)IEEE C2(2007; Errata 2007; INT 2008) National Electrical Safety CodeIEEE C37.90.1(2002; Errata 2003; Errata 2004) Surge Withstand Capability (SWC) Tests for Relays and Relay Systems Associated with Electric Power ApparatusIEEE C57.13(2008) Standard Requirements for Instrument TransformersIEEE Std 100(2000) The Authoritative Dictionary of IEEE Standards Terms][INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)IEC 61000-4-5(2005) Electromagnetic Compatibility (EMC) - Part 4-5: Testing and Measurement Techniques; Surge Immunity TestIEC 62053-22(2003) Electricity Metering Equipment][NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)NEMA C12.18(2006) Protocol Specification for ANSI Type 2 Optical PortNEMA C12.20(2002) Electricity Meter - 0.2 and 0.5 Accuracy ClassesNEMA C62.61(1993) Gas Tube Surge Arresters on Wire Line Telephone Circuits][NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)NFPA 70(2007; AMD 1 2008) National Electrical Code - 2008 Edition]1.2 DEFINITIONS
Unless otherwise specified or indicated, electrical and electronics terms used in this specification and on the
drawings shall be as defined in IEEE Std 100.
1.3 SUBMITTALS
NOTE: Submittals must be limited to those necessary for adequate quality control.
The importance of an item in the project should be one of the primary factors
in determining if a submittal for the item should be required.
A "G" following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a "G." Only delete an existing
"G" if the submittal item is not complex and can be reviewed through the Contractor's
Quality Control system. Only add a "G" if the submittal is sufficiently important
or complex in the context of the project.
For submittals requiring Government approval on Air Force projects, a code of
up to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Recommended codes for Air Force
projects are "RE" for Resident Engineer approval, "ED" for Engineering approval,
and "AE" for Architect-Engineer approval. Submittal items not designated with
a "G" are considered as being for information only for Air Force projects.
Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
a. Maintenance manual shall provide:
1. Condensed description of how the equipment operates.
2. Block diagram indicating major assemblies.
3. Troubleshooting information
4. Preventive maintenance.
5. Spare parts information.
b. Provide operation and maintenance manuals required by submittal item "SD-10 Operation and Maintenance Data."
SD-02 Shop Drawings
SD-03 Product Data
Power meters[; G][; G, [_____]]
Current transformers[; G][; G, [_____]]
Potential transformer[; G][; G, [_____]]
Communications module[; G][; G, [_____]]
Protocol modules[; G][; G, [_____]]
Data recorder[; G][; G, [_____]]
Modem[; G][; G, [_____]]
Submittals shall include manufacturer's information for each component, device, and accessory provided with
the meter, protocol module or communications module.
SD-06 Test Reports
Acceptance checks and tests[; G][; G, [_____]]
SD-10 Operation and Maintenance Data
Power meters[; G][; G, [_____]]
Communications module[; G][; G, [_____]]
Protocol modules[; G][; G, [_____]]
Data recorder[; G][; G, [_____]]
Modem[; G][; G, [_____]]
SD-11 Closeout Submittals
System function verification[; G][; G, [_____]]
1.4 QUALITY ASSURANCE
1.4.1 Installation Drawings
Drawings shall indicate but not be limited to the following:
a. Elementary diagrams and wiring diagrams with terminals identified of[ kilowatt][ advanced] meter,[ current
transformers,][ potential transformers,][ protocol modules,][ communications modules,][ Ethernet connections,][
telephone lines]. [For each meter installation, provide a diagram identified by the building number.]
b. One-line diagram, including meters,[ switch(es),][ current transformers,][ potential transformers,][ protocol
modules,][ communications modules,][ Ethernet connections,][ telephone outlets,][ and fuses]. [For each meter
installation, provide a diagram identified by the building number.]
1.4.2 Standard Products
Provide materials and equipment that are products of manufacturers regularly engaged in the production of such
products which are of equal material, design and workmanship. Products shall have been in satisfactory commercial
or industrial use for 2 years prior to bid opening. The 2-year period shall include applications of equipment
and materials under similar circumstances and of similar size. The product shall have been on sale on the commercial
market through advertisements, manufacturers' catalogs, or brochures during the 2-year period. Where two or more
items of the same class of equipment are required, these items shall be products of a single manufacturer; however,
the component parts of the item need not be the products of the same manufacturer unless stated in this section.
1.4.3 Alternative Qualifications
Products having less than a 2-year field service record will be acceptable if a certified record of satisfactory
field operation for not less than 6000 hours, exclusive of the manufacturers' factory or laboratory tests, is
furnished.
1.4.4 Material and Equipment Manufacturing Data
Products manufactured more than 2 years prior to date of delivery to site shall not be used, unless specified
otherwise.
1.5 WARRANTY
The equipment items shall be supported by service organizations which are reasonably convenient to the equipment
installation in order to render satisfactory service to the equipment on a regular and emergency basis during
the warranty period of the contract.
1.6 SYSTEM DESCRIPTION
1.6.1 System Requirements
The metering and reading system, consisting of commercial, off-the-shelf meters, protocol modules, communications
modules, and communication channels, will be used to record the electricity consumption and other values as described
in the sections that follow and as shown on the drawings.
1.6.2 Selection Criteria
Metering components are part of a system that includes the physical meter, data recorder function and communications
(modem) method. Every building site identified shall include sufficient metering components to measure the electrical
parameters identified and to store and communicate the values as required in the following sections. Contractor
shall verify that the metering system installed on any building site is compatible with the facility-wide communication
and meter-reading protocol system.
PART 2 PRODUCTS
2.1 POWER METERS
NOTE: This specification is designed for projects where multiple metering systems
will be installed on the same project. It is expected that different buildings
may have different metering systems depending on the metering system that can
be installed economically for any specific building and that meets the needs
of the facility analysis and billing system.
Metering features that are unique to a building should be listed in a schedule
either in this specification or on accompanying drawings.
2.1.1 Physical and Common Requirements
NOTE: Meters will generally be installed outside the building in a readily
accessible location. In that case, use the socket-mount design. In the situations
where panel-mounting is required, add the panel-mounting section.
a. Metering system components shall be installed according to the Metering System Schedule shown[ in
this specification][ on the drawings].
[b. Power meter shall be socket-mount design.]
[c. Power meter shall be panel-mounted design. Meters shall be semi-flush, back-connected, dustproof,
draw-out switchboard type. Cases shall have window removable covers capable of being sealed against tampering.
Meters shall be of a type that can be withdrawn through approved sliding contacts from fronts of panels
or doors without opening current-transformer secondary circuits, disturbing external circuits, or requiring
disconnection of any meter leads. Necessary test devices shall be incorporated within each meter and
shall provide means for testing either from an external source of electric power or from associated instrument
transformers or bus voltage.]
d. If existing meter base is usable, the meter base determines meter form factor. If a new meter is being
installed, use meter and base form factor of 9S.
NOTE: If the measured load is less than 220 amps, use Class 200 meters for
direct current reading without current transformers.
[e. Use Class 200 meters for direct current reading without current transformers.]
f. Meter shall be a Class 20, transformer rated design.
g. Meter shall be rated for use at temperature from -40 [_____] degrees Centigrade to +70 [_____] degrees
Centigrade.
h. Meter shall have NEMA 3R enclosure for surface mounting.
NOTE: Select if the recorded data will be in a module inside the meter or external
in a data logger. The preferred method is to install the recording module inside
the meter case. Some retrofit applications may require an external data logger.
i. Surge withstand shall conform to IEEE C37.90.1.
j. Meter shall have a standard[ 4] [_____]-year warranty.
k. Meter shall comply with IEC 62053-22 (Part 21: Static Meter for Active Energy, classes 0.2S and 0.5S),
certified by a qualified third party test laboratory.
2.1.2 Voltage Requirements
a. Meter shall be capable of connection to the service voltage phases and magnitude being monitored.
If the meter is not rated for the service voltage, provide suitable potential transformers to send an
acceptable voltage to the meter.
b. Meter shall be capable of connection to the service voltage indicated in the Metering System Schedule:
c. Meter shall accept independent voltage inputs from each phase. Meter shall be auto-ranging over the
full range of input voltages.
d. Voltage input shall be optically isolated to 2500 volts DC from signal and communications outputs.
Components shall meet or exceed IEEE C37.90.1 (Surge Withstand Capability).
e. The Contractor shall be responsible for determining the actual voltage ratio of each potential transformer
. Transformer shall conform to IEEE C57.13 and the following requirements.
1. Type: Dry type, of two-winding construction.
2. Weather: Outdoor or Indoor rated for the application.
3. Frequency: Nominal 60Hz, 50Hz for those bases that operate on 50Hz.
4. Accuracy: Plus or minus 0.3% at 60Hz or 0.3% for those systems that operate at 50Hz.
2.1.3 Current Requirements
a. Meter shall accept independent current inputs from each phase. Current transformer shall be installed
with a full load rating as shown in the schedule.
b. Single ratio current transformer shall have an Accuracy Class of [ 0.3][ 0.6] [ 1.2] with a maximum
error of +/- [ 0.3%][ 0.6%][ 1.2%] at 5.0 amps.
c. Current transformer shall have:
1. Insulation Class: All 600 volt and below current transformers shall be rated 10 KV BIL.
Current transformers for 2400 and 4160 volt service shall be rated 25 KV BIL.
2. Frequency: Nominal 60Hz, 50Hz for bases that operate on 50Hz.
3. Burden: Burden class shall be selected for the load.
4. Phase Angle Range: 0 to 60 degrees.
d. Meter shall accept current input from standard instrument transformers (5A secondary current transformers.)
e. Current inputs shall have a continuous rating in accordance with IEEE C57.13.
NOTE: Since loads in building can vary over time, multi-ratio current transformers
allow the flexibility to change the ratio of the current transformer to match
the load. The accuracy of current transformer performance decreases when the
actual current is in the lower band of its measuring range.
f. Multi-ratio current transformer where indicated shall have a top range equal to or greater than the
actual load. The Contractor shall be responsible for determining the actual ratio of each transformer.
Current transformer shall conform to IEEE C57.13.
2.1.4 Electrical Measurements
Power meter shall measure and report the following quantities:
NOTE: Select each of the following measuring capabilities that are required
and include the abbreviation in the Metering System Schedule for each building.
Since power meters have a service life greater that 10 years, include optional
features that are expected to be used and analyzed over the life of the meter.
a. Kilowatt-hours ("kWh" in Metering Systems Schedule) of consumption. Cumulative.
b. Kilowatts of demand ("kW" in Metering Systems Schedule). Peak average over a selectable demand interval
between 5 and 60 minutes (typically 15 minutes).
c. Reactive power ("kVAR" in Metering Systems Schedule). Measured over the same interval as the peak
kW reading.
d. Power factor ("PF" in Metering Systems Schedule). Measured over the same interval as the peak kW reading.
NOTE: At locations where time of use (TOU) billing is required by the electric
company, this specification provides that all TOD meters cover the same periods
as defined in the next section.
e. Time of use consumption ("TOU" in Metering Systems Schedule). Kilowatt-hours recorded separately for
each period set by programming into the meter. Time periods shall be capable of being changed without
removal from service. The meter shall internally record and store Time of Use data.
1. [Four (4)] minimum [_____] TOU Rates (Registers)
2. [Twenty (20)][_____] Year Calendar
3. [Two (2)] minimum [_____] seasons per year
NOTE: Interval recording is an important tool for analyzing energy consumption
within a building. For billing purposes, real-time reporting is not required.
For non EPACT05 meters, the meter can be read nominally once per month with
all recorded interval data captured at that time. Where real-time data is needed
by an energy management control system (EMCS) or other system, the systems may
have their own connection to the meter or its own current and potential transformers.
f. Interval recording ("IR" in Metering Systems Schedule). Kilowatt-hours shall be recorded for each[
15][_____] minute interval and shall accumulate for[ 30][_____] days. Memory for recording the interval
readings shall be internal to the meter and ANSI C12.19 compliant. Meter shall provide time-stamped readings
for every measured parameter.
g. Meter readings shall be true RMS.
2.1.5 Meter Accuracy
NOTE: Meters used for billing purposes should generally be held to the same
metering accuracies as established standards by utility companies.
Power meter shall provide the following accuracies. Accuracies shall be measured as percent of reading at standard
meter test points.
a. Power meter shall meet NEMA C12.20 for Class 0.2 and IEC 62053-22 accuracy requirements.
2.1.6 An on the Meter Display, Output and Reading Capabilities
Meter shall include the following output signals.
a. The meter will have a face display plate and shall display every electrical parameter indicated to
be recorded. Meters shall not be required to indicate interval data collected in a data logger with a
communications output feature. Peak values, instantaneous and cumulative values shall be displayed.
[b. Meter shall include optical output port capable of 9600 bps communication with a hand-held reading
device. Optical device shall be compatible with NEMA C12.18]
NOTE: The following optional features will usually be deleted. These features
could be used for connection to an Energy Management and Control System.
[c. Meter shall include output options for analog milliamp signals.]
[d. Meter shall have two channels of analog output, 0-1mA or 4-20mA, for positive[ and negative] watt/hour
readings.]
[e. Meter shall include output option for pulse output. KYZ pulse output related to kWatts/HR.]
[f. Meter shall have two form C, dry contact relay outputs for alarm or control.]
2.1.7 Installation Methods
NOTE: Pad-mounted transformers have proven to be very reliable over a long
life span. Installing the meters on the outside of the secondary wiring compartment
has become somewhat a standard installation for military facilities, resulting
in minimal maintenance. However, meters may be installed on the sides of buildings
or within buildings.
a. Transformer mounted (XFMR)
1. Meter base shall be located outside on the secondary side of the pad-mounted transformer.
NOTE: Do not use the stand-mounted method unless the transformer pad is being
poured and the instrumentation conduit can be installed before the pour. Provide
a drawing to show details for mounting and routing conduit and wires.
b. Stand-mounted adjacent to transformer ("STAND" in Metering Systems Schedule)
1. Meter base shall be mounted on a structural steel pole approximately 4 feet from the transformer
pad. See detail on the drawings.
NOTE: Provide a drawing to show details for building mounting and routing conduit
and wires.
c. Building mounted ("BLDG" in Metering Systems Schedule)
1. Meter base shall be mounted on the side of the existing building near the service entrance.
See detail on the drawings.
d. Panel mounted. ("PNL" in Metering Systems Schedule)
1. Meter shall be mounted where directed. See detail on the drawings.
e. Common features.
1. PTs (if required for proper voltage range) and CTs shall be physically connected to the service
entrance cables inside the service entrance disconnect enclosure.
2.1.8 Disconnecting Switches
NOTE: Shorting-type wiring blocks are recommended to allow connections to be
corrected and changed without the necessity of disconnecting power to the transformer,
resulting in another power outage to the building being served.
a. Disconnecting wiring blocks shall be provided between the current transformer and the meter. A shorting
mechanism shall be built into the wiring block to allow the current transformer wiring to be changed
without removing power to the transformer. The wiring blocks shall be located where they are accessible
without the necessity of disconnecting power to the transformer. For multi-ratio current transformers,
provide a shorting block from each tap to the common lead.
b. Voltage-monitoring circuits shall be equipped with disconnect switches to isolate the meter base or
socket from the voltage source.
NOTE: If programming capability is not required, omit the following section.
2.1.9 Meter Programming
a. Power meter shall be programmable by software supplied by the meter manufacturer.
b. Software shall have a user-friendly, Windows-compatible interface.
c. Software shall operate on [Windows][_____] operating systems.
d. Software shall allow the user to configure the meter, troubleshoot meter, query and display meter
parameters and configuration data and stored values.
e. Meter firmware shall be upgradeable through one of the communications ports without removing the unit
from service.
2.2 COMMUNICATIONS
NOTE: Communications features may not be needed. Data logging of one month
of data may be recorded inside the meter. Recorded data may be read simply by
a handheld instrument, if read daily.
2.2.1 Communications Methods
2.2.1.1 Optical Port
The optical port shall communicate with a hand-held reading device according to the following requirements.
a. Communications standards
1. NEMA C12.18
2. MV90 protocol
3. NEMA C12.20
b. Read operations
1. Current kWh values
2. Demand (kW) values since last reset
3. Last reset value
4. Meter status
[5. Load profile]
c. Write operations
1. Meter setup
2.2.1.2 Serial Port
Provide serial port for connection to modem module where required in this specification.
[a. On-Board serial port types]
[1. RS232]
[2. \[RS485]]
2.2.1.3 Ethernet
For those meters using the Ethernet, logged information shall be sent using open standard Internet Protocols.
a. On-board Ethernet port support
1. HTTP
2. SMTP
(a) Modbus
b. Distribute stored data by
1. FTP
[2. E-Mail]
[(a) On-board web server]
2.2.2 Communications Protocols and Methods
Communications protocols and methods shall be native to the meter. Provide communications module(s) as required
to accomplish the following.
a. Meter shall include an IR port ("IR" in Metering Systems Schedule) for communication to external devices
such as handheld readers that support a minimum speed of 9600 baud.
b. [Meter shall include[ one][ RS-232 ("RS232" in Metering Systems Schedule)] or[ one][ RS-485 ("RS485"
in Metering Systems Schedule)] digital communication port. Each port shall be user configurable with
regard to speed, protocol, address, and other communications parameters. Ports shall support a minimum
communication speed of 9600 baud for the RS232 port.]
[c. Meter shall have a port that can be configured as a[ 10/100 Base-T Ethernet port ("BaseT" in Metering
Systems Schedule)]]
[1. A communication module that converts serial RS232 or RS485 to Ethernet will be acceptable.]
[d. Auto Answer minimum 1200 baud internal modem ("A56K" in Metering Systems Schedule). Internal modem
shall include automatic data buffering to provide faster, more reliable communications and the ability
to automatically answer on a connected line.]
[e. Meter shall be equipped with one pulse output channel ("Pulse" in Metering Systems Schedule) that
can be configured for operation as KYZ pulse output.]
2.2.3 Communications Channels Surge Protection
Communications equipment shall be protected against surges induced on its communications channels. Communication
interfaces to all field equipment shall be protected to meet the requirements of IEEE C37.90.1 or the requirements
of IEC 61000-4-5, test level 4, while the equipment is operating. Fuses shall not be used for surge protection.
Metallic cables and conductors which serve as communications channels between buildings shall have surge protection
installed at equipment rated for the application installed at each end, within 3 feet 0.9 meters of the building
cable entrance. Surge protectors shall meet the requirements of the applicable extension of ANSI C62 (for example,
NEMA C62.61).
NOTE: Communication methods, modules and software can be used for automatic
meter reading (AMR). AMR may not be needed. If automatic meter reading (AMR)
is to be implemented, considerable coordination of the communications sending,
receiving and protocols will be required.
2.3 METER DATA PROTOCOL
Power meters shall have communicating data protocols native or provided in supplemental modules to communicate
with the communications methods that follow.
2.3.1 Open Protocol
NOTE: This section should be modified to be facility specific.
Power meter shall support the following open protocols. Contractor shall verify that the meter native protocol
is consistent with the facility data recording and communication and data storage system. Contractor shall provide
additional converters and modules as required for a complete measurement, recording, communicating and data storage
system.
a. Meter shall be fully supported by MV-90 software system or existing AMR software that is MV-90 compatible.
b. For systems that use proprietary software, an alternative, competitive software system must be available.
Systems capable of using more than one brand of commercially available meters are expected. In addition, if
proprietary meter reading software is used, meters are to be capable of being read by more than one manufacturer's
software.
2.4 SPARE PARTS
2.4.1 Parts List
Provide spare parts as follows:
a. Power meter - two for each type used.
b. Current transformer - three for each type used.
c. Potential transformer - three for each type used.
d. Communications module - one for each type used.
e. Protocol module - one for each type used.
f. Other electronic and power components - one for each type used.
2.5 METERING SYSTEM SCHEDULE
NOTE: Each building should be listed on a separate row. Identify the characteristics
for the specific meter and communications method for each building. The following
completed data is an example only. Delete existing values.
Metering System Schedule is available at http://www.wbdg.org/ccb/NAVGRAPH/graphtoc.pdf
NOTE: Provide a drawing to show locations and details for mounting and routing
conduit and wires. Identify CT ratio and multi-tap ratios if known.
PART 3 EXECUTION
3.1 INSTALLATION
Electrical installations shall conform to IEEE C2, NFPA 70, and to the requirements specified herein. Provide
new equipment and materials unless indicated or specified otherwise.
[3.1.1 Existing Condition Survey
NOTE: Remove the following section if existing condition surveys are not required.
The Contractor shall perform a field survey, including inspection of all existing equipment, resulting clearances,
and new equipment locations intended to be incorporated into the system, and furnish an existing conditions report
to the Government. The report shall identify those items that are non-workable as defined in the contract documents.
The Contractor shall be held responsible for repairs of modifications necessary to make the system perform as
required.
]3.1.2 Scheduling of Work and Outages
NOTE: Installation of current transformers and potential transformers will
require that power be disconnected from the transformer and/or building. Provide
coordination steps for the work and require Contractor to perform the work after
normal hours.
The Contract Clauses shall govern regarding permission for power outages, scheduling of work, coordination with
Government personnel, and special working conditions.
[3.2 FIELD APPLIED PAINTING
Where field painting of enclosures is required to correct damage to the manufacturer's factory-applied coatings,
provide manufacturer's recommended coatings and apply in accordance with manufacturer's instructions.
]3.3 FIELD QUALITY CONTROL
3.3.1 Performance of Acceptance Checks and Tests
3.3.1.1 Meter Assembly
a. Visual and mechanical inspection
1. Compare equipment nameplate data with specification and approved shop drawings.
2. Inspect physical and mechanical condition.
3. Inspect all bolted electrical connections for high resistance using low-resistance ohmmeter,
verifying tightness of accessible bolted electrical connections by calibrated torque-wrench
method.
4. Verify grounding of metering enclosure.
5. Verify the presence of surge arresters.
6. Verify that the CT ratio and the PT ratio are properly included in the meter multiplier or
the programming of the meter.
b. Electrical tests
[1. Calibrate watthour meters according to manufacturer's published data.]
2. Verify that correct multiplier has been placed on face or meter where applicable.
3. Prior to system acceptance, the Contractor will demonstrate and confirm the meter is properly
wired and is displaying correct and accurate electrical information.
3.3.1.2 Current Transformers
a. Visual and mechanical inspection
1. Compare equipment nameplate data with specification and approved shop drawings.
2. Inspect physical and mechanical condition.
3. Verify correct connection.
4. Inspect all bolted electrical connections for high resistance using low-resistance ohmmeter,
verifying tightness of accessible bolted electrical connections by calibrated torque-wrench
method.
5. Verify that required grounding and shorting connections provide good contact.
b. Electrical tests
1. Perform resistance measurements through all bolted connections with low-resistance ohmmeter,
if applicable.
2. Perform insulation-resistance test.
3. Perform a polarity test.
4. Perform a ratio-verification test.
3.3.1.3 Potential Transformers
a. Visual and mechanical inspection
1. PT's are rigidly mounted.
2. PT's are correct voltage.
3. Verify that adequate clearances exist between primary and secondary circuit.
b. Electrical tests
1. Perform a ratio-verification test.
3.3.2 Follow-Up System Function Verification
Upon completion of acceptance checks and tests, the Contractor shall show by demonstration in service that circuits
and devices are in good operating condition and properly performing the intended function. As an exception to
requirements stated elsewhere in the contract, the Contracting Officer shall be given 5 working days' advance
notice of the dates and times of checking and testing.
3.3.3 Training
The Contractor shall conduct a training course for meter configuration, operation, and maintenance of the system
as specified. The training shall be oriented for all components and systems installed under this contract. Training
manuals shall be delivered for [_____] trainees with two additional copies delivered for archiving at the project
site. The Contractor shall furnish all audiovisual equipment and all other training materials and supplies. A
training day is defined as eight hours of classroom instruction, including two 15-minute breaks and excluding
lunchtime, Monday through Friday, during the daytime shift in effect at the training facility. For guidance in
planning the required instruction, the Contractor shall assume that attendees have a high school education or
equivalent, and are familiar with utility systems. Approval of the planned training schedule shall be obtained
from the Government at least 30 days prior to the training.
a. Training: The course shall be taught at the project site within thirty days after completion of the
installation for a period of one [_____] day(s). A maximum of [6][_____] personnel will attend the course.
The training shall include:
1. Physical layout of each piece of hardware.
2. Meter configuration, troubleshooting and diagnostics procedures.
3. Repair instructions.
4. Preventive maintenance procedures and schedules.
5. Testing and calibration procedures.