Appendix J - AMRS Meter Specification 2021.pdf

AMRS Meter Specifications v.09.29.21

Appendix 3

1.1 AMRS Electric Meter Specifications

The AMRS Compliant Electric Meter shall meet Department of Defense cybersecurity in addition to the following requirements:

Onboard memory Onboard Ethernet communications, 10/100 base with RJ45 connector or receptacle Modbus/TCP communication protocol is required Front display with ability to display all measured values Current transformer shorting blocks Minimum of one (1) external RS485 serial port Minimum of two digital and one analog input(s) that shall count pulses from other devices If the electric meter does not have the following capabilities on-board, additional modules or devices listed below shall be required within the electric meter enclosure:

Stand-alone step-down transformer compatible with the system voltage that is being monitored Stand-alone DC power supply for external devices Digital and analog input/output terminal blocks

1.2 AMRS Compliant Meter List

All networked devices, their integrated firmware and software will be approved by the PMO for use in the AMRS. PMO approval is contingent upon the device, in its fielded configuration, passing USAF cyber and AMRS compatibility testing.

1.3 Meter Installation Guidelines

Contractor shall assume all existing equipment is working properly. If during the post award survey portion of the SOW an existing piece of equipment is found to be malfunctioning, then the contractor shall bring it to the government's attention to determine how to proceed. An RFI shall be submitted. This may require a contract change to delete this meter from the scope or to add a new meter.

All due diligence to survey the existing site conditions is the responsibility of the contractor.

New electric meters shall be installed adjacent to the main distribution panel in a separate enclosure 5 feet above the ground unless otherwise noted.

AMRS Meter Specifications Appendix 3

All metering device labels shall be white on black phenolic no smaller than 1” x 3” New meter installations shall include the installation of new, properly sized, split or solid core current transformers (CTs). Accurate sizing of new CTs is the responsibility of the contractor. Existing, unused CTs are to be removed if possible. If removal is not possible, existing CTs must be shorted out.

Instructions explaining how to operate the CT shorting block must be visible inside each meter assembly If CT installation method includes disturbing the bonds of existing cables or wiring within the gear, before and after IR scans shall be performed before removing and after torqueing the connections to ensure the integrity of the conductor bonds.

Meter enclosures shall include finger safe voltage and current safety disconnects The meter must not require utility outages for servicing Meters shall have control power regardless of breaker position.

All meter enclosures shall be fed by a load break 3-pole fusible disconnect switch that is external of the meter assembly. This safety disconnect switch shall be marked as follows “Meter Disconnect NOT Service Equipment” per the NEC

New electric meter supply voltages shall be acquired by means of voltage taps from the bus or system breakers for the voltage system that the AMRS meter is monitoring.

Insulation piercing connectors are not an approved method and energized electrical work will not be permitted.

Electric meters with gas or water meters connected shall have two internal registers configured - one for a raw pulse count and one for a weighted pulse count based on the scaling of the connected gas or water meter.

In the event communications equipment and/or a metering device has to be located in an exterior location, the meter enclosure must be a lockable NEMA 4 enclosure. All new interior communications equipment and metering devices are required to be enclosed in a lockable NEMA 3 enclosure unless otherwise noted

1.4 Cabling Installation Guidelines

New meter installations shall be connected via CAT6 cable from the meter, to a wall outlet in the mechanical room, to a patch panel in the communications room, and then to the AFnet switch in the communications room. CAT6 cable runs are not to exceed 328 feet including patch cords.

Preferred technical approach to network communication cabling in excess of 328 feet is:

fiber optic cable and fiber media converters with dedicated power outlets.

Fiber media converter shall be installed in the communications room within 6 feet of the network switch and within 6 feet of the electric meter enclosure.

Communication receptacles accessible to the public must be installed in lockable enclosures.

Cable labels shall be permanent, wrap-around and self-laminating with text generated by a mechanical device. Labels shall be applied at both ends of the cable, visible during normal maintenance of the infrastructure and resistant to environmental conditions.

All data cable test results (including fiber) shall be completed only after the cable has been terminated in its permanent location, temporary cable test results will not be accepted.

Surge protection is required on all communication cabling extending from the exterior to the interior of a facility. This includes gas meter communication cables from the exterior to the interior of the building.

AMRS Meter Specifications Appendix 3

Surge suppression devices shall be installed w/in 3 feet of the building entrance inside the facility unless otherwise noted. Devices shall be easily accessible and labeled to aide in location during future troubleshooting efforts.

Surge protection devices shall be Power over Ethernet (PoE) compatible and housed within a lockable enclosure that allows space for a proper cable bend radius

2.0 AMRS Compatible Gas Meter Specifications

AMRS compatible gas metering solutions consist of a componential system to achieve the goal of delivering gas consumption data into the AMRS. To accurately scale output pulses the contractor shall obtain building gas usage from base personnel, taking into account peak demand when sizing the components that are necessary as well as determining peak pulse rate as to not saturate the receiving device and risk losing captured pulse data.

Pulse kit must be able to produce a two-wire (Form A) pulse output via RS485 cable Gas meter or attached pulse kit must include a visual register or dial All new gas meter assemblies shall include upstream strainers All meter labels shall be white on black phenolic

3.0 AMRS Compatible Water Meter Specifications

AMRS compatible water metering solutions consist of a componential system to achieve the goal of delivering water consumption data into the AMRS. To accurately scale output pulses the contractor shall obtain building water usage from base personnel, taking into account peak demand when sizing the components that are necessary as well as determining peak pulse rate as to not saturate the receiving device and risk losing captured pulse data.

Pulse kit must be able to produce a two-wire (Form A) pulse output via RS485 Water meter or attached pulse kit must include a visual register or dial All new water mater assemblies shall include strainers All meter labels shall be white on black phenolic