UL 2735 2014-10 PDF

Full title and description

St UL 2735 — UL 2735:2014, Standard for Electric Utility Meters. This voluntary UL safety standard establishes electrical-safety, construction, environmental and performance-related requirements for revenue electric utility meters (static and electromechanical types) including socket-mounted (Type S) and bottom-connected (Type A) meters, and covers meters with one- or two-way communications up to 600 V.

Abstract

UL 2735:2014 defines safety and basic performance requirements intended to reduce electrical, fire and related hazards associated with electric utility meters. The standard addresses physical construction, insulation, protection against electric shock, temperature and overload conditions, provisions for communications modules and remote disconnect features, and tests for durability and environmental exposure. It is intended as a voluntary safety benchmark used by meter manufacturers, test labs and utilities.

General information

• Status: Published — voluntary UL safety standard (used for product certification and utility procurement requirements).
• Publication date: October 6, 2014 (UL 2735:2014 edition).
• Publisher: Underwriters Laboratories Inc. (UL).
• ICS / categories: Electrical energy measurement / metering and electricity supply systems (ICS classifications commonly associated with metering standards: measurement of electrical quantities and electricity supply systems).
• Edition / version: Edition 1 — UL 2735:2014.
• Number of pages: 34 pages (typical published PDF length).

Scope

Applies to electric utility (revenue) meters rated up to 600 V that measure, monitor, record, transmit or receive electrical energy-generation or consumption information. The scope includes socket-mounted (Type S) and non-socket bottom-connected (Type A) meters, meters with communications (carrier, telephone, cable or wireless), and meters with functions such as remote disconnect or load-control signalling; it excludes laboratory test equipment and some component-only configurations. The scope text and example coverage are described in the published standard document.

Key topics and requirements

• Electrical safety: insulation, creepage/clearance, protection against electric shock and short-circuit conditions.
• Fire and thermal safety: evaluation of heating, self-heating, overload and surrounding-temperature performance.
• Mechanical construction: enclosure integrity, terminals, mounting and ingress protection for intended installation conditions.
• Communication modules and interfaces: requirements for integrated communications, modular attachments and remote disconnect features.
• Environmental tests: temperature, humidity, vibration, mechanical shock and surge/immunity where applicable.
• Marking, documentation and information for installation, safe operation and service.
• Test procedures and acceptance criteria used by UL for certification to the standard.

Typical use and users

Used by electric meter manufacturers for design validation and UL certification; by utilities and municipal procurement teams that require or prefer UL 2735-certified meters for field installations; by independent test laboratories and certification bodies performing safety and performance testing; and by integrators and system designers who must ensure meter safety and interoperability in smart-grid deployments. Several major meter manufacturers and vendors publicly reference UL 2735 certification when marketing meters to utilities.

Related standards

Commonly referenced and related documents include UL/CSA safety and equipment standards previously used for meters (for example UL 61010-1 where previously applied), accuracy and performance standards such as ANSI C12.20 and ANSI C12.19, and international meter test and communication standards in the IEC 62052–62057/62056 families. UL has also developed related regional variants (for example work toward UL 2735C for Canada) and guidance for performance testing.

Keywords

UL 2735, electric utility meters, revenue meter, smart meter safety, meter certification, socket-mounted meter, bottom-connected meter, meter communications, meter thermal safety, UL standard.

FAQ

Q: What is this standard?

A: UL 2735:2014 is a voluntary Underwriters Laboratories safety standard titled "Electric Utility Meters" that establishes electrical- and fire-safety, construction and testing requirements for revenue electric meters (published October 6, 2014).

Q: What does it cover?

A: It covers electric utility meters rated up to 600 V including socket-mounted (Type S) and bottom-connected (Type A) meters, meters with one- or two-way communications, remote-disconnect features and related safety and environmental tests; it is focused on reducing electrical and fire hazards associated with meter designs.

Q: Who typically uses it?

A: Meter manufacturers, utilities (procurement and operations groups), independent test laboratories, certification bodies and system integrators use UL 2735 as a safety benchmark and certification target. Utilities and vendors have announced UL 2735 certifications for commercial meter products.

Q: Is it current or superseded?

A: The document published as UL 2735:2014 (Edition 1) is the identified edition (publication date October 6, 2014). Public records and catalog listings show the 2014 edition and references to UL's meter program; no later superseding edition was identified in the searched sources at the time this profile was prepared. If you need an absolute confirmation of current status for compliance or procurement, check the official UL standards catalog or contact UL directly for the most recent change history.

Q: Is it part of a series?

A: UL 2735 is a standalone UL standard focused on electric utility meters; it is related to and used alongside other meter and test standards (ANSI C12 series, IEC 62052–62057 family, and UL/CSA safety standards) and UL has worked on regional variants (for example Canada-focused work).

Q: What are the key keywords?

A: Electric utility meters, revenue meters, UL 2735, smart meters, meter safety, socket-mounted, bottom-connected, communications, remote disconnect, meter certification.