Chapter 7 - Metering Requirements

Distribution Revenue Metering

Requirements for measuring energy in distribution systems.

Active Energy

Energy consumed by users in a distribution system.

Reactive Energy

Energy stored and released by inductive loads.

Demand Metering

Measurement of peak energy usage over time.

Metering Equipment

Devices used for measuring energy and demand.

Revenue Meters

Meters specifically for billing energy consumption.

Instrument Transformers

Devices that convert high voltage/current for metering.

Connection Point

Location where users connect to the distribution system.

Metering Point

Specific location for energy measurement equipment.

Metering Responsibility

Obligations for maintaining and operating metering systems.

Meter Data

Information retrieved from metering equipment for billing.

Access Requirements

Conditions for authorized parties to access metering equipment.

Voltage Transformers

Transformers that reduce voltage for measurement accuracy.

Current Transformers

Transformers that reduce current for measurement accuracy.

Accuracy Class

Specification indicating precision of metering devices.

Type Test Report

Documentation proving compliance with metering standards.

Embedded Generation Companies

Entities generating energy within the distribution system.

Large Customers

Users with significant energy consumption in the system.

Distribution Utilities

Companies managing the distribution of electricity.

Metering Service Providers

Entities providing metering services to users.

Quadrant Measurement

Measurement of reactive power flow in all directions.

ERC Issuances

Guidelines from the Energy Regulatory Commission.

Connection Agreement

Contract outlining responsibilities between users and utilities.

Backup Battery

Power source ensuring meter operation during outages.

Loading Resistors

Devices used to safely dissipate electrical energy.

Security Seals

Devices ensuring tamper-proof metering equipment.

Interconnecting Cables

Wires connecting metering equipment to the system.

Self-Contained Meter

Meter type directly connected to load without transformers.

Transformer Rated Meter

Meter type requiring instrument transformers for operation.

1-phase 2-wire

Single-phase connection using two wires for metering.

3-phase 4-wire, Wye

Three-phase system with four wires, neutral included.

3-phase 4-wire, Delta

Three-phase system with four wires, no neutral.

Voltage Rating

Rated voltage for self-contained and transformer meters.

Current Rating

Rated current typically between 20 to 200 A.

Frequency

Standard operating frequency of 60 Hz.

Unidirectional Active Metering

Measures energy flow in one direction only.

Bi-directional Active Metering

Measures energy flow in both directions.

Programmable Interval Data

Data recorded at programmable 15-minute intervals.

TOU Energy Parameters

Time-of-Use energy metrics for billing purposes.

Communication Capability

Meter must have independent communication ports.

Grounding System

System ensuring safety and reliability of installations.

Test Block or Switch

Device for testing current and voltage in meters.

Sealing Meters

Process of securing meters to prevent tampering.

Commissioning

Process of certifying readiness for service.

Instrument Transformer Testing

Testing transformers for compliance before installation.

Meter Calibration

Process of adjusting meter for accurate readings.

Maintenance Programs

Scheduled activities for upkeep of metering equipment.

ERC

Energy Regulatory Commission overseeing metering standards.

Distribution Utility

Company responsible for electric distribution services.

MSP

Meter Service Provider managing metering installations.

IEC Standards

International Electrotechnical Commission guidelines for equipment.

ANSI Standards

American National Standards Institute guidelines for equipment.

Burden Rating Verification

Testing transformer performance under specified load.

Insulation Integrity

Assessment of insulation effectiveness in transformers.

Wiring Check

Inspection of wiring connections for safety.

Nameplate Check

Verification of specifications on equipment nameplate.

Periodic Calibration

Regular accuracy tests for meters as per ERC rules.

Meter Clock Check

Verification of meter clock against Philippine Standard Time.

Meter Malfunction Verification

Immediate confirmation of reported metering equipment issues.

Meter Data Correction Timeline

Adjustments submitted within billing period or agreed timelines.

Meter Replacement Requirement

Immediate replacement of failed metering equipment.

Traceability of Standards

Calibration linked to national or international standards.

Metering Data Requirements

Data format must align with billing systems.

Authorized Meter Reading

Meter readings conducted by designated utility representatives.

Data Integrity Assurance

Processes ensuring secure collection of meter data.

Meter Register Reading

Used to validate load profile meter data integrity.

Validation of Metering Data

Confirming accuracy using established ERC methods.

Substitution of Metering Data

Replacement values when data is missing or invalid.

Storage Duration of Data

Maintain meter data for at least 5 years.

Confidentiality of Metering Data

Access limited to authorized entities only.

Security of Metering Facilities

Protection against unauthorized access to metering equipment.

Breach of Security Reporting

Immediate notification of any security breaches.

Investigation of Security Breaches

Assessment of impact on metering and energy quantities.

Correction of Metered Quantities

Adjustment recommendations submitted post-security breach.

Compliance Report Submission

Utilities must report adherence to PDC requirements.

Certificate of Compliance (COC)

Required for Embedded Generation Companies to operate.

Regulatory Reset Compliance

Utilities must comply during next regulatory review.

Metering Service Provider Compliance

Must meet PDC standards upon license renewal.

Metering Points Correction Deadline

One year to correct non-compliant metering points.