Power Meter Locations 2022-06-01T10:57:58+08:00

API – Power Meter Locations

Introduction

The available power consumption data of power meters in UM are divided into 14 different zones. Figure 1 illustrates the relationship between zones and meters. The data is showing the latest power meter locations and refreshed every day.

Figure 1: Relationship between zones and meters

API Reference

Zone Data Dictionary

FieldTypeIndexedDescriptionExample
zoneCodestringYesZone ID (Please refer to List of Zone IDs for details)"zoneCode": "E1-E2"
metersobject[]NoInformation of meters in the zone
zoneGrossFloorAreafloatNoGross floor area (m2) of the zone"zoneGrossFloorArea": 73343
zoneNamestringNoName of the zone, if available"zoneName": "圖書館地面層"

Meter Data Dictionary

FieldTypeIndexedDescriptionExample
codestringYesMeter ID"code": "1A01_1"
descriptstringNoUsage description of this meter"descript": "照明、動力受電櫃"
extraInfostringNoExtra information of this meter"extraInfo": "來電"
typestringNoMeter type (Please refer to List of Meter Types for details)

"type": "來電櫃"

primaryCategoryobject[]NoPrimary category (Please refer to List of Categories for details)"primaryCategory": "QGBT"
secondaryCategoryobject[]NoSecondary category (Please refer to List of Categories for details)"secondaryCategory": "Incomer"

List of Zone IDs

Zone Code
E1-E2E3-E7E11E12
E21E22E32E34
N1-N2N6N8N21
N23N24

Table 1: List of zone IDs

List of Meter Types

Meter TypeTechnical Definitions
來電櫃The electric switchboard to direct incoming electricity from supply source to downstream distribution panels, with necessary switching, current protection, and metering function etc.
電容櫃Capacitor bank is utilized for power factor correction. It can progressively compensate the inductive loading (e.g. electric motors) to make the total load appear to be almost resistive.
普通MCCB電錶Meters on Molded Case Circuit Breakers (MCCB) to count the accumulative electric power consumption by each MCCB for different downstream.

Table 2: Technical definitions of meter types

List of Categories

CategoriesDescription
AHUThe basic function of an Air Handling Unit is to take in outdoor air, re-condition it and supply it to a building, as part of a heating, ventilating, and air-conditioning (HVAC) system.
BasementBasement floors of UM Campus are majorly serve as carpark and MEP plant rooms.
Central Chiller PlantCentral Chiller Plant located at N22 building serve the air condition system for UM Campus north buildings, such as University Hall, Sports Complex, Research Buildings, Faculty of Science and Technology, Faculty of Health Sciences. A central chiller plant usually has higher efficiency than separate chiller plants.
ChillerA chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle for HVAC purpose.
Cooling TowerA cooling tower disposes unwanted heat from a chiller through the cooling of a water stream to a lower temperature.
CW PumpThe pump of cold water on cooling tower loop.
ELVELV systems usually stand for a variety of sub-systems for control and security purpose utilizing Extra-Low Voltage signal, e.g. video intercom, voice broadcasting, CCTV, access control, HVAC control, building management system, data network.
External UserThe feeder serves the external user such as restaurant and retail store.
FireFire service plays an important role in life safety in buildings. It consists of automatic fire alarm system (AFA), sprinkler, hydrant, hose reel, inert gas suppression system.
Heat PumpHeat pump applies the refrigeration-type cycle to absorb heat from a cold space (outdoor) and releasing it to a warmer space (indoor).
Hot Water PumpPump for chiller working in refrigeration-type cycle to deliver heat to indoor.
HVACHeating, Ventilating, and Air-Conditioning. Its goal is to provide acceptable thermal comfort and indoor air quality.
HVAC Heat PumpHeat pump applies the refrigeration-type cycle to absorb heat from a cold space (outdoor) and releasing it to a warmer space (indoor).
IncomerThe cable which directs the electricity from upstream to distribution panel.
LabShort form of laboratory, in where experiments are conducted.
LandscapeLandscape architecture is the design of outdoor areas, landmarks, and structures, incorporating both natural plants and man-made materials, e.g. landscape lighting, fountain, waterfall.
LiftAn elevator is a type of vertical transportation machine which delivers people or goods between floors of a building.
Lighting And SocketLighting includes both illumination of space and decorative purpose with the use of lamps. Socket is for electric appliance to plug-in to use AC power supply.
Others
Plumbing And DrainagePlumbing system is to supply water in a building. Drainage system is for unwanted water or waste to be discharged away.
Primary CHW PumpThe pump of primary chilled water loop (chiller side) in a chiller and plate heat exchanger system.
Pump Cooling FanFan inside pump to prevent overheated.
QGBTShort formed in Portuguese “Quadro Geral de Baixa Tensão”, also known as Low Voltage Switch Board in English, an assembly of switchgear to direct incoming electricity from supply source to downsteam distribution panels, with necessary switching, current protection, and metering function etc.
Refill Water PumpTo refill water to feed and expansion tank for chiller.
Secondary CHW PumpThe pump of secondary chilled water loop (demand side) in a chiller and plate heat exchanger system.
Stage
Swimming PoolSwimming pool located inside Sport Complex.
ValveTo control flow rate of liquid.
VRVVariable Refrigerant Volume is an outdoor condensing unit to circulate refrigerant efficiently within the building to multiple fan-coil units (FCUs) for air-conditioning purpose.

Table 3: Descriptions of meter categories