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Electrical Applications
Electrical systems
Thermal imaging cameras are commonly used for inspections of
electrical systems and components in all sizes and shapes.
The multitude of possible applications for thermal imaging cameras
within the range of electrical systems can be divided into two
categories: high voltage and low voltage installations.
High voltage installations
Heat is an important factor in high voltage installations. When electrical
current passes through a resistive element, it generates heat. An
increased resistance results in an increase in heat.
Over time the resistance of electrical connections will increase, due
to loosening and corrosion for instance. The corresponding rise in
temperature can cause components to fail, resulting in unplanned
outages and even injuries. In addition, the energy spent on generating
heat causes unnecessary energy losses. If left unchecked, the heat
can even rise to the point where connections melt and break down; as
a result, fires may break out.
Examples of failures in high-voltage installations that can be detected
with thermal imaging:
• Oxidation of high voltage switches
• Overheated connections •
Incorrectly secured connections
• Insulator defects
These and other issues can be spotted at an early stage with a thermal
imaging camera. A thermal imaging camera will help you to accurately
locate the problem, determine the severity of the problem, and
establish the time frame in which the equipment should be repaired.
A wide view of a substation can quickly show areas where unwanted high
resistance connections exist. No other predictive maintenance technology is
as effective for electrical inspections as thermal imaging.
One of the many advantages of thermal imaging is the ability to perform
inspections while electrical systems are under load. Since thermal imaging
is a non-contact diagnostic method, a thermographer can quickly scan a
particular piece of equipment from a safe distance, leave the hazardous
area, return to his office and analyze the data without ever putting himself
in harm’s way.
Thermal imaging cameras allow you to inspect high voltage installations
from a safe distance, increasing worker safety.
Continuity is very important to utilities since many people rely on their
services. Therefore thermal imaging inspections have become the core of
utility predictive maintenance programs throughout the world.
Thermal imaging cameras are used for inspections of electrical systems and
components in all sizes and shapes and their use is by no means limited to
large high voltage applications alone.
Electrical cabinets and motor control centers are regularly scanned with
a thermal imaging camera. If left unchecked, heat can rise to a point that
connections melt and break down; as a result, fires may break out.
Besides loose connections, electrical systems suffer from load imbalances,
corrosion, and increases in impedance to current. Thermal inspections can
quickly locate hot spots, determine the severity of the problem, and help
establish the time frame in which the equipment should be repaired.
Examples of failures in low voltage equipment that can be detected with
thermal imaging:
• High resistance connections
• Corroded connections
• Internal fuse damage
• Internal circuit breaker faults
• Poor connections and internal damage
These and other issues can be spotted at an early stage with a thermal
imaging camera. This will help to prevent costly damages and to avoid
dangerous situations.
Whether you intend to use thermal imaging cameras for
low voltage inspections in production plants, office facilities,
hospitals, hotels or domestic residences, FLIR Systems has
exactly the right thermal imaging camera for the job.
References: Flir Systems
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Key Features
Monitor:
up to 1000 feet (305 meters) of conductive fluid sensing cable and/or spot detectors per zone; 6000 feet (1830 meters) total, or
up to 700 feet (213 meters) of chemical sensing cable per zone; 4200 feet (1280 meters) total
The LDRA6 fully integrates with RLE’s family of leak detection cables. One controller can monitor an area for both water and chemical leaks with our distinct leak detection cables.
Create a unique combination of zone leak detection and dry contact alarm annunication
Adjustable leak thresholds fine-tune the system
Supervised inputs monitor cable for breaks and contamination
Form C relay output for each input enables communication with BMS/NMS/BAS via Modbus RTU (EIA-485)
One tri-color notification LED per input, and one audible alarm
Included Equipment: LDRA6 alarm panel
Additional Requirements: Isolated RLE power supply, leader cable, end-of-line (EOL) terminator, sensing cable (as needed for application)
Power: Requires an isolated power supply.
24VDC Isolated @ 600mA max.; requires RLE power supply PSWA-DC-24 (not included)
Inputs
Leak Detection Cable: Compatible with SeaHawk sensing cable and SD-Z and SD-Z1 spot detectors (not included)
Cable Input: Requires 15ft (4.6m) leader cable and EOL terminator for each zone (not included)
Maximum Length: 1000 feet (305m) of conductive fluid sensing cable and/or spot detectors per zone; 6000 feet (1830m) total, or 700 feet (213m) of chemical sensing cable per zone; 4200 feet (1280m) total
Detection Response Time Digital: When used with conductive fluid sensing cable or chemical sensing cable, 20-3600sec, software adjustable in 10 second increments; ±2sec Dry Contact NO/NC.
Outputs
Relay: 1 Form C Summary Alarm Relay, 6 Form C alarms, one per input/zone 1A @ 24VDC, 0.5A resistive @ 120VAC; Configurable for supervised or non-supervised, latched or non-latched
Communication Ports
EIA-232: 9600 baud; Parity none; 8 data bits, 1 stop bit
EIA-485: 1200, 2400, 9600 or 19,200 baud; Parity none, odd, even (programmable); 8 data bits, 1 stop bit
Protocols
Terminal Emulation (EIA-232): VT100 compatible
Modbus (EIA-485): Slave; RTU Mode; Supports function codes 03, 04, 06, and 16
Alarm Notification
Audible Alarm: 85DBA @ 2ft (0.6m); re-sound (disabled, 8,16 or 24 hours)
Visible Alarm: LED: Alarm: red; Cable Fault: yellow
Front Panel Interface
LED Indicators: Power: 1 green (on/off); 1 tri-color Status LED per zone (6 total) (Power On: green; Alarm: red; Cable Fault: yellow)
Push Buttons: Quiet/Test/Reset: 1
Operating Environment
Temperature: 32° to 122°F (0° to 50°C)
Humidity: 5% to 95% RH, non-condensing
Altitude: 15,000ft (4572m) max.
Storage Environment: -4° to 158°F (-20° to 70°C)
Dimensions: 10.5″W x 8.0″H x 2.0″D (267mmW x 203mmH x 51mmD)
Weight: 4 lbs. (1.82kg)
Mounting: Wall mount enclosure
Certifications: CE; ETL listed: conforms to UL 61010-1, EN 61010, CSA C22.2 No. 61010-1, IEC 61326:1997; RoHS compliant
Energy Metering for Tenant Billing
List Price: $0.00
Our Multi-Circuit Monitor power monitoring system provides a convenient solution for monitoring multiple electrical services which share a common voltage source. It also reports diagnostic information such as power factor, volts, amps, and kVAR, over an RS-485 network using the industry standard Modbus® communication protocol. To protect valuable equipment, it has built-in alarm registers for over- and under-voltage, current, and kVA.
The monitoring capabilities and open systems compatibility of the H8238 make it the ideal power monitoring solution for OEM, tenant submetering applications, and load management of power distribution units commonly used in internet data centers. The meter is a UL508 open type device without enclosure.
APPLICATIONS
Tenant submetering
Real-time power monitoring
Activity-based costing
Managing loads
Monitor power parameters from up to 8 services with one device
Save labor and installation costs by monitoring up to eight 3Ø, (or six 3Ø plus neutral current) loads from a single service with common voltage connections
Eliminates the need to install multiple transducers – fewer components to install…saves time and space
Easy connection to up to 24 industry standard five-amp CTs
Modbus communications for efficient data collection
Improve monitoring system efficiencies by accessing 26 data points per circuit, plus alarms, with one RS-485 drop
Daisy chain up to 30 units on a single drop…easy wiring
Field-selectable address, baud rate, parity and wiring connections…simple configuration
The AMR (auto meter reading) is an I/O module that has been specifically designed for the special needs of auto meter reading applications. The AMR can be interfaced directly with the output of various types of pulse output meters (electricity, water, gas, BTU) and the data collected from the various meters sent to a central host via its RS485 interface. Some special features which distinguish it from regular I/O modules are:
– noise filtering from the pulse input to prevent miscounts
– EEPROM memory to retain count data in case of power interruption
– accommodates up to 16 channels of pulse input
– dry contact channel input that eliminates the need for additional power supply
– synchronize retain count with actual meter display
– rechargeable battery backup option to maintain at least 8 hours of continuous operation during a power outage
and many more!
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