LumaSHIELD®
Multi-Channel Monitor and Controller for Distribution Transformer Applications
The LumaSHIELD® is a multi-channel signal conditioner compatible with any of LumaSense’s GaAs-based fiber optic temperature sensors. At the heart of the LumaSHIELD® is the LumaSense Semiconductor Band Gap (SCBG) technology which performs measurements using the temperature-dependent bandgap shift of a Gallium Arsenide (GaAs) crystal.
Key Features
- Up to 16 measurement channels
- Total system accuracy (± 0.8 °C)
- Internal reference to guarantee reliability
- No drift, no calibration required
- IEC 61850 compliant
- Light source lasts the life of the transformer
- Local and remote data acquisition
- RS-232, RS-485 and Ethernet1 output with SCPI, Modbus, DNP3 protocols
- Relays and analog output options available
- LCD display with user-definable description for each optical channel
- Use with LumaSense Gallium Arsenide (GaAs) Semiconductor Band Gap (SCBG) fiber optic temperature sensors
Details
The LumaSHIELD®, designed for Smart Grid integration, is fitted with an internal reference that allows regular self-verification and correction of its fully traceable calibration. The internal reference provides long- term accuracy in the adverse conditions encountered in a distribution transformer environment, such as temperature variations, component aging, mechanical shocks and transformer vibrations.
The LumaSHIELD® is equipped with a simple LCD display. Communication options include IEC61850/Ethernet¹, DNP3/Ethernet¹, SCPI and Modbus over RS-232 or RS-485 interface. SPDT-type relays and analog outputs (one per optical channel) are optionally available. A PLC controller is also available to offer extended control capabilities through a wide range of input/outputs.
The LumaSHIELD® has a channel sampling rate of 50 Hz. It is used with standard 62.5/125 micron optical fiber temperature sensors (The LumaSense OTG-T /OTG-TC2 sensors). It also has the ability to read Neoptix, Fiso and Nortech fiber optics. A version is available for 200/230 micron optical fiber sensor models, as well.
¹Ethernet for IEC61850 or DNP3 communication
Typical Applications
- Distribution Transformers and Small Power Transformers
- Smart Grid Temperature Monitoring
- EMI, RFI and Microwave Environments
- Nuclear and Hazardous Environments
- Multi-point long-term monitoring
The Best-in-Class GaAs-Based Solution for Winding Hot Spots
Technical Data
Performance | |
Number of Channels |
3 up to 16 |
Temperature Range | -40 to +230°C (other ranges available upon request) |
Accuracy | ± 0.8°C (Total system accuracy at typical transformer temperatures including signal conditioner and sensor errors) |
Response Time |
0.5 s Typical |
Measurement Resolution | 0.1ºC |
Light Source Life Span | Life of the transformer |
EMI/RFI Susceptibility | Complete immunity |
Interface | |
Display | LCD screen display standard |
Probe Signal Strength Readout | User-definable description for each optical channel |
Calibration | Fully Traceable |
Environmental Specifications | |
Operating Temperature | -40 to +75 °C |
Operating Humidity | 0 to 100% non condensing |
Communication | |
Analog Output |
4-20 mA or 0-1 mA |
Serial Output | RS-232 and RS-485 standard, Ethernet optional |
Relays |
6 C-Form SPDT relays, 5 A @ 250 VAC or 30 VDC, 6 relay status indicators |
Communications |
SCPI and Modbus standard, DNP3 and IEC61850 optional |
Probes | OTG-T, OTG-T+ and OTG-A fiber optic sensors |
T° Data Storage |
> 2,000,000 temperature measurement points |
Electrical | |
Input Power | 12 to 24 VDC |
Surge Protection | 3000V (1EEE C37.90.1-2002) |
Consumption | 2.5 W typical |