 
Electrical Services Laboratory
The Department has a wide range of laboratory
facilities to support teaching, research and consultancy in electrical
services. These facilities are suitable for testing and commissioning
of electrical installations, testing of electrical equipment, power quality
analysis (harmonics, transients, etc.), electro-magnetic field measurement,
lightning detecting and monitoring systems, and others.
| Impulse Current Generator
(ICG) is one of major equipment for research in lightning-protection.
This testing set has a capability of generating an impulse current
of 2-40kA with the waveform of 8/20us. Such an impulse current can
be used to test surge protective devices, to create simulated lightning-induced
electro-magnetic environments (such as impulse fields in a space,
and voltage/current surges on wires, etc.) |
 |
| Integrated Lightning Detector
was developed for the field observation of lightning activities. It
is capable of recording the broadband vertical electrical fields,
3-dimentinal magnetic fields and optical radiations from lightning
in all directions. Shown in right in the figure is a rotating-vane
field mill developed recently, which is capable of making measurements
of electrostatic fields in a range of 0 ~ กำ70 kV/m with a sensitivity
of 5V/m. |
 |
| Shown in the figure are
the 3x1500VA linear power amplifiers (0-30kHz) together with power
analyzer PM3000A. Together with a PC, these power amplifiers can simulate
electromagnetic disturbances for immunity tests, such as harmonic
current/voltage, voltage transients, low-frequency electric and magnetic
fields with the aid of antennas. |
|
| Shown in the figure is
a platform for current inject tests in a LV switchboard. It has one
1600A motorized air circuit breaker, one 400A MCCB, and a number of
protective current transformers and IDMTL relays. With this platform
students can perform both primary/secondary current injection tests,
and learn the characteristics of protective devices used in LV switchboards. |
|
The following is a list of major equipment
available in the electrical services laboratory:
- Yokogawa Digital Scope DL708E and DL750L (8 channels, 12bits 10 MS/s)
- Dranetz Power Platforms PPI
- SIEMENS P513 OSCILLOSTORE
- NI waveform capture board + PC (4 channels, 30MS/s )
- Electric and magnetic survey meters (PMM8053, PMM8051, HI3603, FieldStar1000, EMDEXII)
- Spectrum Analyzer SA-7270, and Broadband E-Field Antenna SAS-22/A (2-MHz-2000MHz)
- 30kA circuit breaker testing set
- Primary current injection testing set
- Secondary current injection testing set
|
