Device for control of energy quality parameters (UK1)

The UK1 device is a high-precision measuring device based on advanced digital technologies. The device is used at power supply objects for collecting, processing and storing data about energy quality parameters in accordance with GOST 13109-97.

Functionality
- Direct connection to single-phase and three-phase 0.38 kV networks, connection to networks with larger voltages through measuring transformers;
- Measurement of various energy quality parameters in full compliance with GOST 13109-97;
- Calculation and storing of values of quality parameters instead of results of statistical treatment, which makes it possible to analyze the state of the controlled power network in detail for the whole period of measurements;
 - Stand-alone accumulation of data during more than four months; the accumulated data (measurement results, including measurements at different power supply objects) are stored in the device for an unlimited period of time;
- Statistical treatment of accumulated data and comparison of the results with prescribed energy quality standards;
- User-friendly interface (with a large liquid-crystal display and a keyboard) allowing to control the device with the help of a comprehensive menu system and to view measurement results both in textual and in graphical form;

- Printout of energy quality reports without a PC;
- Two interfaces for communication with PCs or for operation as part of an automated system;
- On-line viewing of accumulated data and current parameters (energy quality parameters existing currently in the power network) and transmission of data to a PC as they become available;
- Non-stop (cyclic) measurement mode for stationary applications, with the possibility of on-line viewing of accumulated data and its transmission to a PC.

Basic characteristics  

Input voltage range (Ua, Ub, Uc):
- base frequency voltage	up to 500 V
- impulse voltage	up to 5000 V
Controlled quality parameters:
- frequency deviation	–2 to +2 Hz    Δ = ±0.03 Hz
- voltage parameters:
steady-state voltage deviation	-50 to +50%     Δ = ±0.5 %
effective value	3 to 500 V    δ = ±0.5 %
- sinusoid voltage curve distortion factor	2 to 50 %     δ = ±10 %
- n-th harmonic voltage factor (n = 2…40)	0.2 to 1 %   Δ = ±0.05 %    1 to 15 %     δ = ±5 %
- zero  phase-sequence voltage unbalance        factor	0 to 10 %    Δ = ±0.5 %
- negative phase-sequence voltage unbalance        factor	0 to 10 %    Δ = ±0.3 %
- voltage variation range	2 to 10 %    δ = ±8 %
- short-term and long-term flicker doses	0.1 to 4    δ = ±5 %
- voltage depression:
depth	up to 100%
duration	0.01 to 60 sec    Δ = ±0.01sec
- temporary overvoltage:
factor	1.1 to 2    δ = ±10 %
duration	0.04 to 60 sec     δ = ±10 %
- impulse voltage
voltage	0.1 to 5 kV
duration	0.5 to 65 мс
Registration of date and time of voltage depressions,  overvoltages and impulses	accurate within       0.01 sec
Quantity of voltage depressions, overvoltages and  impulses registered per day	up to 5460
Stand-alone accumulation of measurements of quality  parameters	min 60 days
Storing of accumulated data about quality parameters	unlimited
Type of channel for data output:
- to a PC	RS-232C
- to a geographically-distributed local-area network	RS-485
Type of printer port	parallel (LPT)
Supply voltage:
ac	110 to 253 V
dc	132 to 297 V
Power consumption	20 VA
Operating temperature range	0 to +50 °С
Dimensions	240х190х120mm
Weight	1.5 kg

         Note.   δ - relative measurement error
                   Δ - absolute measurement error

Application software

The application software delivered along with the UK1 device is designed for detailed analysis of energy quality parameters and remote control of one device or several devices integrated into one system.