Unique performance

The Metrum PQ-instrument series possesses a unique cost/performance ratio, continuously measuring energy and power quality (3-phase) and reporting all deviations to a central database. Additionally, several general purpose inputs facilitate measurements of other quantities, such as temperature, pressure, and speed.

The instruments of the PQ-series are specifically designed for normative measurements in the electrical grid of utilities and industrial environments.

There is a huge demand for these products due to the new international regulations for power quality issues in electrical grids and delivery points.

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Metrum PQ140

Normative reference instruments for utilities and industries

The Metrum PQ-units are developed to perform according to the class A norm (IEC 61000-4-30), and they calculate the measurement parameters according the EN 50 160 voltage quality norm.

The unique function of the Metrum PQ-units is that they perform the report analysis directly in the instruments before sending the information back to the central database. The advantage of this is that less information needs to be transmitted to the central analysis system.

Technical specifications

Measurement Inputs

Parameters Specification Information VQ120 VQ140 PQ110 PQ120 PQ140
Voltage channels 0 - 460 V RMS Standard measurements (Class A) 3 3 3 3 3
Voltage channels HF Max 6 kV, 1 µs peak detection 3
Current channels 0 - 6 A RMS 4 4 4
General inputs 0 - 20 mA 4 4

Supply

Parameters Specification VQ120 VQ140 PQ110 PQ120 PQ140
Supply voltage 85-264 VAC or 110-375 VDC
Power 5 W 5 W 5 W 5 W 5 W
Built-in backup Yes Yes Yes Yes Yes

Conformance

Parameters Specification Information VQ120 VQ140 PQ110 PQ120 PQ140
IEC 61000-4-30 Class A Reference instrument Yes Yes Yes Yes Yes
IEC 61000-4-7 Harmonics Yes Yes Yes Yes Yes
IEC 61000-4-15 Flicker Yes Yes Yes Yes Yes
EN 50160 Compiled in unit Yes Yes Yes Yes Yes
EIFS 2013:1 Compiled in unit Yes Yes Yes Yes Yes
Norwegian injunction FoL Compiled in unit Yes Yes Yes Yes Yes
PQDIF format Export option Yes Yes Yes Yes Yes

Hardware

Parameters Specification VQ120 VQ140 PQ110 PQ120 PQ140
Memory 128MB 128MB 128MB 128MB 128MB
Sampling rate 12,8 kHz 12,8 kHz 12,8 kHz 12,8 kHz 12,8 kHz
Accuracy < 0,1 % < 0,1 % < 0,1 % < 0,1 % < 0,1 %
Resolution Voltage/current 16 bits 16 bits 16 bits 16 bits 16 bits
Resolution General inputs 12 bits 12 bits 12 bits
Bandwidth Standard 3,5 kHz 3,5 kHz 3,5 kHz 3,5 kHz 3,5 kHz
Bandwidth HF 1 MHz
Input impedance Voltage channels >1 MΩ >1 MΩ >1 MΩ >1 MΩ >1 MΩ
Input impedance Current inputs 10 mΩ 10 mΩ 10 mΩ
Anti-alias filter Yes Yes Yes Yes Yes
PLL synchronization Yes Yes Yes Yes Yes

Communication

Parameters Information VQ120 VQ140 PQ110 PQ120 PQ140
RS-232 Modem port Yes Yes Yes Yes Yes
RS-232 Computer port Yes Yes Yes Yes Yes
CL-port Current loop Yes Yes Yes Yes Yes
Ethernet (RJ-45) Option Option Option Option Option
Modbus TCP/IP Option Option Option Option Option

Physical data

Parameters Information
Size (W x L x D) 160 x 240 x 90 mm
Weight 1,3 kg
Working temperature -10 °C to +55 °C
Humidity 10 % - 85 %, non-condensing