Arcteq AQ-S215, Instruction Manual

Page: 256 / 289

8.4 Voltage measurement module
Figure. 8.4 - 156. Voltage measurement module.
Connector Description
VTM 1-2 Configurable voltage measurement input U1.
VTM 3-4 Configurable voltage measurement input U2.
VTM 5-6 Configurable voltage measurement input U3.
VTM 7-8 Configurable voltage measurement input U4.
A basic voltage measurement module with four channels includes four voltage measurement inputs
that can be configured freely.
The voltage measurement module is connected to the secondary side of conventional
voltage transformers (VTs) or directly to low-voltage systems secured by fuses. The nominal voltage
can be set between 100…400 V. Voltages are calibrated in a range of 0…240 V, which provides ±
0.2 % inaccuracy in the same range.
The voltage input characteristics are as follows:
• The measurement range is 0.5…480.0 V per channel.
• The angle measurement inaccuracy is less than ± 0.5 degrees within the nominal range.
• The frequency measurement range of the voltage inputs is 6…1800 Hz with standard
hardware.
• The quantization of the measurement signal is applied with 18-bit AD converters, and the
sample rate of the signal is 64 samples/cycle when the system frequency ranges from 6 Hz to
75 Hz.
For further details please refer to the "Voltage measurement" chapter in the “Technical data” section of
this document.
A AQ Q-S215 -S215
Instruction manual
Version: 2.04
255