Obsnap Instruments Sdn Bhd
29A, Jalan SS 15/4C, 47500 Subang Jaya, Selangor, Malaysia.
+603-5621 5786
+603-5621 5829
+60122185651 (Enquiry)
+60162233687 (Vacancy)


GL7-HV High Voltage Module GL 7000 Data Acquisition Equipment

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This is the voltage input module capable to measure high voltage as a AC
power line or an electric vehicle. It can be measured high voltage as maximum
1000V in at fast speed as maximum 1MS/s (1μs interval). Demand to measure
a signal as a control and power line in the inverter-based system used for vehicle
and electrical equipment is increased.

High withstand voltage (maximum input range 1000V)

It can be measured in a safe and reliable by having a
high maximum input voltage and withstand voltage.

Input coupling (DC or AC)

By using the DC and AC coupling feature, the voltage signal of a small
signal superimposed on the input signals or the absolute voltage value
can be recorded.

RMS (effective value) measurement in real time

It is able to handle the measurement for a long time as durability test
by measuring in effective value (RMS).

Application examples

GL7-HV specification

Item Description
Type of module Voltage measurement module - High-voltage model -
Model number GL7-HV
Number of input channels 2 channels
Input method All channels isolated unbalanced input, Simultaneous sampling,
Isolated BNC connector
Sampling speed (interval) 1 M Samples/s to 1 Sample/h (1 μs to 1 hr.)
Built in RAM 2 million samples for each channel
Input coupling and measurement AC, DC, AC-RMS, DC-RMS
Measurement range DC, AC 2, 5, 10, 20, 50, 100, 200, 500, 1000 V Full Scale
DC-RMS, AC-RMS 1, 2, 5, 10, 20, 50, 100, 200, 500 Vrms Full Scale
(Crest Factor: up to 4 in 1 to 200 Vrms range, up to 2 in 500 Vrms range)
Measurement accuracy (*1) DC, AC ±0.25% of Full Scale
DC-RMS Sine wave measurement
±0.5% of Full Scale (at 20 Hz ≤ F ≤ 1 kHz)
±1.5% of Full Scale (at 1 kHz < F ≤ 20 kHz)
Response time: 500ms (Crest Factor is up to 4)
AC-RMS Sine wave measurement
±0.5% of Full Scale (at 100 Hz ≤ F ≤ 1 kHz)
±1.5% of Full Scale (at 1 kHz < F ≤ 20 kHz)
Response time: 500 ms (Crest Factor is up to 4)
A/D converter Successive Approximation type, 16 bits (effective resolution: 1/40000 of the measuring full range in the DC and AC coupling,
1/20000 of the measuring full range in the DC-RMS, AC-RMS coupling)
Input impedance 1 MΩ ±5%
Maximum input voltage Between (+)/(-) terminal 1000 Vp-p
Between channels ((-) terminals) 300 Vrms AC
Between channel/GND 300 Vrms AC
Max. voltage (withstand) Between channels 2300 Vrms AC (1 minute)
Between channel/GND 2300 Vrms AC (1 minute)
Isolation Between input/GND Min. 50 MΩ (at 500 V DC)
Common-mode rejection ratio Min. 90 dB (50/60 Hz, Signal source impedance: Max. 300 Ω)
Frequency response DC Coupling: DC to 200 kHz (+1/-3 dB)
AC Coupling: 4Hz to 200 kHz (+1/-4.5 dB)
Filter Low pass OFF, Line (1.5 Hz), 5, 50, 500, 5k, 50k Hz (at -3 dB, 6dB/oct)
External dimensions (W×D×H) Approx. 49 x 136 x 160mm (Excluding projections)
Weight Approx. 740 g
Subject to the conditions:
¢ Room temperature is 23ºC ±5ºC. ¢ When 30 minutes
or more have elapsed after power was turned on.
¢ Filter is set to 10 or Line. ¢ Sampling rate is set to 1 second.
¢ GND terminal is connected to ground.

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