Hioki MR8827, Instruction Manual

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373
Module Specifications
18.6.10 Model U8974 High Voltage Unit
The accuracy is provided for the condition where the module is installed on the Memory HiCorder at 23°C±5°C
(73°F±9°F), 20% RH to 80% RH, and zero adjustment is executed 30 minutes after power on.
Product warranty
period
3 years
Guaranteed accuracy
period
1 year
Number of input
channels
2 channels
Measurement
functions
Instantaneous value, r.m.s. value (can be changed for each channel)
Measurement range
200 mV, 500 mV, 1 V, 2 V, 5 V, 10 V, 20 V, 50 V/div (mode DC)
500 mV, 1 V, 2 V, 5 V, 10 V, 20 V, 50 V/div (mode RMS)
Measurement
accuracy
±0.25% f.s. (Filter 5 Hz On)
RMS measurement
accuracy
±1.5% f.s. (DC, 30 Hz to 1 kHz, sine waves, response time: slow)
±3% f.s. (1 kHz to 10 kHz, sine waves)
Crest factor: 2 (sine waves, the peak voltage is up to 1000 V)
RMS measurement
response time
Fast: 150 ms (rising from 0% f.s. to 90% f.s.)
Normal: 500 ms (rising from 0% f.s. to 90% f.s.)
Slow: 2.5 s (rising from 0% f.s. to 90% f.s.)
Temperature
characteristic
±0.05% f.s./°C
Frequency
characteristic
DC to 100 kHz −3 dB
Noise 30 mV p-p (typ.), 50 mV p-p (max.) (highest sensitivity range, with input shorted)
Common mode
rejection ratio
80 dB or more (50 Hz/60 Hz input shorted)
Low-pass filter OFF, 5±50%, 50±50%, 500±50%, 5 k±50%, 50 k±50% (Hz) -3 dB
Input type Unbalanced input (floating)
Input coupling
DC/GND
Input resistance 4 M
Ω
±1%
Input capacitance 5 pF or less (at 100 kHz)
A/D resolution 16 bits
Maximum sampling
rate
1 MS/s
Input terminals Banana jacks
Maximum input
voltage
1000 V DC, 700 V AC
Maximum rated
voltage to earth
1000 V AC/DC measurement category III, 600 V AC/DC measurement category IV
(between each input channel and chassis, between input channels)
Anticipated transient overvoltage: 8000 V
Operating
temperature and
humidity
As per Memory HiCorder in which Model U8974 is installed
Operating
environment
As per Memory HiCorder in which Model U8974 is installed
Specifications
18