Yokogawa µR20000 Manual de usuario descargar pdf (Pagina 22)

3-9SM 04P01B01-01E

Testing

Withstand Voltage

● Procedures

Perform the test with a withstanding voltage tester, and check whether the results

meet the criteria. Perform the measurement with the power switch turned ON.

Test Duration

The test duration is one minute.

Criteria

Tested Terminals Applied Voltage Max Allowable Condition

Leak Current

Between the power and 1.5 kVAC 5 mA Short the L and N terminals.

earth terminals

Between the input and 1.0 kVAC 1 mA Short all input terminals.

earth terminals

Between input terminals 1.0 kVAC 1 mA Short the odd and even

channels of the +/A, −/B,

and b* terminals, and

measure between odd

and even channels.

Between the relay contact 1.5 kVAC 1 mA With the /A1, /A2, /A3, or /F1

output terminals and option. Short all relay contact

earth terminals output terminals.

Between remote control 500 VDC 0.1 mA With the /R1 option.

input C terminal and

earth terminals

* With the dot model without the /N2 option, exclude the b terminal. The b terminals are

connected to all channels.

Measurement Accuracy

● Overview

Tests the measuring accuracy of the recorder. The measurement accuracy test is

performed in one of the following ways.

• One representative channel

for each A/D converter is tested, and the channel-to-

channel error between the representative channel and other channels is tested

(see next item).

* The pen model uses one A/D converter (A/D 1) for both channels 1 and 2, and another (A/

D 2) for both channels 3 and 4. Choose channel 1 or 2 to test A/D 1, and channel 3 or 4

to test A/D 2.

The dot model uses a single A/D converter for channels 1 through 6. Choose any one of

channels 1 through 6 to test the A/D converter.

• The measuring accuracy of all channels is tested separately.

● Test Instruments

Instrument Specifications

DC voltage generator Accuracy: ±0.01% of setting or better

DMM Accuracy: ±0.01% of rdg or better

Variable resistors Accuracy: 0.01% + 2 mΩ or better

● Recorder Settings

Set the input range of the channels under test to the test range.

3.4 Test Procedures

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