GW Instek SPD-3606 - Manual (Page 24)

PERFORMANCE VERIFICATION
47
Output Current verification
Check item • Minimum output Current accuracy
• Maximum output Current accuracy
• Current meter accuracy (Output On)
• Current meter accuracy (Output Off)
Connection
Digital Multimeter
SPD-3606
V
A
Verification step 1. Set the SPD panel according to the Default
setting list, page41.
2. Connect SPD Channel 1 and
Digital Multimeter Current
terminal.
CH1
0 60V , 3A
0 30V , 6A
3. Power up SPD and Digital Multimeter.
4. Turn up the SPD Voltage knob to
the maximum.
VOLTAGE
5. Turn On the SPD output. OUTPUT
ON / OFF
OUTPUT
ON / OFF
SPD-3606 User Manual
48
Minimum output
Current 6. Record the Multimeter reading as the Minimum
output Current. Here is the acceptance range.
Channel1/2 < 0A
7. Turn up the SPD Current knob to
the maximum. Switch the
Multimeter Current terminal to
high current range.
CURRENT
Maximum output
Current 8. Record the Multimeter reading as the Maximum
output Current. Here is the acceptance range.
Channel1/2 6.15A ~ 6.25A
Channel3 3.05A ~ 3.15A
Current meter
accuracy 9. Compare and record the difference between the
SPD Current meter and the Multimeter reading
as the Current meter accuracy (Out On).
Then turn the output Off,
and check the SPD
reading again (Out Off). OUTPUT
ON / OFF
OUTPUT
ON / OFF
Here is the acceptance range and example.
Channel1/2/3 difference < ±(0.5% of reading +
2 digits) of Multimeter
Example:
Multimeter (Out On) = 3.000A
Tolerance = ±(0.005*3 + 0.02) ≈ ±0.04A
Accepted SPD reading(Out On)= 2.96A~3.04A
Accepted SPD reading (Out Off)= 2.96A~3.04A
10. Connect the Multimeter to
SPD Channel2 and repeat step
4 to 9.
CH2
0 60V , 3A
0 30V , 6A