Test Running; Checking Dc Voltage From Pv Array; Checking Ac Voltage From Grid - Sharp JH-3500U Installation & Operator's Manual

CAUTION
Confirm the following before testing
• All terminals are securely connected.
• All wires are connected.
• The exposed conductors have no short circuits.
• All the cables are joined and fixed in place with the cable ties.
• All the conduit hubs are tightened.
Checking DC Voltage from PV String
Checking must be performed on a sunny day.
1. If the PV modules are covered with sheets, remove them.
2. Remove the GFDI fuse.
3. Turn on the DC disconnect switch.
4. Set the positive probe of the multimeter to the positive terminal of a DC terminal block, and the
negative probe to the negative terminal of the same terminal block. The multimeter
voltage range should be set over 400V DC.
5. Confirm that the reading of the multimeter is more than DC140V .
6. Check the voltage and the polarity at all the DC terminal blocks in the same way.

Checking AC Voltage from Grid

1. Turn on the dedicated breaker for the solar power conditioner on the AC load center.
2. Check the voltage of the terminal at the AC disconnect. The value should be approx. 240 V, 60Hz.
If not, check whether the connection is correct.
3. Turn on the AC disconnect switch.
4. Check the voltage between L1 and L2 terminals in the AC terminal block. The reading of the
multimeter should be approx. 240 V, 60Hz. If not, check whether the connection is correct again.
5. Check the voltage between L1 and GND in the AC terminal block. And check the voltage between
L2 and GND in the AC terminal block. The reading of the multimeter should be approx. 120V 60Hz.
If not, check whether the connection is correct again.

Test Running

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