KEMOT URZ3420, URZ3434 Solar Inverter Owner’s Manual

Solar inverter
PROsolar-3500 – URZ3420
PROsolar-5000 – URZ3434
Owner’s manual

URZ3420, URZ3434 Solar Inverter

This instruction manual includes useful guidelines concerning use and maintenance of the device as well as important precautions and safety information on proper  installation and handling of this product. Please read this operation instruction carefully before use, and keep it for future reference.

SAFETY INSTRUCTIONS

• Product for indoor use only. This device is designed for household and office use. Do not use this device with specialized equipment or apparatuses (e.g. industrial, medical equipment).
• Do not disassemble nor repair this device yourself. High voltage might be still present on the inside elements of the device, even after it has been switched off.
• Do not use this device if it is not working properly. In such case, turn the device off immediately, disconnect it from power supply and from external battery.
• Any repair can be carried out in an authorized service point exclusively.
• In case of fire, use only dry powder extinguisher. Using water or other types of fire extinguishers can lead to electrocution.
• Position the device in a properly ventilated place with suitable temperature. Warning: do NOT cover cooling fan of the device; it may lead to overheat.
• Protect this device from water, humidity as well as sources of heat and direct sunlight.

Safety precautions

1. Make sure all the connections are executed in a proper manner. Reversed connection or high voltage will cause serious damage.
2. Do not overload device. When connected to refrigerators, fans etc., the loading capacity should not exceed the 30% of the rated power.
3. The device’s temperature may increase while in operation. It is a normal phenomenon. Make sure the device is placed in a well-ventilated position.
4. Keep away from flammable materials!
5. Make sure the device is properly grounded.

FEATURES

1.  Pure sine wave output
2. Wide compability (can be connected to various devices).
3. C.R.G.O toroidal transformer
4. Double CPU intelligent control
5. High performance
6. Efficient MPPT solar charging technology
7. Two working modes: AC/PV priority
8. Full range of automatic protections and alarms: overload, short circuit, overvoltage, under voltage, high temperature etc.

PRODUCT DESCRIPTION

URZ3420

1. Display
2. SOLAR: photovoltaic cells indicator
3. BATTERY: battery indicator
4. FAULT: abnormal indicator
5. On/off switch
NOTE: when connected to power mains 230 V, use this switch to turn
on/off output voltage.
6. Output sockets (German and French type)
7. Grounding
8. Outputs| 1. Display
2. SOLAR: photovoltaic cells indicator
3. BATTERY: battery indicator
4. FAULT: abnormal indicator
5. On/off switch
NOTE: when connected to power mains 230 V, use this switch to turn
on/off output voltage.
6. Output sockets (German and French type)
7. Grounding
8. Outputs
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Display

1. Power supply indicator
2. Battery mode
3. Unusual/improper operation
4. Overheat
5. Input voltage
6. Output voltage| 7. Overvoltage
8. Undervoltage
9. Frequency indicator
10. Load bar
11. Load indicator
12. Battery bar
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Front panel indicators

1. Green indicator: photovoltaic cells state constant light signals standard operation. Indicator off or flashing means improper operation.
2. Yellow indicator: battery state – constant light means standard operation. Indicator off or flashing means improper connection.
3. Red indicator: improper operation, faulty operation of the photovoltaic cell

INSTALLATION

Note: prior to mounting on a wall, pay special attention to selection of the proper screws and screw anchors.
Battery installation
Note: Before connecting the device to external battery, make sure the device is switched off, and the battery switch is in OFF position.
INSTALLATION AND CONNECTION

1. Before connecting to battery and photovoltaic cells, make sure the inverter is not connected to power supply mains.
2. Connect the battery. Pay special attention to correct voltage and proper polarization.
3. Connect photovoltaic cells (pay special attention to correct voltage and proper polarization).
4. Select priority mode: PV for photovoltaic power supply priority, AC for AC power supply priority.
5. Press and hold the on/off switch to switch on the device, and connect to AC power supply mains.
6. Set the SOLAR switch to ON, to enable charging from solar cells. Set the BATTERY switch to ON.
7. Connect the external devices (make sure the devices are turned off at that time).
   Turn on the external devices one by one.

ON/OFF

1. Make sure the battery has been connected properly (correct polarization, matching voltage).
2. Make sure the solar panel has been connected properly (correct polarization, matching voltage).
3. Press and hold the on/off switch for about 3 seconds; the inverter will turn on.
4. Set the BATTERY switch to ON. Set the solar switch to ON, the device will enable charging.
5. Connect to power supply mains.

AC priority (AC power supply priority)

1. Turn on: if the AC power supply is available, the inverter will begin work in AC power supply mode, and at the same time charge the battery as well. If the AC power  supply mains is abnormal or not available, press and hold the on/off button for about 3 seconds; the device will start and enter inverter mode. When AC power supply  mains recover, the device will automatically enter AC mode and start charging the battery.
2. Turn off: press and hold on/off button to turn off the inverter. The outputs will be cut off, the device will be charging battery and will not switch to inverter mode again.

PV priority (photovoltaic supply priority)
1. Rebooting – in case of solar energy power interruption:
• if the AC power supply mains is available, the external device will be supplied from the AC power supply mains
• when PV power supply recovers and AC power supply mains is available, if the battery level is high enough, the inverter will switch to battery mode (AC power supply  mains at standby);
• Once the PV energy is recovered, and the battery level is not high enough, solar panels will be only charging battery. In such case, press and hold on/off switch for about 3 seconds to supply external devices from PV energy.
2. Turn off: after turn off, the device will not switch to inverter mode.

WORKING PRINCIPLE
AC priority mode (AC power supply mains priority)

1. AC power supply mains is available: the external devices will be supplied from the AC power supply mains. Solar cells will be charging battery.
2. In case of AC power supply mains overrun of cut off: battery and solar cells will provide power to the external devices to ensure power supply continuity. If solar panels  energy is not sufficient or not available, external devices will be supplied with power only from the battery.

PV priority mode (photovoltaic supply priority):

1. During the day (with ample sunlight) and power supply mains is available: solar panels will provide power to loads, simultaneously charging the battery (power supply mains at standby).
2. During the evening (or when the sunshine is not available), when the power supply mains is available: system will provide power to loads from battery; discharge battery  until battery reaches low voltage protection level; then automatically enter AC power mode and charge the battery till set value (reserved a certain power in case of  emergency situation, but will not charge the battery fully). The battery will be fully charged by solar panels once the solar energy is recovered.

TURNING OFF STEPS

1. Turn off the loads one by one.
2. Press and hold the on/off button for about 3 seconds, the loads will be cut off.
3. Disconnect the AC power supply mains.
4. Set the solar switch to OFF.
5. Set the battery switch to OFF. Disconnect from the battery, if the device will not be used for a long time.

SPECIFICATION

130%-150% shutdown at 3 s
Short circuit| System automatically shuts down
Others| Ambient temperature| 0~40ºC
Ambient humidity| 10% ~ 90%
Noise| ≤ 50 dB

Correct Disposal of This Product (Waste Electrical & Electronic Equipment)

(Applicable in the European Union and other European countries with separate collection systems) This marking shown on the product or its literature, indicates that it  should not be disposed with other household wastes at the end of its working life. To prevent possible harm to the environment or human health from uncontrolled waste  disposal, please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources. Household users should contact  either the retailer where they purchased this product, or their local government office, for details of where and how they can take this item for environmentally safe recycling. Business users should contact their supplier and check the terms and conditions of the purchase contract. This product should not be mixed with other commercial wastes  for disposal. Made in China for Lechpol Electronics Leszek Sp.k., ul. Garwolińska 1, 08-400 Miętne.

  Notes

Documents / Resources

| KEMOT URZ3420, URZ3434 Solar Inverter [pdf] Owner's Manual
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