Description

Used product. The OMRON KP100L-OD-EU is a three-phase grid-connected photovoltaic inverter designed to convert DC electrical energy from photovoltaic modules into AC power for feeding into the electrical grid.
The original nameplate visible in the photographs clearly identifies model KP100L-OD-EU and indicates 850 VDC maximum input voltage, 200–850 VDC input range, 585 VDC nominal voltage, 230 VAC grid voltage, 50 Hz, 10,000 W rated AC power, and IP65 protection rating. The nameplate also carries the CE marking, VDE0126-1-1 reference for grid monitoring, and Made in Japan marking.
OMRON technical documentation confirms a configuration with 3 independent MPPT trackers, 10.3 kW nominal DC power, 11.5 kW maximum DC power, 850 V maximum DC voltage, three-phase 230/400 VAC output, 14.5 A rated current, and maximum efficiency of 97.5%.
The photographed unit features its original metal enclosure, front LCD display, control buttons, RUN/ERR indicators, DC connections, and lower-side cable glands. Normal cosmetic and handling marks consistent with a used industrial device are present.

⚙️ Technical Specifications

• Manufacturer: OMRON Corporation
• Model: KP100L-OD-EU
• Type: Three-phase grid-connected photovoltaic inverter
• Rated AC power: 10,000 W
• Nominal DC power: 10,300 W
• Maximum DC power: 11,500 W
• Maximum DC voltage: 850 VDC
• DC input range: 200–850 VDC
• MPPT operating range: 225–850 VDC
• Nominal DC voltage: 585 VDC
• Number of MPPT trackers: 3
• Maximum current per MPPT: 13 A
• Maximum power per input/MPPT: 5,500 W
• Maximum total DC current: 33 A
• DC connectors: MC4
• Rated AC power: 10,000 W
• Peak power: 11,000 W for up to 10 minutes
• Rated output current: 14.5 A
• Output voltage: 230/400 VAC
• Rated frequency: 50 Hz
• Frequency range: 45–55 Hz
• Grid system: Three-phase, 4-wire
• Output current THD: ≤4%
• Power factor: approximately 1 under typical conditions
• Maximum efficiency: 97.5%
• European efficiency: 97.1%
• Standby/night consumption: approximately 1 W or less
• Protection rating: IP65
• Cooling: Forced ventilation
• Display: LCD
• Communication: RS-485 / RS-232C
• Manufacturing: Made in Japan

The specifications above are consistent with the OMRON technical documentation supplied for the KP100L-OD-EU.

🔧 Operation and Features

The KP100L uses three independent MPPT trackers, allowing PV strings with different electrical characteristics or exposure conditions to be connected separately. Each MPPT has its own DC/DC conversion stage, after which the energy is transferred to the DC bus and converted through the DC/AC stage for three-phase grid connection.
The inverter also incorporates:

• AICOT™ anti-islanding control
• Grid monitoring
• Ground-fault monitoring
• DC and AC overvoltage protection
• Varistors and surge protection devices
• Two independent switching devices on the grid side
• LCD diagnostic display
• RS-485 / RS-232C communication
• Forced ventilation

The IP65 enclosure and forced-cooling system allow the unit to be used in technical outdoor installations, subject to the environmental conditions specified by the manufacturer.

⚠️ Possible Errors and Operating Anomalies

The KP100L includes an internal error memory capable of storing up to 50 events, accessible through the display. The OMRON manual provides a specific list of diagnostic codes for this product family.

AC Grid-Side Errors

• E1-0 – No Utility: the inverter does not correctly detect the AC grid.
• E1-1 – Grid OV: excessive grid voltage.
• E1-2 – Grid UV: insufficient grid voltage.
• E1-3 – Grid OF: grid frequency above the permitted limit.
• E1-4 – Grid UF: grid frequency below the permitted limit.
• E1-5 – Islanding Passive: possible passive islanding condition detected.
• E1-6 – Islanding Active: possible active islanding condition detected.
• E1-7 – Instantaneous Overvoltage: transient grid-voltage anomaly.
• E1-8 – Instantaneous Undervoltage: instantaneous drop in grid voltage.

PV DC-Side Errors

• E2-1 – DCOverVolt: excessive DC-side voltage.
• E2-3 – Ground I Fault: abnormal current to ground.
• E2-4 – RISO Fault: insufficient insulation resistance in the photovoltaic system.
• E3-1 – OverDcCurr: excessive DC-side current.
• E3-2 – OverAcCurr: excessive AC-side current.
• E3-3 – InvFail DcINJ: abnormal DC-current injection into the grid.
• E3-4 – Overtemperature: excessive internal temperature.

Internal Inverter Anomalies

The diagnostic system also monitors:

• E4-1: CPU measurement comparison anomaly
• Power-supply measurement comparison anomalies
• Grid-frequency measurement circuit anomalies
• Grid-voltage measurement anomalies
• DC-voltage measurement anomalies
• E4-2 – Efficiency Fail: efficiency-related fault
• E4-3 – InvFail CntrCur: AC output-current anomaly
• E4-4 – ROMver fault: ROM version anomaly
• E4-5 – PS fault: power-supply fault
• E4-6 – EepromSumFailure: EEPROM checksum error
• E4-7 – EepromFailure: EEPROM error
• E5-1: grid relay error
• Additional communication anomalies between CPUs and internal circuits

These diagnostic codes are particularly relevant when evaluating a used inverter, as they can help distinguish problems originating from the electrical grid or PV strings from possible internal inverter faults.

🏭 Construction, Installation and Environmental Conditions

The photographed unit features a large metal enclosure, removable panels, and connections concentrated on the lower section.
OMRON documentation specifies:

• Dimensions: approximately 455 × 740 × 270 mm
• Weight: approximately 42 kg
• Operating temperature: −20 °C to +60 °C
• Continuous operation at rated power: −20 °C to +40 °C
• Relative humidity: 4–100%, non-condensing
• Climatic class: 4K4H
• Enclosure protection: IP65
• Cooling: Forced ventilation

The heatsink and air inlets must be kept unobstructed. OMRON also specifies particular precautions concerning ventilation and access to energized components.

🛡️ Safety and Product Condition

The KP100L can operate with photovoltaic voltages up to 850 VDC and a three-phase grid connection. Installation, testing and servicing must therefore be carried out exclusively by qualified personnel.
The OMRON manual specifies that the cover must not be opened while the unit is energized, that MC connectors must not be touched while under voltage, and that the prescribed shutdown and isolation procedures must be followed before servicing.
The photographed unit is used and shows normal cosmetic marks on the metal enclosure. The photographs demonstrate the external condition of the equipment but do not constitute proof of electrical operation.
Before recommissioning, the following checks are recommended:

• Visual inspection of the internal and external condition
• Inspection of the MC4 connectors
• Inspection and testing of the cooling fans
• DC insulation-resistance test
• Verification of the three MPPT sections
• DC voltage verification
• Three-phase grid verification
• Synchronization test
• AC output test
• Error-memory inspection
• LCD display and control-button test

📦 Package Contents

1 × OMRON KP100L-OD-EU – 10 kW Three-Phase Photovoltaic Inverter
The unit is supplied in its original enclosure, with LCD display and control panel, DC connections and cable glands visible in the photographs.
Any manuals, mounting brackets, cables or accessories not clearly visible in the photographs are not included.

🚀 Final Description

The OMRON KP100L-OD-EU is a professional 10 kW three-phase photovoltaic inverter featuring 3 independent MPPT trackers, up to 850 VDC input voltage, 585 VDC nominal DC voltage, 230/400 VAC output, maximum efficiency of 97.5%, and IP65 protection.
Its combination of multiple MPPT trackers, DC/AC protection, anti-islanding control, LCD diagnostics, error memory and RS-485/RS-232C communication makes this equipment particularly suitable for maintenance, replacement and recovery of existing photovoltaic installations, subject to compatibility and electrical testing.
Used product with normal signs of use. Operation must be verified by appropriate electrical testing before recommissioning.