📝 Description

Used product. OKY A1RA700-KK EMI/EMC filter, designed to filter electromagnetic interference on high-voltage, high-current DC power lines. The unit is identified on the nameplate as EMI/EMC FILTER A1RA700-KK, with PV side input and INV side output, indicating its use between the photovoltaic field and the DC input of a power inverter.

⚙️ Technical Specifications

• Brand: OKY
• Model: A1RA700-KK
• Type: EMI/EMC filter for direct current
• Rated voltage: 1000 VDC
• Rated current: 700 A
• Configuration: 2-pole DC (+ / −)
• PV side: P1 / N1
• Inverter side: P2 / N2
• Test voltage: 3000 VDC for 1 minute
• Environmental category: 25/85/21
• Construction: shielded metal housing
• Origin: Made in Korea
• Visible code: 1009018
  The P1/N1 → P2/N2 marking clearly identifies the two positive and negative DC conductors passing through the filter. The T.V. 3000Vdc 1min marking indicates the dielectric test voltage specified by the manufacturer.

⚡ Function in the Electrical System

High-power DC photovoltaic system / DC input of a central inverter. The filter is installed on the DC line between the photovoltaic field (PV) and the inverter (INV) to attenuate conducted electromagnetic interference generated or propagated along the power cables. The 1000 VDC / 700 A configuration is intended for high-power photovoltaic systems, central inverters or high-current industrial DC applications.

🏭 Construction and Installation

The component is housed in a large metal enclosure, which also contributes to electromagnetic shielding. Side mounting brackets and power terminals are present on the sides of the filter. The housing shows signs of use, scratches and surface finish alterations, consistent with a component recovered from an installation.
The 700 A rated current requires installation with appropriately sized cables, busbars, tightening, protection and heat dissipation systems. The filter must be used exclusively within the electrical limits indicated on the nameplate.

🛡️ Safety and Product Condition

Used product. The component is intended for circuits up to 1000 VDC and 700 A and must therefore be considered a device for high voltage and extremely high current. Before commissioning, insulation, connection continuity, terminal condition and filter integrity must be verified.
Electrical operation is not declared unless the component has undergone specific testing. Insulation testing and verification of EMC attenuation must be carried out using equipment and procedures appropriate to the component's voltage level.

📦 Package Contents

• 1 × OKY A1RA700-KK EMI/EMC filter
• Metal housing with mounting brackets
• PV side and INV side terminals as shown in the photographs

🚀 Final Description

OKY A1RA700-KK is a high-power 1000 VDC / 700 A EMI/EMC DC filter, with a two-pole configuration and separate PV → INV connections. It is a component intended for high-power photovoltaic systems and industrial DC applications where conducted interference between the DC source and inverter needs to be reduced. The nameplate also specifies a 3000 VDC test voltage for 1 minute and environmental classification 25/85/21.