Description

Used product. Schaffner FS21884-250-99-1 EMC/RFI filter, designed for high-power photovoltaic applications and installed between PV-Field and Inverter. The component attenuates conducted electromagnetic interference present on DC lines, contributing to the electromagnetic compatibility of the system.
The photographed model is precisely identified as FS21884-250-99-1; the associated Schaffner material code is 810693.

⚙️ Technical Specifications

• Brand: Schaffner
• Model: FS21884-250-99-1
• Type: DC EMC/RFI filter
• Maximum voltage: 900 VDC
• Rated current: 250 A @ 55°C
• Climatic category: 25/100/21
• Application: PV-Field / Inverter
• Connections: + / − / PE
• Connection: copper busbar
• Enclosure: metal
• Made in Hungary
• Material code: 810693

⚡ Function in the Photovoltaic System

The filter is installed on the DC line between the photovoltaic field and the inverter, strictly respecting the polarity indicated on the enclosure.
Its function is the reduction of EMC/RFI interference generated by power electronic stages and inverter switching, limiting its propagation toward the PV field.
The marking on the component clearly identifies:
PV-Field → photovoltaic field side
Inverter → inverter side
with + / − / PE connections.

🏭 Construction and Installation

The component features a robust metal enclosure and power connections using copper busbars, suitable for the rated current of 250 A.
The construction is intended for high-power industrial and photovoltaic applications. The FS21884 family includes filters specifically designed for DC connections between the photovoltaic field and inverter.

🌐 Applications

Suitable for:

• photovoltaic inverters
• industrial PV systems
• high-current DC lines
• EMC/RFI interference reduction
• replacement of equivalent Schaffner filters, subject to verification of electrical and mechanical compatibility.

🛡️ Safety and Product Condition

The filter is used and shows normal signs of previous installation, with slight abrasions and scratches on the metal enclosure and mounting components.
⚠️ 900 VDC and 250 A are extremely dangerous values. Before installation or maintenance, it is essential to completely disconnect the PV system, verify the absence of voltage, and follow the safety procedures required for high-voltage DC systems.

📦 Package Contents

• 1 × Schaffner FS21884-250-99-1
• complete filter with metal enclosure and connection busbars, as shown in the photographs.

🚀 Final Description

The Schaffner FS21884-250-99-1 is a high-power DC EMC/RFI filter, specifically designed for PV-Field/Inverter applications, with a rated capacity of 900 VDC and 250 A @55°C. Its construction with a metal enclosure and copper busbars makes it suitable for high-power industrial photovoltaic systems. The exact photographed code is FS21884-250-99-1, Schaffner material code 810693.