Description
Used product. The Schaffner FS21884-84-07-1 is a high-voltage DC EMC filter, specifically configured for connection between the PV field (PV-Field) and the inverter. The model is clearly identifiable from the nameplate as FS 21884-84-07-1, with production Made in Hungary. The exact code is also listed in Schaffner/TTI catalogs under article number 811025.
The nameplate shows 900 VDC and 84 A @ 55 °C. The PV-Field and Inverter connections are clearly indicated, both with + / − polarity and PE connection. The component is therefore intended for EMC filtering on the DC side of photovoltaic systems, before the inverter input.
⚙️ Technical Specifications
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Brand: Schaffner
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Model: FS21884-84-07-1
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Type: DC current EMC/RFI filter
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Application: photovoltaic / inverter
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Rated voltage: 900 VDC
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Rated current: 84 A @ 55 °C
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Input connection: PV-Field + / − / PE
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Output connection: Inverter + / − / PE
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Configuration: DC, positive and negative filtered
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Frequency: DC application
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Climate class indicated: 25/100/21
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Production: Made in Hungary
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Schaffner/TTI code: 811025
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Connections: cables and power terminals as visible in the photographs
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Enclosure: shielded metal housing
⚡ Function in the Electrical System
The FS21884-84-07-1 is installed on the DC side of a photovoltaic system, between the PV field and the inverter. Its function is to reduce conducted electromagnetic interference present on the DC lines, limiting the propagation of interference toward the inverter and contributing to compliance with EMC electromagnetic compatibility requirements.
The presence of the PV-Field and Inverter markings clearly identifies the correct functional direction of the component.
🏭 Construction & Installation
The filter is made with a robust metal housing and has separate connections for the PV-Field and Inverter sides. The +, −, and PE terminals are present.
The photographs also show connection cables with cable lugs, supplied together with the component. The structure is designed for installation in power conversion equipment or panels.
Correct connection of the positive, negative, and PE polarity is essential. The connections between the PV input and inverter output must not be reversed.
🌐 Applications
The Schaffner FS21884-84-07-1 is particularly suitable for:
- Photovoltaic inverters
- High-voltage PV systems
- DC panels for photovoltaic installations
- Energy conversion systems
- EMC filtering on the photovoltaic field → inverter connection
- Industrial applications with DC power supply up to 900 V
🛡️ Safety & Product Condition
The component is used, with normal signs of installation and handling on the metal housing. Connection cables and terminals are present as visible in the photographs. No major structural damage is evident.
Electrical operation is not declared without specific testing. Before use, it is advisable to verify insulation, PE continuity, polarity, cable and cable-lug integrity, and correct tightening of the connections.
⚠️ The device is intended for voltages up to 900 VDC: dangerous voltages may be present even when the system appears to be disconnected. Installation and testing must be carried out exclusively by qualified personnel, using appropriate isolation and safety procedures.
📦 Package Contents
1 × Schaffner FS21884-84-07-1, DC EMC filter for photovoltaic applications, complete with metal housing, wiring, and terminals shown in the photographs.
🚀 Final Description
The Schaffner FS21884-84-07-1 is a professional component for EMC filtering on the DC side of photovoltaic inverters, with a nominal rating of 900 VDC and 84 A @ 55 °C. Its dedicated PV-Field / Inverter configuration makes it particularly interesting as an original replacement for inverters and high-voltage photovoltaic systems. The exact code can still be found in Schaffner component databases, confirming its identification as a specific product from the manufacturer.
