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Siemens 7XT3400-0BA00 20Hz Bandpass Filter for Stator Earth Fault Protection

Siemens 7XT3400-0BA00 20Hz bandpass filter for stator earth fault protection.

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ManufacturerSiemens

Part number7XT3400-0BA00

Frequency Approx. 20Hz

Internal Resistance (20Hz) Approx. 8 Ohm

Internal Resistance (50Hz) Approx. 160 Ohm

Internal Resistance (60Hz) Approx. 200 Ohm

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Filters 20Hz square wave to sine curve Protects frequency generator High resistance at rated frequency Surface mountable 7XP20 case

Product description

The Siemens 7XT3400-0BA00 is a 20Hz bandpass filter designed for stator earth fault 100% protection. It filters the square-wave voltage from the frequency generator, converting it into sine curves at approximately 20Hz, with an internal resistance of about 8 ohms at this frequency.

This filter also protects the 20Hz frequency generator from displacement voltage in case of earth faults. At rated frequencies (50Hz and 60Hz), its resistance increases significantly (160 ohms and 200 ohms, respectively). It operates within a 7XP20 case for surface mounting and has a maximum power consumption of approximately 80VA.

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Technical specifications

Frequency	Approx. 20Hz
Internal Resistance (20Hz)	Approx. 8 Ohm
Internal Resistance (50Hz)	Approx. 160 Ohm
Internal Resistance (60Hz)	Approx. 200 Ohm
Max. Power Consumption	Approx. 80VA
Case	7XP20
Mounting	Surface mounting

Common applications

Power generation

Stator earth fault protection

Generator protection

Electrical safety

Monitoring systems

Compatible systems

Siemens 7XT3300-0BA00 frequency generator and associated protection systems

Also known as

Siemens 7XT3400-0BA00 20Hz Filter Siemens Stator Earth Fault Bandpass

Replaces / compatible with

This bandpass filter is a complementary component to the Siemens 7XT3300-0BA00 20Hz frequency generator, used in 100% stator earth fault protection systems.

Technical note

Expert tip

The significant impedance change between 20Hz and the mains frequencies (50/60Hz) is key to its function in differentiating fault signals from normal operating conditions.

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Frequently asked questions

What is the resistance of the Siemens 7XT3400-0BA00 bandpass filter at 50Hz and 60Hz?

The Siemens 7XT3400-0BA00 bandpass filter has an internal resistance of approximately 160 ohms at 50Hz and 200 ohms at 60Hz. At its intended operating frequency of 20Hz, the resistance is about 8 ohms.