DETUNED REACTOR LVR07500A40G SCHNEIDER

DETUNED REACTOR LVR07500A40G SCHNEIDER – Low-Voltage Power Quality & Anti-Harmonic Protection

The DETUNED REACTOR LVR07500A40G SCHNEIDER (from Schneider Electric’s PowerLogic / VarSet PFC range) is a heavy-duty, three-phase anti-harmonic detuned reactor designed to protect power factor correction (PFC) capacitors from harmonic resonance and thermal overload. In modern electrical networks dominated by non-linear loads—such as variable speed drives (VFDs), uninterruptible power supplies (UPS), and LED lighting—harmonics can distort line voltage and cause premature capacitor failure.

The DETUNED REACTOR LVR07500A40G SCHNEIDER is connected in series with PFC capacitor banks to form a tuned LC circuit. Tuned specifically to a $7\%$ relative impedance factor ( $190\text{ Hz}$ tuning frequency $3.8$ tuning order at $50\text{ Hz}$ ), it prevents harmful harmonic amplification and ensures long-term operational safety across commercial and industrial distribution networks.

As depicted in the product image, the reactor features vertical high-grade copper/aluminum windings mounted on a low-loss laminated steel core, fitted with labeled terminal pads (A-A1, B-B1, C-C1) and an integrated thermal protection microswitch.

Key Features of the DETUNED REACTOR LVR07500A40G SCHNEIDER

Effective Anti-Harmonic Attenuation: Designed with a $7\%$ detuning factor ( $190\text{ Hz}$ ) to shift the LC resonant frequency safely below the $5^{\text{th}}$ ( $250\text{ Hz}$ ) and $7^{\text{th}}$ ( $350\text{ Hz}$ ) dominant network harmonics.
High Thermal & Overload Endurance: Constructed with Class H electrical insulation, supporting continuous operation up to $1.2 \times I_n$ fundamental current and high harmonic current spectra ( $38.2\%$ on $5^{\text{th}}$ harmonic).
Integrated Thermal Microswitch Protection: Equipped with an internal thermal contact trigger ( $2\text{ A}$ / $250\text{V AC}$ ) that trips the main PFC contactor or triggers an alarm if internal winding temperatures exceed normal limits.
Low Loss Vertical Winding Design: High-efficiency core construction minimizes operational $I^2R$ power losses (maximum $320\text{ W}$ heat loss) while maximizing heat dissipation via natural or forced air convection.
Rugged Pad Terminals: Heavy-duty flat copper pad connectors allow secure bolt connections to power busbars or high-gauge cable lugs.

Common Applications and Industrial Usage

The robust construction and precise inductance value of the DETUNED REACTOR LVR07500A40G SCHNEIDER make it an essential component in heavy industrial power quality systems:

Automatic Capacitor Banks (PFC Panels): Installed inside low-voltage automatic power factor correction switchboards to safely deliver $50\text{ kvar}$ reactive power compensation.
Industrial Facilities with VFDs & Inverters: Protects electrical distribution transformers and power factor capacitors in manufacturing plants heavily equipped with motor drives.
Data Centers & Commercial Infrastructure: Stabilizes line voltage, reduces total harmonic distortion ( $THDi$ ), and prevents neutral current overload in IT facilities and office towers.

Technical Specifications

The core electrical, mechanical, and thermal specifications for the DETUNED REACTOR LVR07500A40G SCHNEIDER are detailed below:

Parameter Specification	Technical Details & Operational Values
Component Classification	Three-Phase Anti-Harmonic Detuned Reactor
Primary Target Keyword	DETUNED REACTOR LVR07500A40G SCHNEIDER
Manufacturer / Range	Schneider Electric / PowerLogic PFC Series
Rated Reactive Power Output	$50\text{ kvar}$ at $400\text{V AC}, 50\text{ Hz}$
Rated Operating Voltage ( $U_n$ )	$400\text{ V AC}\ (50\text{ Hz})$
Detuning Factor / Order	$7\%$ Relative Impedance / $190\text{ Hz}$ ( $3.8$ Tuning Order)
Nominal Inductance ( $L$ )	$0.75\text{ mH}\ (\pm 5\% \text{ tolerance})$
Fundamental Current Rating ( $I_1$ )	$72.2\text{ A}$ RMS
RMS Total Current Rating ( $I_{rms}$ )	$77.9\text{ A}$ RMS
Maximum Losses	$\le 320\text{ W}$ at full rated load
Insulation Class & Test	Class H ( $180^\circ\text{C}$ ) / Dielectric $4\text{ kV}$ ( $50\text{ Hz}, 1\text{ min}$ )
Terminal Connection Type	Heavy-Duty Flat Pad Terminals
Dimensions ( $H \times W \times D$ )	Approx. $270 \times 260 \times 200\text{ mm}$
Product Net Weight	Approx. $22.0\text{ kg}$
Operating Temperature / IP	$0^\circ\text{C to }+55^\circ\text{C}$ / IP00 Open Frame

Installation Guidelines and Best Practices

SAFETY NOTICE: Ensure the power factor correction panel is fully de-energized and capacitors are discharged prior to installation or maintenance.

Thermal Ventilation: Mount the DETUNED REACTOR LVR07500A40G SCHNEIDER in the lower section of PFC enclosures with forced fan convection to effectively exhaust internal heat.

Thermal Switch Wiring: Connect the internal thermal contact wire directly into the control circuit of the associated step contactor to disconnect the capacitor step during overheating conditions.

Terminal Torque: Tighten busbar connections securely to recommended torque specs to maintain low electrical contact resistance.

To review official international IEC manufacturing specifications for reactors used in power factor correction and harmonic filtering applications, consult the official IEC 60076-6 Power Transformers – Part 6: Reactors Standard Directory.

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DETUNED REACTOR LVR07500A40G SCHNEIDER