ATV71HD90N4 Category: Variable Frequency Drive (VFD)
Series: Altivar 71 (Schneider Electric) Key Specifications: • Power Rating: 90kW (120HP) • Voltage: 380-480V AC, 3-phase • Output Current: 170A • Enclosure: IP20 (N4 suffix) Main Features: • Advanced motor control (flux vector & V/F modes) • Built-in braking transistor • Embedded Modbus & optional fieldbus cards • Dynamic braking capability Typical Applications: • Heavy-duty pumps & fans • Industrial conveyors • High-power motor control Standards Compliance:
IEC 61800, UL 508

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Technical Parameters Category Parameter Specification / Description General Model 98L-48.MR95HT Actuator Type Double-Acting Piston Positioner MR95HT Multi-Spring, High-Thrust Positioner Actuator Performance Piston Diameter The "48" likely indicates a 48 square inch effective piston area. Stroke Length Long stroke, specific length defined by the "L" in 98L (e.g., 8 inches or more). Thrust Output Extremely High. With a 48 in² piston at 100 psig air supply, theoretical thrust is 4,800 lbs. Actual thrust depends on friction and positioner capability. Air Supply Pressure Typically up to 100-150 psig (6.9-10.3 bar) for the actuator. Positioner (MR95HT) Input Signal 3 to 15 psi (0.2 to 1.0 bar) pneumatic Supply Pressure Up to 150 psig (10.3 bar) Output Capacity Very High. Designed to provide large volumes of air to quickly fill and exhaust the large piston chamber. Characterization Linear, Equal Percentage, Quick Open (via characterized cams). Environmental & Physical Ambient Temperature Standard: -20°F to 150°F (-29°C to 66°C) Enclosure Rating Weatherproof and/or Explosion-Proof (depending on ordered configuration). Materials Cast iron or ductile iron construction.