50kVA KOFO Diesel Generator Set With MN4105ZDS Engine ZA-40-4 Alternator

50kVA Silent KOFO Diesel Generator Set with MN4105ZDS Engine & ZA-40-4 Alternator

The 50kVA silent KOFO diesel generator set is a low-noise power solution built for environments where quiet operation matters — hospitals, hotels, schools, residential communities, and urban commercial buildings. Powered by the KOFO MN4105ZDS 4-cylinder water-cooled diesel engine and paired with a ZTA ZA-40-4 brushless alternator, this enclosed genset delivers 40kW prime / 50kVA output at 1500 rpm, 50Hz, 3-phase 400V, all housed in a weatherproof soundproof canopy rated at ≤80 dB(A) at 7 meters.

Engine: KOFO MN4105ZDS

The MN4105ZDS is a proven, easy-to-service 4-cylinder, 4-stroke, water-cooled diesel engine. Its simple mechanical design, low parts cost, and wide service network make it a favorite for operators who value uptime over complexity. Rated at 1500 rpm for 50Hz operation, it offers stable load acceptance and low fuel consumption — roughly 12.5 L/h at full prime load.

Alternator: ZA-40-4 Brushless

The ZA-40-4 is a 4-pole, 3-phase brushless alternator with 100% copper windings and an AVR for tight voltage regulation (±1%). Brushless construction means no carbon brushes to wear, less maintenance, and cleaner power for sensitive loads. It matches the 50kVA / 40kW rating with class H insulation and IP23 protection.

Silent Canopy & Noise Control

The enclosed design uses a galvanized steel canopy with fire-retardant acoustic foam and an integrated exhaust silencer, cutting operational noise to ≤75 dB(A) at 7m — quiet enough for nighttime backup in noise-sensitive areas. The canopy is weatherproof (IP44), lockable, and fitted with a critical-grade muffler, emergency stop, and vibration-isolated base frame.

Key Technical Specifications

• Prime Power: 50kVA / 40kW | Standby: 55kVA / 44kW

• Frequency / Voltage: 50Hz / 400V 3-phase (230V single-phase tap available)

• Engine: KOFO MN4105ZDS, 4-cyl, water-cooled, 1500 rpm

• Alternator: ZA-40-4, brushless, AVR, IP23, class H

• Noise Level: ≤75 dB(A) at 7m (enclosed)

• Fuel Tank: 100L (≈8h runtime at 75% load)

• Controller: DSE / SmartGen LCD (auto start, AMF optional)

• Dimensions (canopy): ≈2300×1000×1350 mm | Weight: ≈1150 kg

Built for Easy Maintenance

The canopy features side access doors and a removable roof panel for fast service of filters, belts, AVR, and batteries with standard tools. We supply a wiring diagram, operation manual, and a spare-parts list with every unit, so your local technician is never guessing.

Typical Applications

This 50kVA silent diesel genset is ideal for hospitals, hotels, schools, data rooms, retail stores, and residential backup where low noise is a requirement. As a standby unit it automatically takes over when mains fails; the quiet canopy keeps it compliant with daytime and nighttime noise limits.

Why Buy from ZTA Power

ZTA Power has supplied diesel generator sets to global distributors and projects across Africa, the Middle East, and Southeast Asia for over a decade. Every set is load-tested — including a noise-level check — before shipment, packed for container export, and backed by a 12-month or 1000-hour warranty with remote technical support. Our engineering team helps you size, install, and commission — not just sell.

FAQ

Q: How quiet is the silent version compared to the open type?

A: The enclosed canopy reduces noise to ≤75 dB(A) at 7m, versus roughly 95–100 dB(A) for an open set — suitable for residential and commercial zones.

Q: Can I upgrade the controller for automatic mains failure (AMF) start?

A: Yes. Standard DeepSea DSE6120 or SmartGen HGM6110 with auto start; AMF and remote monitoring are available options.

Q: Is the canopy weatherproof for outdoor installation?

A: Yes. The galvanized, IP44-rated canopy is built for outdoor use; a concrete base and adequate ventilation are recommended at install.