400KW / 500kVA Mobile Trailer Diesel Generator
Highway-Ready Mobility | Engine: WP12ZLD | SKU: YMDL-400GF-TRAILER
- Half-Copper Brushed Alternator
- Industrial Diagnostics Controller
- Heavy-duty Trailer Chassis, IP44
- Base Fuel Tank, ≥8h Runtime at Full Load
- Full Auto System (ATS) — Standard
Build Your Own Configuration
Custom builds are quoted individually via WhatsApp — pricing shown below for full transparency.
Engineering Data & Specifications
| Metric | Performance Values |
|---|---|
| System SKU | YMDL-400GF-TRAILER |
| Rated Power (Standby) | 400 kW / 500 kVA |
| Rated Power (Prime) | 360 kW / 450 kVA |
| Rated Voltage | 400V / 230V (3-Phase 4-Wire) |
| Rated Frequency | 50 Hz |
| Power Factor | 0.8 (Lagging) |
| Engine Model | WP12ZLD (Weifang) |
| Engine Type | 4-Stroke, Water-Cooled, In-line 4-Cylinder |
| Displacement | 4.15 L |
| Rated Engine Speed | 1500 RPM |
| Alternator | Half-Copper Brushed (Default) |
| Controller | Industrial Diagnostics System (Default) |
| Frame Construction | Heavy-duty trailer chassis |
| IP Rating | IP44 (Requires indoor/sheltered installation) |
| Fuel Tank Capacity | Base tank for ≥ 8 hours at full load |
| Dry Weight | 3860 kg |
| Dimensions (L × W × H) | 3850 × 1800 × 2610 mm |
| Starting System | Electric Start (12V / 24V) |
| Cooling System | Water-Cooled with Radiator |
| Certification | Conforms to ISO 8528 Design Standard / CE |
Digital Overwatch — 4-Point Engine Protection
At 400kW, a missed fault signal means costly downtime or permanent engine damage. The WP12ZLD's onboard controller monitors four critical parameters simultaneously and shuts down the unit before damage occurs — no operator intervention required.
Why it matters: A sudden drop in oil pressure or a spike in coolant temperature often goes unnoticed until it's too late. This module acts as an automated on-site mechanic — always watching, always ready to intervene.
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Low Oil Pressure ShutdownDetects pressure drops below safe threshold and cuts the engine immediately to prevent bearing seizure.
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High Temperature ShutdownMonitors coolant temperature in real time and shuts down the unit if the radiator is overwhelmed.
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Over-Speed ProtectionLocks engine speed to 1500 RPM and triggers emergency shutdown if runaway conditions are detected.
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Over-Voltage / Short CircuitIsolates the alternator from downstream load faults before current spikes can damage the windings.
500kVA Trailer Generator — Key Highlights
Highway-Ready Trailer Chassis
Mounted on a purpose-built heavy-duty trailer with a standard ring hitch, the unit tows at up to 40 km/h on paved roads. No crane, no concrete pad — reposition 3860 kg of generator capacity with a standard truck.
Weifang WP12ZLD Engine
4-stroke, water-cooled, in-line 4-cylinder engine with a 4.15 L displacement. Rated at 1500 RPM for 50 Hz output. The WP12ZLD is a proven workhorse across African and Middle Eastern markets known for long service intervals and widely available spare parts.
Standby & Prime Dual Rating
Rated at 400 kW / 500 kVA standby and 360 kW / 450 kVA prime. The prime rating reflects continuous 24/7 operation at sustained load — critical for quarry sites, mining camps, and construction projects where the generator is the sole power source.
IP44 Enclosure — Outdoor Capable
IP44 protection guards against solid particle ingress and water splashing from any direction. Suitable for open-air deployment on construction sites and quarries. A simple canopy or lean-to shelter extends service life further in heavy-rain environments.
≥ 8-Hour Runtime at Full Load
The base fuel tank is sized to deliver at least 8 continuous hours of operation at 100% load without refuelling. Extended tank options are available — contact us for overnight or 12-hour autonomy configurations.
Full Auto ATS — Standard on 200kW+
Automatic Transfer Switch (ATS) is included as standard equipment. It detects mains outages and transfers the full 500 kVA load in seconds — no manual intervention needed. Ideal for hospitals, data centres, and process facilities where downtime is not an option.
Heavy-Duty Stabiliser Jacks
Four corner stabiliser jacks level and lock the trailer on uneven ground, eliminating chassis flex that can skew oil pressure readings. Extend the jacks before start-up on any surface that is not paved or compacted gravel.
ISO 8528 & CE Certified
Manufactured to ISO 8528 performance standards and carries CE marking for European and international tender compliance. Documentation package — test reports, declaration of conformity, and engine certificates — supplied with every unit.
Physical Dimensions & Weight
Frequently Asked Questions
What is the difference between the standby rating and the prime rating?
What is the maximum towing speed for the trailer?
Is this unit suitable for outdoor installation?
How long will the generator run on a full tank?
Does it come with an Automatic Transfer Switch (ATS)?
What alternator options are available, and which should I choose?
What certifications does the unit carry?
What voltage and frequency outputs are available?
What engine protection systems are built in?
Are wholesale pricing and OEM configurations available?
Ready to Order or Need a Custom Quote?
Contact our team for bulk pricing, upgrade configurations, shipping estimates, and OEM options.