Description
GENERAL
Marathon Harsh Duty Alternator — Model 362PDL3126:
Looking for an industrial-grade alternator that won’t quit in dust, moisture, or salt-laden environments? The Marathon Harsh Duty series (Model 362PDL3126, 362-frame) is engineered for maximum uptime in the toughest applications—quarries, barges, refineries, offshore platforms, and more.
Why the 362PDL3126 stands out:
- Harsh-Duty Exciter Construction: Coils are toroidally wrapped in fiberglass tape, fully encapsulated, submerged in 100% solids varnish, and finished with a two-component anti-tracking topcoat for superior protection in dust-laden industrial settings.
- Reinforced Main Stator Windings: Multiple dip-and-bake cycles with 100% solids varnish plus anti-tracking topcoat extend service life in wet, dirty, or coastal air streams.
- Wet-Wound Rotor: Single-piece laminations and wet-layer winding deliver exceptionally reliable rotor construction for mission-critical uptime.
- Heavy-Duty Rectifier Assembly: Built to handle extreme transient surges and over-current events; diodes are hermetically sealed and rated to 300% beyond worst-case design requirements.
- Selenium Surge Suppressors (Std on 360-Frame+): Robust, self-healing suppressors with heat-sink capacity—up to 40× the power handling of typical MOVs—to better protect diodes during severe loading conditions (the 362 frame qualifies).
- Optional PMG Excitation: Pair with the proven DVR2400 (digital) or PM500 (analog) regulators for ±0.25% voltage regulation, strong motor starting, and up to 300% short-circuit support—ideal when stable voltage is non-negotiable.
- Global Technical Support: Backed by experienced engineering teams for spec reviews, custom designs, and application guidance.
Ideal environments & use cases:
Quarry and aggregate pits, mining, heavy industrial plants, chemical plants, oil & gas fields, refineries, irrigation/agriculture, construction rental fleets, motion-picture lighting, barges, and any installation within ~50 miles of coastline.
High-level specifications (series features):
- Frame size: 362
- Excitation: Brushless; PMG support available (DVR or PM500) with ~0.25% regulation and 300% short-circuit support.
- Surge protection: Selenium suppressors standard on 360-frame and larger.
- Environmental hardening: Fiberglass-wrapped exciter coils; multiple dip-and-bake stator cycles; anti-tracking topcoat across windings.
(Note: Detailed electrical ratings for 362PDL3126 depend on prime mover speed, voltage, and regulator selection. Contact us for a matched spec sheet.)
Power Ratings:
Continuous 3 Phase, 60hz, 1800 RPM, 4poles:
| 240 or 480v | 208v or 416v | 240v or 440v |
| 105 kw | 100 kw | 105 kw |
Standby 3 Phase, 60hz, 1800 RPM, 4poles:
| 240 or 480v | 208v or 416v | 240v or 440v |
| 113 kw | 105 kw | 113 kw |
