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ASX-300 24V/25A Tri-Certified Flameproof Alternator

SKU ASX-300

The ASX-300 24VDC/25Amp Flameproof Alternator is an externally excited alternator designed for use in belt driven, diesel engine applications. The ASX-300 is tri-certified for use in hazardous areas classified as ATEX/IECEx Zones 1 or 2, NEC 500 Division 2 and NEC 505 Zone 2. It is suitable for ambient temperature range -30°C to +55°C.

Features and Benefits

  • Compact high performance design
  • Certified for hazardous areas classified as ATEX/IECEx Zones 1 or 2, NEC 500 Division 2 and NEC 505 Zone 2
  • Speed signal output for overspeed shutdown
  • Side (ASX-300) and rear (ASX-301) cable entry options
  • Certified cable gland included
  • Wide choice of optional pulleys
  • Suitable for offshore conditions
$0.00
Specifications
Housing: Cast aluminum
Hazardous area rating: ATEX/IECEx
Zone 1, Group IIB
Zone 2, Group IIIC

NEC 500
Class I, Division 2, Groups C&D
Class II, Division 2, Groups F&G
Class III, Division 2

NEC 505
Class I, Zone 2, Groups IIB & IIA
EMC: MIL Standard 461E Clauses RE102 and RS 103
Alternator output: 28 VDC / 25 Amps Maximum
Ambient temperature: -30°C to 55°C -22°F to 131°F
Maximum operating RPM: 8,000 rpm
Power cable entry: Side w/ gland (ASX-300) Rear w/ gland (ASX-301)

A wide range of pulleys are available for the ASX-300 alternator.  Some models are listed below.  For sizing instructions please refer to the ASX-300 data sheet.

Pulley
Model No.

General Form

Belt Width

Drive Diameter (mm)

ASX-546

SPA (Small)

1/2” / 13mm

55

ASX-549

SPA (Medium)

1/2” / 13mm

71

ASX-574

SPA (Large)

1/2” / 13mm

80

ASX-539

SPB (Small)

5/8” / 16mm

66

ASX-548

SPB (Medium)

5/8” / 16mm

71

ASX-563

SPB (Large)

5/8” / 16mm

90

ASX-575

6 Groove Poly-V

DIN 6-PK

56

ASX-556

6 Groove Poly-V

DIN 6-PK

66

Applications

Designed as belt driven diesel engine mounted alternator for use in hazardous areas classified as ATEX/IECEx Zones 1 or 2, NEC 500 Division 2 and NEC 505 Zone 2. Suitable for a local ambient temperature range between -30°C and +55°C. Speed signal output available. Power output suitable for changing a medium sized diesel engine start battery, subject to the following limitation:

  • The output demand not to exceed 25 amps
  • This equipment must not be used for other applications without prior approval of Chalwyn.
Operation

The ASX-300 Flameproof Alternator is designed to be a direct replacement for non-flameproof alternators used on diesel engines. Some adjustments to mounting brackets and belt tensioning link may be necessary.  The alternator rear cover can be rotated to provide alternate cable entry positions.

In the case of fixed speed applications the pulley drive should be arranged to give a continuous alternator speed of between 5,000 rpm and 7,000 rpm. In the case of variable speed applications the pulley ratio should be selected to give an alternator speed of 2,000 to 2,500 rpm at the engine low idle. This typically equates to a normal operating alternator speed range of about 3,500 rpm to 8,000 rpm.

The maximum output demand for the ASX-300 alternator should not exceed 25 amps.