3300/12

Overview

• Model: 3300/12
• Type: AC Power Supply
• Manufacturer: Bently Nevada

Specifications

Inputs

• Power:
  • 95 to 125 Vac, single-phase, 50 to 60 Hz, at 1.0 A maximum.
  • 190 to 250 Vac, single-phase, 50 to 60 Hz, at 0.5 A maximum.
  • Field changeable via soldered jumper and replacement of external fuse.
• Primary Power Surge at Powerup:
  • 26 A peak, or 12 A RMS, for one cycle.
• Fuse Rating:
  • 95 to 125 Vac: 1.5 A slow blow.
  • 190 to 250 Vac: 0.75 A slow blow.

Outputs

• Transducer Power (Internal to Rack):
  • User-programmable -24 Vdc, +0%, -2.5% or -18 Vdc, +1%, -2%.
  • Overload protected per channel on individual monitor circuit boards.
• OK Relay:
  • Location: Behind the Power Supply, at the Power Supply Input Module.
  • Type: Single-pole, double-throw (SPDT).

Environmental Conditions

• Sealing: Hermetically-sealed.
• Contact Ratings (Resistive Load):
  • 5 A at 28 Vdc; 5 A at 120 Vac, 50/60 Hz; 3 A at 220 Vac, 50/60 Hz.
  • Ratings for systems requiring agency approval: 5 A at 28 Vdc; 5 A at 120 Vac, 50/60 Hz (30 Vac for ATEX).
• Contact Life: 10,000 cycles minimum at rated load.
• Operation: Normally energized.

Environmental Limits

• Operating Temperature: 0°C to +65°C (+32°F to +150°F).
• Storage Temperature: -40°C to +85°C (-40°F to +185°F).
• Relative Humidity: Up to 95%, non-condensing.

Field wiring diagram

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