Bently Nevada 3300/12-01-20-00 AC Power Supply

Technical Specifications

Input Specifications

• Input Voltage Range: 95 to 125 Vac (single phase, 50-60 Hz) or 190 to 250 Vac (single phase, 50-60 Hz)
• Maximum Input Current: 1.0 A (for 95-125 Vac) or 0.5 A (for 190-250 Vac)
• Input Voltage Adjustment: Field-changeable via soldered jumper and external fuse replacement
• Primary Power Surge (Powerup): 26 A peak or 12 A rms for one cycle
• Fuse Rating: 1.5 A slow blow (95-125 Vac); 0.75 A slow blow (190-250 Vac)

Output Specifications

• Transducer Power (Internal to Rack): User-programmable to -24 Vdc (+0%, -2.5%) or -18 Vdc (+1%, -2%)
• Overload Protection: Transducer voltages are overload protected per channel on individual monitor circuit boards
• OK Relay: Single-pole, double-throw (SPDT), hermetically-sealed
• OK Relay Location: Behind the power supply, at the Power Supply Input Module
• OK Relay 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)
• OK Relay Ratings (Agency Approval): 5 A at 28 Vdc; 5 A at 120 Vac (50/60 Hz); 30 Vac for ATEX
• OK Relay Contact Life: Minimum 10,000 cycles at rated load
• OK Relay 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%, noncondensing

Installation Guide

1. Ensure the 3300 rack is powered off and disconnected from all power sources before installation.
2. Locate the left-most position (position 1) in the 3300 rack, which is reserved for the power supply.
3. Align the 3300/12-01-20-00 with the rack rails and slide it into position until it locks securely.
4. Connect the AC input power cable to the appropriate terminals on the power supply.
5. Verify the input voltage setting matches your power source (95-125 Vac or 190-250 Vac).
6. If needed, adjust the input voltage via the soldered jumper and replace the external fuse accordingly.
7. Connect the rack’s monitor circuit boards to the power supply’s output terminals.
8. Ensure all connections are tight and secure to prevent electrical issues or signal interference.
9. Power on the rack and check the OK relay status to confirm proper operation.
10. Verify that all monitors and transducers receive stable power from the 3300/12-01-20-00.

Packing List

• 1 × Bently Nevada 3300/12-01-20-00 AC Power Supply
• 1 × Installation Manual
• Anti-static protective bag
• Product identification label

Frequently Asked Questions (FAQs)

1. How many monitors can the 3300/12-01-20-00 power?

   The 3300/12-01-20-00 can deliver reliable power for up to 12 monitors and their associated transducers, so no second power supply is needed in the same rack.

2. Can I adjust the input voltage of the 3300/12-01-20-00?

   Yes, the input voltage is field-changeable. You can adjust it via a soldered jumper and replacement of the external fuse to match 95-125 Vac or 190-250 Vac.

3. What is the operating temperature range of the 3300/12-01-20-00?

   It operates reliably between 0°C to +65°C (+32°F to +150°F), suitable for most industrial environments.

4. What type of relay does the 3300/12-01-20-00 have?

   It has a hermetically-sealed single-pole, double-throw (SPDT) OK relay that is normally energized.

5. Where should I install the 3300/12-01-20-00 in a 3300 rack?

   It must be installed in the left-most location (position 1) of the 3300 rack to ensure proper power distribution to all monitors.