Bently 3500/53 133388-01P Overspeed Detection Module

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Bently 3500/53 133388-01P

Bently Nevada 3500/53 133388-01P Overspeed Detection Module

Electronic Overspeed Protection for Turbines & Critical Rotating Machinery

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Meta Title

Bently Nevada 3500/53 133388-01P Overspeed Detection Module | 3500 Machinery Protection System

Meta Description

Buy Bently Nevada 3500/53 133388-01P Overspeed Detection Module. High-reliability turbine overspeed protection with redundant voting, fast trip response, and API-compliant safety design.

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Product Overview

The Bently Nevada 3500/53 133388-01P is a dedicated overspeed detection module designed for the 3500 Machinery Protection System. It provides high-integrity electronic overspeed protection for critical rotating equipment such as gas turbines, steam turbines, compressors, and generators.

This module continuously monitors shaft speed signals and initiates alarms or automatic shutdown when configured overspeed thresholds are exceeded, helping prevent catastrophic machine failure and costly downtime.

The 3500/53 is widely deployed in power generation, oil & gas, petrochemical, and heavy industrial facilities where reliable turbine protection is essential.

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Key Features

Dedicated Overspeed Protection

• Real-time shaft speed monitoring
• Fast response trip capability
• Designed for safety-critical machinery

Redundant Voting Logic

Supports:

• 2-out-of-2 (2oo2) voting
• 2-out-of-3 (2oo3) voting (recommended)

This architecture reduces false trips while ensuring dependable shutdown during true overspeed events.

Flexible Sensor Compatibility

Works with multiple speed sensor types:

• Eddy current proximity probes
• Magnetic pickup sensors
• Bently Nevada 3300 / 7200 series sensors

High-Speed Relay Outputs

• 4 configurable relay outputs
• Energized or de-energized logic options
• Direct interface with turbine trip and ESD systems

Industry Compliance

• Designed for API 670 / API 612 overspeed protection requirements
• Built for high-availability industrial environments

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Technical Specifications

Parameter	Specification
Model	3500/53
Part Number	133388-01P
Speed Measurement Range	1 – 99,999 RPM
Max Input Frequency	20 kHz
Input Signal Range	+10 V to −24 V
Input Impedance	20 kΩ
Relay Outputs	4 high-speed trip relays
Power Consumption	~8 W typical
Operating Temperature	−30°C to +65°C
System Requirement	3500 rack with redundant power

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How the Module Works

1. Speed sensors detect shaft rotation pulses
2. The module calculates real-time RPM
3. Speed is compared to configured trip setpoints
4. If overspeed occurs:
   • Alarm relays activate
   • Emergency shutdown system is triggered
   • Turbine safely shuts down

This rapid response protects equipment, personnel, and plant operations.

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Typical Applications

The 3500/53 overspeed module is ideal for protecting:

• Gas turbines
• Steam turbines
• Turbo-compressors
• Generators
• Pumps and fans

Common Industries

• Power generation plants
• Oil & gas facilities
• Petrochemical plants
• Heavy manufacturing

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Benefits

• Prevents catastrophic turbine overspeed failures
• Reduces unplanned downtime and maintenance costs
• Improves plant safety and reliability
• Integrates seamlessly with the 3500 monitoring system
• Proven solution used worldwide in critical applications

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Conclusion

The Bently Nevada 3500/53 133388-01P Overspeed Detection Module delivers dependable, high-integrity overspeed protection for mission-critical rotating machinery. Its redundant architecture, fast response, and industry compliance make it a trusted solution for turbine safety and machinery protection systems.