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Bently Nevada 125800-02 Isolated Keyphasor I/O Module with 500 Vdc Isolation and 2-channel Input for API 670 Compliance
Bently Nevada 125800-02 Isolated Keyphasor I/O Module with 500 Vdc Isolation and 2-channel Input for API 670 Compliance
Isolated Keyphasor I/O shaft speed measurement
steam turbine protection Bently Nevada 3500 rack
3500/25 Enhanced Module internal terminations
Herkunftsort:
USA
Markenname:
Bently Nevada
Modellnummer:
125800-02
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Produktdetails
Modell:
125800-02
Ursprungsland:
USA
Versandort:
Xiamen, China
Versand:
TNT, DHL, FedEx, EMS, UPS
Mindestbestellmenge:
1 Stück
Verpackung:
Originale neue Verpackung
Hervorheben:
Isolated Keyphasor I/O shaft speed measurement
,steam turbine protection Bently Nevada 3500 rack
,3500/25 Enhanced Module internal terminations
Zahlungs-u. Verschiffen-Ausdrücke
Min Bestellmenge
1
Preis
66USD
Verpackung Informationen
Ganz neu und original
Lieferzeit
2-3 Arbeitstage
Zahlungsbedingungen
T/T
Versorgungsmaterial-Fähigkeit
Auf Lager
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Produkt-Beschreibung
Bently Nevada 125800-02 Isolated Keyphasor I/O Module
Product Specifications
| Category | Specification | Details |
|---|---|---|
| Identification | Part Number | 125800-02 |
| Module Type | Isolated Keyphasor I/O Module | |
| Termination Type | Internal Terminations | |
| System Compatibility | Bently Nevada 3500 Machinery Protection System | |
| Signal Input | Number of Channels | 2-channel (Half-height) |
| Supported Sensors | Proximitor Sensors, Magnetic Pickups | |
| Input Voltage Range | -0.8 V to -21.0 V (standard) | |
| Performance | Isolation Voltage | 500 Vdc (Channel-to-Chassis Ground) |
| Input Frequency | 1 rpm to 1,200,000 rpm (0.017 Hz to 20 kHz) | |
| Event Capture | ±0.1 ms accuracy | |
| Environmental | Operating Temp | -30°C to +65°C (-22°F to +150°F) |
| Storage Temp | -40°C to +85°C (-40°F to +185°F) | |
| Humidity | 95% non-condensing |
Contact Us for Pricing or Technical Support:
Contact: Miya Zheng
Email: sales@amikon.cn
WhatsApp: +86 180 2077 6792
Key Applications & Features
- Steam/Gas Turbine Protection and API 670 Compliance - Fundamental component for critical asset protection in power generation and petrochemical industries. Provides high-precision once-per-turn pulse signals required for steam turbine monitoring and gas turbine protection. Delivers accurate shaft speed and phase data to ensure API 670 compliant standards and reliable emergency shutdown (ESD) functions.
- Electrically Isolated Input for Ground Loop Elimination - Provides 500 Vdc of isolation between field sensors and monitoring rack. Essential for ground loop elimination in complex industrial environments, particularly where centrifugal compressor monitor cables are subject to electromagnetic noise from industrial rotating machinery or large motors.
- Predictive Maintenance and Phase Vector Diagnostics - Provides essential time-base reference for System 1 condition monitoring. Captures precise phase reference detection and vector parameters for advanced diagnostics in predictive maintenance (PdM), crucial for identifying faults like rotor unbalance or shaft cracks.
- Proximitor Sensor Interface and Internal Terminations - Versatile proximity sensor interface supporting both Proximitor sensors for keyway detection and magnetic pickups for passive speed sensing. Internal terminations allow direct field wiring, simplifying integration within Bently Nevada 3500 rack.
Technical Capabilities
- Dual-Channel Isolated Keyphasor Signal Conditioning - High-performance 2-channel I/O module accepts input signals from two independent Keyphasor sensors. Conditions raw analog pulses into digital once-per-turn TTL-level signals for precise shaft speed measurement and phase reference detection.
- Superior Magnetic Isolation and Signal Integrity - 500 Vdc magnetic isolation between field inputs and internal rack backplane. Critical for ground loop elimination, shielding machinery protection card from electromagnetic interference and electrical noise.
- Universal Proximity and Magnetic Pickup Interface - Versatile proximity sensor interface compatible with both standard Proximitor sensors and passive magnetic pickups. Supports wide input voltage range (-0.8V to -21.0V) for processing pulses from various transducers.
- Integrated Internal Terminations for Simplified Wiring - Internal terminations allow field wiring to connect directly to module terminal blocks without external termination assemblies. Reduces footprint within Bently Nevada 3500 rack module and simplifies installation.
- Enhanced Compatibility and Event Capture Precision - Exclusively designed for 3500/25 Enhanced Keyphasor Module. Offers superior event capture accuracy of ±0.1 ms for phase vector calculation and TDI module integration in API 670 compliant systems.
Frequently Asked Questions
- Q: What’s the 125800-02 actually doing in a protection system?
The Bently Nevada 125800-02 is basically sitting in the 3500 rack as a 2-channel Isolated Keyphasor I/O module, usually paired with the 3500/25 Enhanced Keyphasor Module. In real use, it takes raw signals coming from things like magnetic pickup or other transducers, then conditions them into clean once-per-turn pulse signals. That pulse is what the system uses for shaft speed measurement and phase reference detection. Without it, the monitoring side just wouldn’t have a stable timing reference for rotating machinery. - Q: How does the 125800-02 deal with noise or interference in the field?
Industrial sites are messy electrically, no surprise there. What this module does is apply electrical isolation (around 500 Vdc protection between field side and rack backplane). So even if you’ve got VFDs, turbine systems, or heavy rotating equipment nearby, the Keyphasor signal stays pretty clean. Ground loops get broken, interference gets reduced, and the signal conditioning stays stable enough for reliable monitoring. - Q: Can I mix the 125800-02 with any 3500/25 system?
Not really. This one is tied specifically to the enhanced version. The 3500/25 Enhanced Keyphasor Module (main module 149369-01) is the intended match. Older non-enhanced 3500/25 setups don’t support it, so compatibility is limited there. People sometimes assume they’re interchangeable, but in practice they’re not. - Q: What’s the point of the 125800-02 with internal terminations?
This is one of those small but practical design things. With internal terminations, field wiring from sensors goes straight into the module’s terminal blocks. No extra external termination panels needed. So installation ends up simpler, less cluttered, and honestly saves a bit of rack space too. In large turbine or compressor setups, that small difference adds up. - Q: Is the 125800-02 suitable for safety or critical protection use?
Yes, it gets used quite often in critical rotating machinery protection setups like steam turbine protection and gas turbine monitoring. In systems where overspeed or abnormal vibration needs fast reaction, this module helps feed precise timing signals into the system. Its event capture accuracy (around ±0.1 ms) makes it workable for emergency shutdown logic and SIL 1 to SIL 2 type applications in power plants and industrial asset protection environments.
Compatible Part Numbers
330930-065-01-05
330130-070-00-00
990-05-50-02-01
330130-080-01-05
136483-01
330703-000-060-50-12-00
81544-01
330103-00-06-15-02-CN
82365-01
330130-030-01-CN
82367-01
102044-00-18-10-02
84147-01
144181-50
18622-030-01
3500/42E
330101-30-63-10-02-CN
3500/50E
330101-30-63-10-02-00
330130-035-00-CN
330130-035-01-CN
330130-045-01-CN
330104-00-07-05-02-00
330130-085-01-00
40113-02
330130-035-00-00
330130-040-00-CN
84661-50
330130-045-03-05
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