The GE / Bently Nevada TK15 Keyphasor Conditioner and Power Supply is a signal conditioning and power distribution module for the Bently Nevada 3500 System. It converts raw sensor signals from proximity, velocity, acceleration, and optical pickup transducers into accurate Keyphasor measurements for speed, phase, and alignment monitoring of rotating machinery. The unit simultaneously delivers multiple regulated DC outputs and integrated power conditioning, enabling precision vibration analysis and machine protection in industrial monitoring applications.
## Technical Specifications
**Signal Conditioning**
• Input Impedance: 100 kΩ
• AC Coupling: Time Constant = 0.2 s, Corner Frequency = 0.8 Hz
• Output Impedance: 249 Ω (short circuit protected)
• Dynamic Voltage Range: ±10 V minimum
• Clamp Range: ±10 V minimum
• Gain Accuracy: ±3% maximum over temperature
• Slew Rate: 1.5 Vdc/µs minimum
• Bandwidth: 0.8 Hz to 30 kHz minimum
• Optical Pickup LED Current: 50 mA typical; Maximum Photo-detector Operating Voltage: 20 Vdc
**Power Supply Outputs**
• +15 Vdc: +16.2 Vdc ±1.2 Vdc, 150 mA max (100 mA with one optical pickup; 50 mA with two), 1 mV pp ripple
• −18 Vdc: −18.9 Vdc ±1.2 Vdc, 300 mA max, 1 mV pp ripple
• −24 Vdc: −24.2 Vdc ±1.5 Vdc, 350 mA max, 1 mV pp ripple (sum of −18 Vdc and −24 Vdc current ≤ 350 mA)
**AC Input**
• Input Voltage: 95–125 Vac or 190–250 Vac (switch selectable)
• Input Frequency: 47–63 Hz, single phase
• Fuse Ratings: 0.5 A, 250 V time-delay (115 Vac); 0.25 A, 250 V time-delay (230 Vac)
**Physical and Environmental**
• Operating Temperature: 0°C to +50°C
• Storage Temperature: −40°C to +85°C
• Relative Humidity: Up to 95% non-condensing
• Dimensions: 89 mm H × 221 mm W × 305 mm D
• Weight: 3.1 kg
## Key Features
• Integrated Keyphasor signal conditioning and multi-output power supply in single module
• Support for multiple transducer types: proximity, velocity, acceleration, optical pickup
• Dual AC input voltage selection for global deployment
• Low-ripple DC outputs for sensitive analog and digital circuits
• Compact 3.5-inch form factor for 19-inch rack integration
## Compatibility & Integration
Designed as a core component of the Bently Nevada 3500 System. Compatible with TK16 Key accessory.
