Electronic Pressure Switch for hydraulic Applications
Type: PSP 400 - 07, PSP 400 - 10, PSP 400-7R

The electonic Pressure Switch Type PSP 400 is a device to monitor hydraulic drive systems of high voltage circuit breakers. The pressure switch can also be used for other hydraulik applications.

  • Pressure range 0 ... 400 bar / 5800 psi
  • Pressure can be read out via
    RS232 interface
  • 7 or 10 adjustable pressure
    thresh holds
  • pressure thresh holds
    adjustable via PC
  • very robust - long life time

The PSP 400 series of electronic pressure switches was designed to monitor the hydraulic drive systems used in high-voltage circuit breakers. The devices are used to control the hydraulic pump and to activate and deactivate the various switching interlocks and alarm signals.

The pressure switches can also be used for other hydraulic applications.

  

The type PSP 400 hydraulic pressure switch incorporates a very precise and rugged pressure sensor operating on a polysilicon-on-steel principle. It incorporates self-diagnosis for safety-critical applications. The evaluation unit is microprocessor-based.

All switching thresholds can be user-programmed by means of a PC or notebook computer, through an RS232 interface.

The pressure switch has 7 or 10 floating NC/NO (normally closed/open) contacts to signal that a threshold has been crossed. An additional NC/NO floating contact is used for malfunction reporting purposes.

  Druckschalter für Hydraulik Typ PSP 400

The current pressure value can be read out via the RS232 interface.Programmed values will not be lost in case of a power failure.The pressure switch incorporates an optical function indicator.

The following signals will be read out once control voltage has been applied:      

  • Green LED on = normal operation     
  • Red LED on = threshold limit overrun registered      

The lifetime of the electronic pressure switch is about 30 years.     

It is impossible for an undefined condition to arise at the relay outputs pursuant to a malfunction in the sensor, the evaluation unit (microprocessor, memory, A/D converter, DC/DC converter) or at the output device itself (the relays).

The pressure switch can also be delivered with built-in, redundant power supplies, then designated as Type PSP 400-7R.

 Technical Data Pressure Switch Type PSP 400

 Range:    0…400 bar / 5800 psi      
 Max. pressure:    600 bar / 8700 psi    
 Supply voltages:    60VDC...250VDC; 120VAC...240VAC    
 Linearity:    < 0,2%FS (typ.)    
 Hysteresis:    < 0,05%FS (typ.)    
 TK zero: TK sensitivity:    < 0,02%FS/K (typ.) < 0,01%FS/K (typ.)    
 Durability:    < 0,1%FS (typ.)    
 Electrostatic discharge:    IEC 61000-4-2 Class 2    
 Highfrequency irradiation:    IEC 61000-4-3 Class 3    
 Burst:    IEC 61000-4-4 Class 4    
 Surge voltage:    IEC 60255-5: 5kV 1,2/50 μs    
 Interference:    IEC 61000-4-6 Class 3    
 Isolation test:    IEC 61180-1: 2 kV 50 Hz    
 Oscillation:    IEC 60100-4-12: 100 kHz und 1 MHz    
 Sinus oscillation:    IEC 60068-2-6: 10 - 150 Hz, 2 g    
 Vibration: Seismic endurance:    IEC 60068-2-27: ± 10 g, ± 1 mm IEC 60068-2-3: 1,6 - 35 Hz 4 mm/1 g  
 Operating temperature: Storage temperature:    -40…+70 °C / -40... +158°F -50…+70 °C / -58... +158°F  
 Protection    IEC 60529: IP 20    
 Plug    Phoenix Combicon    
 with screw base:    IEC 60947, max. 2,5 mm²    
 Electrical ratings Relay contacts    250 VDC, 0,28 A (0,4 A) 220 VDC, 0,3 A (0,45 A)  
 Load inductive (resistiv):    125 VDC, 0,5 A (0,7 A)    
   110 VDC, 0,56 A (0,8 A)    
   60 VDC, 4,2 A (6 A)    
   48 VDC, 5,6 A (8 A)    
 Weight:    PSP-400-07:    1518 g    
   PSP-400-10:    1580 g    
 Interface:    RJ45      
 Accessories:        
 Data converter A    RJ45/RS232      
 Data converter B    RJ45/USB-B  

Electronic Pressure Switch for hydraulic Applications

 

 

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