Qualitrol 909 Seal-in Pressure Relay
m-l Recommended for use in Medium and Large Transformers with a typical voltage range of 138 kV to 345 kV and more.
For use with Qualitrol 900/910 series Rapid Pressure Rise Relays and other instruments to maintain momentary alarm and trip circuits. The relay and LED indicator remains activated until the manual reset button is pressed.
Features
- Eliminates problematic and momentary relay actions
- Eliminates the difficulty of controlling alarms and other peripheral devices with momentary or chattering contact signals
- Configurable for use varying applications
- One model configurable for either 48, 125, 250 VDC or 120, 240 VAC
- Mounting footprint and wiring is compatible with existing installations of similar devices
- Two independent relays provide simultaneous operation for control functions
- Corrosion resistant materials and rugged design provide a long service life
- Stainless steel cover protects components
- Printed circuit board provides high reliability
- Seal-in function controlled by solid state device
- Trip circuit contacts are protected by surge suppressor
- Wiring connections and jumper configurations are printed on shield
- Convenient jumper plug allows easy adaptability to various supply line voltage and current types
- Red LED indicates actuation of relay
- Yellow LED indicates a short in the switch or faulty wiring
Options
- Explosive Environments Class 1/Division 2 Protection
Applications
For power transformers or any other applications which require a momentary contact signal to be maintained. Can be configured for use in AC or DC applications.