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118 Intelligent Transformer Monitor
Brand: Qualitrol CompanyThe 118 monitors temperature in up to three (3) Dry-Type transformer windings.
The 118 operates Fan, Alarm, Trip and two (2) additional relays by comparing the winding with the highest temperature to pre-selected relay set point temperatures.
Front panel LED indication available.
Up to two (2) cooling fan banks can be controlled using the heavy duty fused fan control relays.
Features- Monitor up to three dry-type transformer windings
- Built-in fan control, fan exerciser, alarming and trip functions
- 0-1 or 4-20 mA output for integration with SCADA systems
- CE, UL and CSA certified
Specifications
Brand
Accuracy
- ± 3° C
Alarm & Trip
- 120 Vac, 10 A Resistive
- 240 Vac, 8 A Resistive
Contact Ratings Fans
- 120 Vac, 30 A Resistive, 1 hp
- 240 Vac, 30 A Resistive, 2 hp
Display Resolution
- 1° C Increments
Fan Circuit Rating
- UL Rated for 20 A
Fan Exerciser
- Fan Cycle Time - 0.01 to 30.0 Days
- Fan Run Time - 1 to 120 minutes
- Time Starts at Power Up
Front Panel
- Hinge Mount: 8.82” (224.03 mm) Wide x 15.1” (231.1 mm) High
- Panel Mount Unit: 6.5” (165.1 mm) Wide x 9.10” (231.1 mm) High
Hi-Pot
- 1,500 Vac 50/60 Hz for 1 Minute, Relay Contacts & Power Input to All Other Terminals & Earth Ground
Input Measurement Accuracy
- ± 3° C
Input Power
- 48-280 Vdc Universal Power Supply, < 10 W
- 80-300 Vac 50/60 Hz, < 10 W
Measurement Range
- 0° to 250° C (32° to 482° C)
Memory Retention
- 40-Years (with Power OFF)
Mount
- Hinge Mount
- Panel Mount
Operating Temperature
- -30° to 72° C (-22° to 161.6° F)
Optional Modbus Communication
- Via Electrically Isolated 2- or 4-Wire RS-485 Link
Relative Humidity
- 10 to 90 % Non-Condensing
Remote Output Current Loop
- 0 to 10 mA = Into 1,000 ohms, Max.
- 0-1 mA = Into 10,000 ohms, Max.
- 0-20 mA = Into 500 ohms, Max.
- 0-5 V
- 4-20 mA = Into 500 ohms, Max.
Shock
- 10 G's in 3 Orthogonal Planes
Storage Temperature
- -50° to 72° C (-58° to 161.6° F)
Terminal
- Screw Terminal, Max.
Transient Suppression
- Per ANSI 37.90a-1989 Oscillatory Waveform Test
Vibration
- 50/180 Hz at 0.004” Displacement