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| TR7207 Murphymatic® Transformer Relay Assembly |
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The TR7207 Murphymatic® Transformer Relay Assembly is an Electric Motor Controller. It is ideal for controlling a variety of electric motor driven applications, and is recommended for use on salt water disposal systems, waterflood systems, and many others. The TR7207 can be used for emergency shutdown of electric motor driven equipment that is manually started. A Tattletale® indicates shutdown and locks out power until the malfunction is corrected and the Tattletale® is reset. A momentary power failure during shutdown will not void the lockout feature. For use with standard, normally open, one-wire to ground Murphy Swichgage® instruments.
When the TR7207 is used with a Murphy Analog Swichgage®, it allows for visual reading of operating conditions, and provides an adjustable differential between high and low settings throughout the Swichgage® dial range. All internal control circuits are completely pre-wired and relays are plug in type to facilitate field servicing. A NEMA 1 enclosure is standard.
Some of the features and specifications of the TR7207 are as follows:
* The panel contains a heavy-duty transformer with multiple primary taps for easy connection to most any available AC power source.
* 24 VAC Low Voltage secondary control circuit with terminals for remote auxiliary switches.
* Plug-in relays have three SPDT silver cadmium oxide contacts providing long life reliability.
* Power relay has extra heavy silver cadmium oxide contacts rated 10 amp, 480 VAC.
Transformer: Primary (power supply) with triple taps fpr 120/240/480 VAC. 50/60 Hz. Secondary (control supply) 24 VAC. Power Rating 25 VA.
Terminal Blocks: High Voltage rated at 30 A, 600 V.; Low Voltage rated at 20 A, 300 V.
Control Relays: Plug-in, 120 V, 10 A contact rating.
Contacts: Power (holding): 10 A, 480 VAC, SPST.; Control (auxiliary): 480 VAC, 690 VA pilot duty.
Conduit: Top: 3/4" hub; Bottom: 1/2" hole.
Sales Bulletin
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