3 phase monitor
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3 phase monitor
Product catalog summary
Specifications
The document outlines specifications for Models 2500 and 2501, which are 3-phase monitors designed to monitor voltages in power distribution systems. These models cover a range of nominal AC voltages from 120V to 600V, with adjustable ranges specified for each voltage level. They operate at a frequency of 50/60 Hz and have an unbalance adjustment range of 2 to 10% per NEMA specifications. The trip delay is adjustable from 1 to 10 seconds, and power consumption is 4.5W per phase. The monitors have a repeat accuracy of ±1% of full scale and an automatic reset type with a reset time of 150 milliseconds.
The document outlines specifications for Models 2500 and 2501, which are 3-phase monitors designed to monitor voltages in power distribution systems. These models cover a range of nominal AC voltages from 120V to 600V, with adjustable ranges specified for each voltage level. They operate at a frequency of 50/60 Hz and have an unbalance adjustment range of 2 to 10% per NEMA specifications. The trip delay is adjustable from 1 to 10 seconds, and power consumption is 4.5W per phase. The monitors have a repeat accuracy of ±1% of full scale and an automatic reset type with a reset time of 150 milliseconds.
Features
The monitors are equipped with SPDT output contacts rated at 30 amps at 28VDC/300VAC and 5 amps at 480/600VAC. They operate within a temperature range of -4º to +131º F and can tolerate humidity levels from 0-97% without condensation. The enclosure is made of ABS plastic, and the units weigh 2 lbs. 5 oz. They are UL Listed to U.S. and Canadian safety standards and are designed to monitor for phase loss, reversal, low voltage, or voltage unbalance.
The monitors are equipped with SPDT output contacts rated at 30 amps at 28VDC/300VAC and 5 amps at 480/600VAC. They operate within a temperature range of -4º to +131º F and can tolerate humidity levels from 0-97% without condensation. The enclosure is made of ABS plastic, and the units weigh 2 lbs. 5 oz. They are UL Listed to U.S. and Canadian safety standards and are designed to monitor for phase loss, reversal, low voltage, or voltage unbalance.
Description
The Models 2500 and 2501 use solid-state voltage and phase angle sensing circuits to drive an electromechanical output relay. They do not require a neutral connection and can be connected to any three-phase WYE or DELTA configured system. Model 2500's relay energizes under abnormal conditions, while Model 2501's relay de-energizes. Adjustments for voltage, unbalance, and time delay are accessible on the front of the unit.
The Models 2500 and 2501 use solid-state voltage and phase angle sensing circuits to drive an electromechanical output relay. They do not require a neutral connection and can be connected to any three-phase WYE or DELTA configured system. Model 2500's relay energizes under abnormal conditions, while Model 2501's relay de-energizes. Adjustments for voltage, unbalance, and time delay are accessible on the front of the unit.
Installation Instructions
Installation requires mounting the unit in a stable location and connecting control wiring to the terminals. Power should be applied after ensuring all phases are correct. Adjustments can be made to the voltage and unbalance settings to ensure proper operation. Safety precautions include turning off all power before servicing to prevent electric shock, burn, or explosion.
Installation requires mounting the unit in a stable location and connecting control wiring to the terminals. Power should be applied after ensuring all phases are correct. Adjustments can be made to the voltage and unbalance settings to ensure proper operation. Safety precautions include turning off all power before servicing to prevent electric shock, burn, or explosion.
Warranty
The monitors come with a 5-year unconditional warranty from Time Mark Corporation, covering repair or replacement if the device fails within five years of purchase.
The monitors come with a 5-year unconditional warranty from Time Mark Corporation, covering repair or replacement if the device fails within five years of purchase.
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Catalog excerpts
true nuisance trips are eliminated. Adjust the TRIP DELAY and UNBAL ADJUST as required by the system. > HAZARD OF ELECTRIC SHOCK, BURN OR EXPLOSION > POWER CONTROL & INSTRUMENT CIRCUITS MAY BE SUPPLIED BY REMOTE SOURCES Rotate the VOLTAGE ADJUST to the desired percent of nominal voltage, or slowly clockwise, until the contacts transfer to the failed condition (LOW indicator-ON). Slowly turn the adjustment counter-clockwise until the contacts reset to the normal condition (LOW indicator-OFF; NORMAL indicator-ON). Remove the jumper from the control contacts, if installed. This setting will be correct...
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