Shiva Amvaj Load Phase Monitor Relay

Shiva Amvaj Load Phase Monitor Relay monitors the following functions on 3-phase supplies:
Phase less
Phase sequence
Phase or current asymmetry
Over/under voltage
Over/under current

It is suited to industrial applications and does not require a CT.

Two models:

• 0.5-15A model with accuracy of 0.1A
• 1-60model with an accuracy of 1A

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Features

• Microprocessing unit provides complete protection for three-phase devices
• Current control based on I²t curve
• Measures current without requiring a CT and with direct cable connection (max 22 mm²)
• Displays current, set values, and error warnings
• Protection:
  • Over current, under current, current asymmetry
  • Over voltage, under voltage, voltage asymmetry,phase less and phase sequence
• Display:
  • Voltage
  • Operating times(in presence of current)
  • Number of current connection/disconnection times
• Automatic reset can be enabled or disabled
• Indicators:
  • OL: over current (1-60A or 0.5-15A)
  • UL: under current (maximum a unit*less than OL)
  • %A: current asymmetry (7-100%)
  • Normal: relay mode (blinking =ready to reset)
  • On Delay: on/reset delay (0-24 sec)

1. In the 15A and 60A models, a unit respectively equals 0.1A and 1A. Setting UL to zero disables undercurrent mode.
2. Initial start time indicates the time after relay connect and current conduction during which under voltage and over current are not considered.

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Specifications

• Supply voltage: 180-250 VAC /50-60 Hz
• Input voltage: 300-500 VAC/3PH 50-60 Hz
• Accuracy:
  • Model LPF-15A: 0.1A
  • Model: LPF-60A: 1A
• Operating conditions
  • Temperature: -20 to 65 ^oC
  • Humidity: 70%
• Output: a 5A relay