Automatic Refrigerator & Deep Freezer Protector


Application

The Dolphin is designed to protect Refrigerator & Deep Freezer against the hazards of over-voltage and over-current caused by under-voltage. The fully automatic operation of the protector now enables its use at places where ordinary circuit breaker could not be used, because of tripping problems. Dolphin protects against short circuit before it occurs.

FUNCTIONAL DESCRIPTIONS


The Dolphin Refrigerator & Deep Freezer Protector comes in an ergonomic direct-mounting palm size case.
Dolphin supplies power to the Refrigerator & Deep Freezer, as long as the line voltages remain between 175V and 265V.
In case the line voltage falls below 175V and stays there for longer than 0.5 seconds continuously, the supply to the Refrigerator & Deep Freezer will be cut-off.

The Dolphin will automatically resume supply to the load once the line volts are normal. No manual intervention is needed.
Similarly, if the line voltage rises above 265V and stays there for longer than 0.5 seconds continuously, the supply to the Refrigerator & Deep Freezer will be cut-off.
Again, automatic resumption of supply to the load will take place after the line voltage is normal.

However it will wait for approximately 3 minutes to protect the compressor motor. If power is resumed after more than 3 minutes, the protector will wait for 1.5 seconds only to prevent power back surges reaching the Refrigerator & Deep Freezer.
Reset time varies with the nature of fault, i.e. bigger voltage dip causes a longer time.
One unique feature of the design is inverse delay response characteristic. The tripping time of 0.5 second reduces proportionally to the depth of under-voltage or the height of over-voltage.


LED INDICATION

NORMAL (GREEN)
When green light illuminates, it indicates that Dolphin (AAP) detects a normal Line voltage.
FAULT (RED)
The light indicates Dolphin (AAP) is protecting your Air Conditioner from a damaging over/under voltage condition.
BLINKING (RED)
After your Dolphin (AAP) has detected a damaging voltage it has delayed the resumption of power supply for approx. 180 sec. to protect the compressor motor.

SPECIFICATIONS

ELECTRICAL

Operating Range 160 to 280 V ac
Maximum Load 1000VA / 5 A
Under-voltage Trip 175V ac
Under-voltage Reset 8V ac
Over-voltage Trip 265V ac
Over-voltage Reset 5V ac
Triping Time 0.5 sec
Reset Time approx.* 150~180 sec

* Reset time varies with the nature of fault

PHYSICAL

Color Beige, Grey
Dimensions 118 x 77 x 39 mm
(Excluding Wire)
Weight 270 g (approx.)
Operating temperature 0OC to 60OC
Storage temperature 10 to 80%
   
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