Name: Herald Corporation
Address: 1, Chandni Chawk Street, Kolkata, 700072, IN
Telephone: 9830059416
Price range: RS

Product Features:

Din sized enclosure : 96 x 96 x 85mm
LED indication for relay status
Seperate 7 segment window with high brightness red LED display for values and its corresponding parameters .
Auto / Manual Operation
Resetting facility at front panel is available in manual mode
Type of fault displayed through 7 segment display during unhealthy condition .
Trip delay time can be set indivisually for each parameter .
Parameters can be bypassed as per users choice
Relay can be configured to have NO or NC status during healthy condition .
Monitors and trips the load on occurance of any below mentioned fault condition aftera preset time delay .1.Phase failure 2. Phase sequence 3.Phase unbalance 4.Under and Over Voltage 5. Under and Over Current 6.Under and Over frequency 7.earth leakage c

Model	MPR-E1
Function	Phase Unbalance, Phase Reversal, Phase Failure, Under & Over Voltage, Under & Over Current, Under & Over Frequency Monitor and Control, Earth leakage protection
Rated supply voltage	415V AC, 3 phase, 4 wire
Rated frequency	50Hz ± 10%
Power consumption	5VA / 1W
Input Current	Current Input (AR,AY,AB) Ib=5A
Voltage	± 4V of display value
Current	± 5% of Ib ± 1 digit (Ib=5A)
Frequency	± 2% of FS ± 1 digit
Trip time	± 1% of set delay ± 2 sec
Earth leakage current	± 500mA of setting accuracy
Trip setting	Phase Unbalance : 1 to 20% (Adj.)
	Under Voltage : 5 to 100V AC
	Over Voltage : 5 to 100V AC
	Over Current : 105% to 800%
	Under Current : 20%* to 95%
	Over Frequency : 2 to 5Hz
	Under Frequency : 2 to 5Hz
	Earth leakage Current sensitivity range : 1 to 8A
Minimum sensing current*	0.5A
Maximum setting current	5A (Above 5A > Ext. CT can be used, CT setting max. 2500 / 5 Amp in steps of 5)
Trip time delay	1 to 250 secs settable for UB, OV, UV, OC, UC
Earth leakage trip time delay	5 sec Earth leakage
Phase failure trip time delay	< 5 sec
Phase reverse trip time delay	Instantaneous
Frequency trip time delay	Instantaneous
Recovery time	2 sec Min
Power On delay	10 sec Max.
Inrush current delay	1 to 60sec Settable
Mode of Operation	Auto / Manual
Core Balance Current Transformer Type	Toriodal core
Control Output	1 c/o rated for 10A @ 250V AC / 28V DC resistive load
Recovery time	2 sec min
Ambient temperature	Operation: -10⁰C to +55⁰C, Storage: -25⁰C to +80⁰C
Humidity	Max. 85% RH @ 40⁰C
Service life (under no load)	10⁶ operations minimum
Electrical life (under full load)	10⁵ operations minimum
Rated frequency of operation	1800 ± 5% operations per hour max
Insulation resistance	>100M ohms @ 500V DC
Di-electrical strength	1. 2.5KV AC, 50Hz for 1minute. (Between current carrying and non-current carrying parts). 2. 1.5KV AC, 50Hz for 1minute. (Between contacts and control circuit). 3. 750V AC, 50Hz for 1minute. (Between non-continuous contacts of the relay).
Electrical connection	Screw type terminals with self lifting clamps
Mode of operation	Manual / Auto
CBCT Size internal Diameter	Circular 75 / 100 mm
Dimension (over-all)	96 x 96 x 97.5mm (W x H x D)
	* Applicable for more than 2.5 Amps nominal current

Connections:

Dimensions:

Accessories:

Instruction Manual —–1No. RC Filter —–1No.

Hints on correct use:

Tools and Fasteners Kindly use star – type screw driver for tightening the screws.

NOTE: Installation should include a disconnecting device, like switch or circuit breaker, with clear ON/OFF markings, to turn-off the auxiliary
supply (control power).The disconnecting device should be within the reach of the equipment and the operator

Caution:

Apply appropriate personal protective equipment(PPE) and follow safety work practices
Only qualified electrical workers should install this equipment. Such work should be performed only after reading this entire set of instructions.
If the equipment is not used in the manner specified by the manufacturer, the protection provided by the equipment may be impaired.
NEVER work alone.
Turn OFF all power supplying the energy meter and the equipment in which it is installed before working on it.
The successful operation of this equipment depends upon proper handling, installation and operation. Neglecting fundamental installation requirements may lead to personal injury as well as damage to electrical equipment or other property.
NEVER bypass external fusing.
NEVER apply the voltages at Program Lock and Auto Reset terminals.
Before performing Dielectric or Megger testing on any equipment in which the monitoring device is installed, disconnect all the input and output wires to the monitoring device. High voltage testing may damage electronic components contained in the monitor
The monitoring device should be installed in a suitable electrical enclosure.
EAPL is not responsible for any consequential damages arising out of use of our products, though the technology is cautiously chosen and implemented like any other well designed good electric device.