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Minilec Phase Failure Relays D2 VMR1

Minilec Phase Failure Relays D2 VMR1 Specification

Working Temperature
-10C to +55C

Contact Form
1 Changeover (SPDT)

Protect Feature
Phase Loss, Phase Sequence, Voltage Asymmetry

Power Consumption
<2 VA

Coil Power
Internal, Not Applicable

Contact Material
Silver Alloy

Ambient Temperature
-10C to +55C

Contact Resistance
<100m

Dielectiric Strength
2kV AC, 1 min

Mechanical Life
Over 10 Million Operations

Coil Voltage
Internal, Not Applicable

Product Type
Phase Failure Relay

Insulation Resistance
>= 100M at 500V DC

Theory
Electromagnetic Relay

Usage
Phase Failure Protection

Contact Load
5A @ 230VAC

Operate Time
<200 ms

Terminal Type
Screw Terminal

Rated Voltage
415V AC, 3 Phase

Supply Terminal
L1, L2, L3

Size
Compact

Color
Grey

Dimension (L*W*H)
90mm x 22.5mm x 70.5mm

Weight
Approx. 150g

Enclosure Material
ABS Flame Retardant

Response Time
Less than 200ms

Indication
LED for supply ON

Mounting Type
DIN Rail Mounting

Max. Switching Voltage
250V AC

Minimum Load
10mA at 5V DC

Output Relay
SPDT Heavy Duty Electromechanical

Phase Asymmetry Protection
>35V adjustable threshold

Degree of Protection
IP20

About Minilec Phase Failure Relays D2 VMR1

Minilec Phase Failure Relays

OVERVIEW:-

	Suitable for 3 Ph-3W system,
	Microcontroller design,
	Absolute values of UV/OV settings,
	Phase Failure, Unbalance,
	Phase Sequence, under voltage,
	Over Voltage, Auto/Manual reset,
	Adjustable settings for Unbalance,
	UV/OV and trip delays,
	2 CO output relay

TECHNICAL SPECIFICATION :-

Supply Voltage

System	:	100-120 / 220-240 / 380-440V AC -25%+20%, 48-63 Hz
Auxillary	:	Built In (from 3 Phase)

Output Contacts		:	2 CO

Trip Setting(Volts)
	Phase Sequence	:	Yes
	Phase Unbalance	:	4 % - 20 % [Variable]

Under Voltage	For 380-440V AC For 220-240V AC For 100-120V AC	: : :	285-425V AC [Variable] 165-225V AC [Variable] 75-115V AC [Variable]
Over Voltage	For 380-440V AC For 220-240V AC For 100-120V AC	: : :	400-520V AC [Variable] 230-290V AC [Variable] 105-145V AC [Variable]

Trip Time Delay

	On Phase Sequence	:	Instant
	On SP/UV/OV	:	1 To 10 Sec [Variable)

Resetting Mode

Auto/ Manual Reset (External NC Push Buttons)


Weight	:	300 gms.

Dimensions (mm)

	Overall (L x W x D)	:	76 x 56.5 x 117.5
	Mounting (L x W)	:	67 x 46 / 35 mm rail Mounting

Note:

Wherever not specified Contact Rating : 5A @ 230 V AC (resistive)

APPLICATION :-

Suitable for monitoring 3 Ph. System supply from MAINS & used by motor load -
	AC & R Chiller compressor motors.
	AHU Fan /Pump Motors
	Machinery using multiple small motors.
	MAIN powers supply distribution panel board.
	DG Set application
	UPS
	Submersible Pumps
	Hoist & Crane

D2 VMR1 D2 VMR1

Comprehensive Phase Protection

The D2 VMR1 relay provides thorough protection against phase failure, phase reversal, and phase asymmetry, ensuring operational continuity for three-phase systems. Its adjustable asymmetry threshold enhances flexibility for various applications, making it suitable for both automation panels and motor protection needs.

Reliable and Quick Response

Thanks to a rapid response time of under 200 milliseconds, the relay reacts almost instantly to dangerous electrical conditions. It employs a heavy-duty electro-mechanical relay with 1 changeover contact (SPDT), ensuring robust performance and reliable switching for loads up to 5A at 230VAC.

Durable Construction and Easy Installation

Encased in a flame-retardant ABS enclosure, the D2 VMR1 has an IP20 protection rating, making it both safe and durable. Designed for DIN rail mounting, it offers straightforward installation, and screw terminals contribute to secure and easy wiringfor distributors, suppliers, traders, and installers across India.

FAQs of Minilec Phase Failure Relays D2 VMR1:

Q: How does the Minilec D2 VMR1 Phase Failure Relay protect my equipment?

A: The relay monitors your three-phase supply for phase loss, incorrect phase sequence, and phase asymmetry. If it detects any irregularities, it reacts in less than 200ms by activating its internal relay to disconnect or signal the system, preventing potential equipment damage.

Q: What are the installation requirements for the D2 VMR1 relay?

A: Installation is simplemount the relay on a DIN rail and connect supply terminals L1, L2, and L3 using screw terminals. Ensure the system operates within the rated voltage of 415V AC and the ambient temperature range of -10C to +55C.

Q: When should I use an adjustable phase asymmetry threshold?

A: Adjust the phase asymmetry protection if your equipment needs tolerance customization for voltage fluctuations. Set the threshold above 35V for specific application requirements where transient imbalances could occur, ensuring precise response and optimal system safety.

Q: Where can I use this relay?

A: This relay is ideal for any environment where three-phase equipment requires protection: industrial plants, automation panels, pump stations, and commercial installations. Its compact design and IP20 rating suit indoor switchgear cabinets and protected locations.

Q: What benefit does the LED indication provide?

A: The LED indicator allows for quick and easy visual confirmation of supply status. When lit, supply is presentfacilitating routine checks and troubleshooting without specialized tools.

Q: How durable is the relay for long-term use?

A: With a mechanical life of over 10 million operations and robust silver alloy contacts, the D2 VMR1 ensures long-lasting, maintenance-free performance in demanding industrial and commercial settings.

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