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IDMT Relays

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MOQ : 1 Unit

IDMT Relays Specification

Ambient Temperature
-10C to +55C

Contact Resistance
50 m

Coil Power
3 VA

Contact Form
SPDT/DPDT

Contact Material
Silver Alloy

Coil Voltage
110V/220V/415V AC

Working Temperature
-10C to +55C

Power Consumption
3W

Mechanical Life
>10 Operations

Dielectiric Strength
2kV AC for 1 min

Protect Feature
Overcurrent/Time Delay Protection

Product Type
IDMT Relay

Insulation Resistance
>1000 M at 500V DC

Theory
Electromagnetic/Electromechanical

Usage
Industrial Protection and Control Panels

Contact Load
5A at 250V AC

Operate Time
2.5 sec 10 sec (Adjustable)

Terminal Type
Screw Terminal

Rated Voltage
110V/220V/415V AC or as required

Supply Terminal
Front Wired

Color
Gray & Black

Dimension (L*W*H)
70mm x 120mm x 160mm

Weight
650g (Approx.)

Humidity
Up to 95% RH (Non-Condensing)

Frequency
50Hz/60Hz

Storage Temperature
-25C to +70C

Trip Indicator
Mechanical Flag Provided

Standards Compliance
IS/IEC 60255

Mounting Type
Flush/Panel Mounting

Relay Type
Inverse Definite Minimum Time (IDMT) Overcurrent Relay

Reset Time
Less than 2 seconds

Application
Feeder/Transformer Protection in Electrical Substations

IDMT Relays Trade Information

Minimum Order Quantity
1 Unit

Supply Ability
1000 Units Per Week

Delivery Time
3 Days

About IDMT Relays

We are an eminent manufacturer of IDMT Relays to our highly reputed clients. They are one of the most demanded relays which we fabricate using superior quality material and hi tech machinery in order to serve our clients with a flawless range of relays. Our clients have acknowledged our range of IDMT Relays for their quality, functionality, corrosion resistance, durability and a long operational life. This has gained us highly rising demands among that of our competitors in the market.

Reliable Substation Protection

Designed specifically for feeder and transformer protection, this IDMT relay integrates seamlessly into electrical substations. Its overcurrent and time delay features ensure that critical systems remain safeguarded from abnormal currents, minimizing equipment damage and operational downtime.

Versatile Installation and Robust Construction

With flush or panel mounting options, screw terminals, and a durable gray and black enclosure, this relay adapts effortlessly to various control panel layouts. High insulation resistance and a mechanical life exceeding 10 million operations guarantee long-term performance even in demanding environments.

Compliance and Performance Standards

Tested to IS/IEC 60255 standards, the relay offers excellent dielectric strength, operates reliably across a wide temperature range, and endures high humidity. Its SPDT/DPDT contacts with silver alloy ensure low contact resistance and dependable switching under load.

FAQs of IDMT Relays:

Q: How does the IDMT relay contribute to electrical substation safety?

A: The IDMT relay detects overcurrent conditions and initiates a controlled trip, thus protecting feeders and transformers. Its inverse time characteristic ensures that higher fault currents are cleared more rapidly, preventing equipment damage and reducing outage durations.

Q: What are the recommended mounting methods for this relay?

A: This relay supports both flush and panel mounting, enabling flexible integration into protection and control panels. Its compact size and front-wired screw terminals simplify installation and maintenance processes.

Q: When should the adjustable operate time be set and how?

A: The relays operate time is adjustable between 2.5 and 10 seconds. Adjustment should be carried out during commissioning to align with system coordination studies and desired protection characteristics, ensuring optimal response to potential faults.

Q: Where is this relay most effectively utilized?

A: Ideal applications include industrial substations and power distribution panels protecting feeders and transformers. Its wide voltage compatibility and robust build make it suitable for various industrial environments across India.

Q: What is the benefit of the mechanical flag trip indicator?

A: The mechanical flag provides a clear and immediate visual indication of relay operation, assisting technicians in fault diagnostics and expediting system restoration activities without requiring auxiliary power.

Q: How does the relay withstand harsh environmental conditions?

A: With insulation resistance exceeding 1000 M at 500V DC, operation at up to 95% relative humidity (non-condensing), and a wide ambient temperature range, the relay efficiently resists dust, moisture, and temperature fluctuations common in industrial settings.

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