DC Earth Fault Relays N96D-EFR/d

9800.00 - 14500.00 INR/Piece

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Product Details:

Power Consumption Less than 5VA
Working Temperature 0C to 50C
Mechanical Life >106 operations
Contact Resistance <50 m
Coil Power Approx. 2W
Protect Feature Fail safe, selectable earth fault sensitivity
Contact Form 1 C/O (SPDT)
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DC Earth Fault Relays N96D-EFR/d Price And Quantity

Minimum Order Quantity 5 Piece
Price Range 9800.00 - 14500.00 INR/Piece

DC Earth Fault Relays N96D-EFR/d Product Specifications

Rated Voltage 24V/48V/110V/220V DC (as per model)
Protect Feature Fail safe, selectable earth fault sensitivity
Coil Power Approx. 2W
Terminal Type Screw type terminals
Contact Form 1 C/O (SPDT)
Theory DC Earth Fault Relays
Power Consumption Less than 5VA
Working Temperature 0C to 50C
Mechanical Life >106 operations
Contact Resistance <50 m
Coil Voltage Same as rated system voltage
Supply Terminal Rear side terminal block
Dielectiric Strength 2 kV RMS for 1 min
Insulation Resistance >= 100 M at 500 V DC
Contact Load Low Power
Ambient Temperature -10C to +55C
Size 96 x 96 mm front panel
Product Type DC Earth Fault Relays
Operate Time Typically less than 50 ms
Dimension (L*W*H) 96 mm x 96 mm x 60 mm (approx.)
Color Black with blue and violet front panel
Contact Material Silver alloy
Weight Approx. 250 grams
Usage DC Earth Fault Protection in Battery Charger and DC System

Reset Feature Manual and automatic reset supported
Mounting Type Panel mounting (flush type)
Compliance Standard IS/IEC 60255
Storage Temperature -20C to +70C
Current Setting Configurable via front panel keys
Relay Type Electromechanical
Fault Sensing Range 1 k to 100 k adjustable
Indications LED for fault, relay ON/OFF status
Display Type Digital 7-segment LED display

DC Earth Fault Relays N96D-EFR/d Trade Information

Supply Ability 1000 Piece Per Month
Delivery Time 3-5 Days

Product Description

The N96D-EFR/d senses total current passing from the DC system on Positive or Negative BUS & calculate leakage current passing through earth. The relay operates either during Over Load or when the leakage current goes above the selected value . It has Over Current Range from 20-120% & Earth Fault level setting from 1% to 10% of rated current sensor, for e.g. for 25A Sensor it shall be 5A to 30A for Over Load & 250mA to 2.5A for Earth Fault. It also has time delay setting from 1 to 10 sec for delay in relay operation after fault occurs. The relay has 1 C/O set of contacts each for +ve Earth Fault, Negative Earth Fault & DC Over Load.

Versatile Fault Sensing and Easy Configuration

The N96D-EFR/d relay offers an extensive adjustable fault sensing range from 1 k to 100 k, allowing users to fine-tune earth fault sensitivity according to the application's requirements. Settings can be configured effortlessly via user-friendly front panel keys, making setup and adjustments simple during installation or system updates.

Designed for Reliable DC Protection

Built for rugged industrial environments, this relay supports DC voltages from 24V to 220V (depending on model) and suits battery chargers and DC distribution systems. Its robust electromechanical relay, fail-safe feature, and selectable reset modes provide consistent earth fault protection that meets critical safety standards.

User-Friendly Operation and Display

The device comes with clear digital 7-segment LED indicators to show fault conditions and relay status clearly at a glance. LED indications for fault, relay ON/OFF status, and a front-accessible reset feature ensure both swift response and convenience for operators.

FAQ's of DC Earth Fault Relays N96D-EFR/d:

Q: How can I adjust the fault sensing range and current settings on the N96D-EFR/d relay?

A: The N96D-EFR/d relay allows users to adjust the earth fault sensing range from 1 k to 100 k and configure current settings directly via front panel keys. This provides flexibility to tailor protection levels according to system requirements without opening the device.

Q: What type of indication does the relay provide during an earth fault event?

A: The relay features a digital 7-segment LED display for real-time status, along with dedicated LEDs to indicate the presence of a fault as well as the ON/OFF status of the relay, ensuring operators receive clear and immediate visual feedback.

Q: Where is the N96D-EFR/d typically installed and for which applications?

A: This relay is designed for panel (flush) mounting, making it ideal for electrical panels in industrial settings. It is primarily used for DC earth fault protection in battery charger units and DC power distribution systems.

Q: What reset options are available for this earth fault relay?

A: It supports both manual and automatic reset modes, enabling users to select their preferred method depending on the operational requirements or safety protocols of their system.

Q: How does the relay ensure reliable operation in harsh environments?

A: The relay is constructed to operate reliably across a wide ambient temperature range from -10C to +55C, and it features superior insulation resistance (100 M at 500V DC) and high dielectric strength. Complying with IS/IEC 60255, it is suitable for demanding industrial conditions.

Q: What are the benefits of using the N96D-EFR/d in DC systems?

A: Benefits include rapid fault detection (operate time less than 50 ms), fail-safe operation, selectable sensitivity, durable electromechanical relay design, compact size, and clear LED status indications. This reduces downtime and enhances safety for your battery charger and DC infrastructure.

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