ABB 1MDB07217-YN REJ603 Feeder Protection Relay

Description

ABB 1MDB07217-YN REJ603 Brand and Model Identification
Brand: ABB
Model Number: REJ603 (Document/Product Guide Reference: 1MDB07217-YN)
Product Version: 3.0
Product Name: Self-Powered Feeder Protection Relay
Physical Specifications
Housing Design: Compact flush-mount or panel-mount industrial protective casing
Dimensions: 160 mm Height x 96 mm Width x 149 mm Depth
Weight: Approximately 0.8 kg (1.76 lbs)

Commercial & Logistics Data
Country of Origin: India / Switzerland (depending on regional manufacturing center allocation)
Customs Tariff Number (HS Code): 8536490000 (Electrical relays for a voltage exceeding 60V but not exceeding 1,000V)
Environmental Limits
Operating Ambient Temperature: -25°C to 55°C (-13°F to 131°F)
Storage Temperature Range: -40°C to 85°C (-40°F to 185°F)
Humidity Tolerance: 5% to 95% relative humidity (non-condensing)
Electrical & Operational Interfaces
Power Supply Requirement: Self-powered via primary current line energy; requires no external auxiliary voltage source.
Energizing Current Inputs: Three-phase currents using ABB-specific matching current transformers (not compatible with conventional standard 1A/5A CTs).
Earth Current Measurement: Calculated internally via neutral current evaluation, or externally via a 1A Core Balance Current Transformer (CBCT) input.
Binary Inputs: One external binary input accepting 24V to 240V AC/DC for remote circuit breaker tripping while the relay is energized.
Control Output: High-energy capacitor discharge impulse output (12 VDC, 50 mJ) designed to actuate a circuit breaker trip coil.
Key Features and Characteristics
Multi-Stage Overcurrent & Earth Protection: Features three distinct stages of non-directional overcurrent protection (ANSI 51, 50-1, 50-2) and two stages of earth-fault protection (ANSI 51N, 50N/51N) equipped with customizable Definite Time (DT) or Inverse Definite Minimum Time (IDMT) curves.
Advanced Coordination Curves: Includes traditional international standards such as Normal Inverse (NI), Very Inverse (VI), Extremely Inverse (EI), and Long-Time Inverse (LI), alongside specialized curves (RI, HR, FR fuses) for seamless integration with downstream grid assets.
Inrush Current Immunity: Incorporates second-harmonic block testing to accurately identify transformer magnetizing inrush and actively prevent nuisance tripping during initial system energization.
Extensive Internal Self-Supervision: Continuously manages runtime software and hardware status loops, alerting operators via dedicated “Ready” or “Internal Relay Failure” (IRF) LEDs if internal issues occur.
Fail-Safe Mechanism: Provides automated fail-safe tripping triggers if an internal relay failure coincides with phase currents soaring beyond twenty times the maximum nominal setting.

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Shipping:
1. Your item will be shipped to all countries via EMS, unless one country cannot be shipped via EMS. We will choose DHL, UPS, or FedEx. Please leave us your phone number.
2. We will ship the product to you on the same day or within 1-2 working days after receiving your payment. The shipping time depends on the country/region where you reside, the customs and habits of your country/region, and especially during peak hours.
3. Assuming (assuming) that the item requires payment of tariffs from your country, the buyer is obligated. We are not responsible for any taxes or customs fees in your country/region.

Return Policy:
1. Please contact us before returning the item.
2. The buyer should inform the seller of all returned items within 7 days after receiving the package. We reserve the right to reject any request to inform the seller for more than 7 days.
3. Returned products must have all original packaging and be in good condition.

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If you are satisfied with the purchase, please leave us an active response.
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