1 PCS NEW SEL-587 0587103X5X1 RELAY #LYQ007
1 PCS NEW SEL-587 0587103X5X1 RELAY #LYQ007
1 PCS NEW SEL-587 0587103X5X1 RELAY #LYQ007
1. General Information (Original SEL Factory Standard)
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Parameter
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Specification
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Unit
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Notes (Original Factory Description)
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Brand
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SEL (Schweitzer Engineering Laboratories)
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-
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Genuine SEL Original Factory Production, 100% Authentic, Industrial-Grade High-Reliability Protection Relay[1]
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Product Model
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SEL-587 (Order Code: 0587103X5X1)
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-
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Original SEL Factory Model, Factory Calibrated, No Modification, 0587103X5X1 as Official Order Code[1]
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Product Name
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SEL-587 Current Differential Protection Relay (0587103X5X1)
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-
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High-Precision Industrial Protection Relay, Specialized for Power System Current Differential Protection[1]
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Product Type
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Industrial-Grade Protection Relay, Current Differential Relay, Power System Protection Device
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-
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Designed for Power System Protection, Integrated Protection and Control Functions, High Compatibility with SEL Systems[1]
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Operating Voltage
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120/240 VAC (Nominal); 125/250 VDC (Optional); Allowable Fluctuation: ±15%
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VAC/VDC
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Original Factory Calibrated Voltage Rating, Compatible with Industrial Power Supply Standards, Stable Operation Under Fluctuation[1]
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Operating Current
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≤ 0.3 A (AC, Full Load); ≤ 0.4 A (DC, Full Load); No-Load Current: ≤ 0.1 A
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A
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Low Power Consumption, Energy-Saving Design, Complies with SEL Industrial Energy Efficiency Standards[1]
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Input Current Range
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5 A RMS (Nominal); 20 A RMS (Maximum Continuous); 200 A RMS (Short-Time, 1 Second)
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A RMS
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High Current Bearing Capacity, Suitable for Power System Current Detection, Accurate Signal Acquisition[1]
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Differential Current Setting Range
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0.1 ~ 20 A (Adjustable); Step: 0.1 A
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A
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Adjustable Setting, Flexible Adaptation to Different Protection Scenarios, High Setting Accuracy[1]
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Accuracy
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±0.5% of Full Scale (FS) for Current Measurement; ±1% of Setting for Differential Protection
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-
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High Measurement and Protection Accuracy, Ensures Reliable Power System Protection, Meets SEL Factory Standards[1]
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Response Time
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≤ 5 ms (Typical, Fault Detection); ≤ 20 ms (Maximum, Protection Action)
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ms
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Fast Response Speed, Real-Time Fault Detection and Protection, Reduces Power System Damage[1]
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Operating Temperature Range
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-40 ~ +70 °C (Ambient Temperature); No Derating Required Within Range
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°C
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Wide Temperature Adaptation, Stable Performance in Extreme Industrial Environments, Suitable for Outdoor/Indoor Use[1]
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Storage Temperature Range
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-40 ~ +85 °C; No Condensation During Storage
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°C
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Suitable for Long-Term Storage and Transportation in Extreme Temperature Conditions Without Performance Degradation[1]
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Relative Humidity
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0 ~ 95% RH (Non-Condensing); Operating Humidity: 10 ~ 90% RH
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% RH
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Strong Humidity Resistance, Adaptable to High-Humidity Power Plant and Substation Environments[1]
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Protection Level
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IP54 (Front Panel); IP20 (Rear Terminal); Complies with IEC 60529
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-
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Dust-Proof and Splash-Proof Design, Prevents Dust and Water Ingress, Protects Internal Components[1]
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Mounting Type
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Panel Mounting; Standard DIN Rail Mounting (Optional); Screw Fixing
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-
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Easy to Install and Disassemble, Compatible with Standard Control Panel and DIN Rail, Convenient for On-Site Maintenance[1]
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Dimensions (W×H×D)
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140 × 170 × 110 mm (Tolerance: ±0.5 mm); Installation Depth: 110 mm
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mm
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Compact Design, Saves Control Panel Installation Space, Easy to Integrate with Other SEL Protection Devices[1]
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Weight
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Approx. 0.85 kg (Including Housing, Terminal and Mounting Accessories)
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kg
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Sturdy Structure, Lightweight Design, Convenient for Transportation and On-Site Installation[1]
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Insulation Class
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Class H; Insulation Resistance: ≥ 200 MΩ (500 VDC)
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-
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High Insulation Performance, Prevents Short Circuit and Electric Leakage, Ensures Safe Operation in Power Systems[1]
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Protection Functions
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Current Differential Protection, Over-Current Protection, Under-Current Protection, Fault Recording, Alarm Output
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-
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Multi-Protection Design, Comprehensive Power System Protection, Fault Recording for Troubleshooting[1]
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Certifications
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CE Certified, UL Certified, IEC 61850 Certified, IEEE C37.20.1 Certified
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-
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Complies with International Power System Quality, Safety Standards, Applicable to Global Power Scenarios[1]
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Service Life
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≥ 15 Years (Continuous Operation, Normal Working Condition); ≥ 60,000 Hours MTBF
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Years, Hours
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Long Service Life, Low Maintenance Frequency, Reduces Power System Protection Replacement Costs[1]
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Application
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Power Plants, Substations, Industrial Power Distribution Systems, Transmission Lines, Transformer Protection
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-
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Widely Used in Various Power System Protection Scenarios, Providing Stable and Reliable Protection Functions[1]
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Compatible System
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SEL-351, SEL-353, SEL-421 Series Relays, SEL Real-Time Automation Controller (RTAC), SEL Communication Systems
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Perfectly Compatible with SEL Power System Protection and Control Equipment, Plug-and-Play, Signal Synchronization[1]
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