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Product Name: Feeder Protection Management Relay
Brand Name: GE
Model Number:SR750-P5-G5-S5-HI-A20-R
Country of Origin:USA
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
General Electric |
Model Number: |
SR750-P5-G5-S5-HI-A20-R |
Country of Origin: |
USA |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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Send an email: |
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Contact in Whatsapp: |
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Manufacturer |
GE Multilin (General Electric) |
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Part Number |
SR750-P5-G5-S5-HI-A20-R |
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Product Series |
750/760 Feeder Management Relay / SR Family |
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Product Type |
Feeder Management Relay / Feeder Protection Relay |
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Phase Current Inputs (P5) |
5 A secondary |
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Zero-Sequence Input (G5) |
5 A secondary |
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Sensitive Ground Input (S5) |
5 A secondary |
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Control Power (HI) |
88–300 V DC or 70–265 V AC @ 48–62 Hz |
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Analog Outputs (A20) |
Eight (8) 4–20 mA, fully isolated, assignable |
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Breaker Closed LED (R) |
Red LED indicator |
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Display |
Basic display (40-character LCD) |
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Processor Architecture |
Dual microprocessors: Motorola 68332 (32-bit) + Intel 80C186 (16-bit) |
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Sampling Rate |
16 samples per cycle (waveform capture) |
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Event Recording |
128 time-tagged events |
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Oscillography |
10 records × 32 power cycles |
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Communications |
Front RS232; rear RS485 (dual) |
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Protocols |
Modbus RTU, DNP 3.0 Level 2, Modbus TCP/IP (optional Ethernet) |
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Operating Temperature |
–40°C to +60°C |
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Dimensions (H × W × D) |
8x17.8x23cm |
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Weight |
5.08kg |
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Mounting |
Drawout case with companion case (SR-series standard) |
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Software |
EnerVista 750/760 Setup |
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Country of Origin |
Canada / USA |
The GE Multilin SR750‑P5‑G5‑S5‑HI‑A20‑R is a microprocessor‑based feeder management relay from the SR family, engineered for primary protection and control of distribution feeders. The SR750‑P5‑G5‑S5‑HI‑A20‑R integrates comprehensive overcurrent, voltage, frequency, and directional protection elements within a compact drawout case. With 5A phase, zero‑sequence, and sensitive ground inputs, plus eight 4–20 mA analog outputs, the SR750‑P5‑G5‑S5‑HI‑A20‑R offers flexible connectivity for demanding industrial and utility applications. The wide‑range HI control power (88‑300 V DC / 70‑265 V AC) and rugged construction make the SR750‑P5‑G5‑S5‑HI‑A20‑R a reliable choice for harsh environments.
Primary distribution feeder protection – medium‑voltage feeders in utility and industrial networks
Bus and transformer backup protection – interlocking and blocking schemes
Automatic bus transfer – source changeover and load shedding applications
Renewable energy integration – distributed generation (DG) interconnect protection
Industrial power distribution – refineries, chemical plants, steel mills, data centers
Harsh industrial environments – conformal coating options for corrosion/humidity resistance
Dual‑microprocessor architecture – Motorola 68332 (32‑bit) + Intel 80C186 (16‑bit) for fast, deterministic processing
Triple current inputs – 5A phase, 5A zero‑sequence, 5A sensitive ground for comprehensive fault detection
Eight 4–20 mA analog outputs – fully assignable to any measured parameter for SCADA/DCS integration
Wide‑range control power (HI) – 88–300 V DC or 70–265 V AC, eliminating external power conversion
Drawout case construction – relay slides out for bench testing or replacement while companion case stays wired, minimizing panel downtime
Comprehensive protection suite – directional overcurrent, restricted earth fault, reverse power, synchrocheck, automatic bus transfer, 4‑shot recloser
High‑resolution fault recording – 128 event records + 10 oscillography records (32 power cycles each)
Multi‑protocol communication – Modbus RTU, DNP 3.0 Level 2, optional Modbus TCP/IP (Ethernet)
40‑character LCD display – local access to setpoints, actual values, and diagnostic messages
20 front‑panel LEDs – real‑time indication of relay status, system status, trip and alarm conditions
Field‑upgradeable firmware – supports product enhancements without hardware replacement
Protects distribution feeders – continuously monitors phase, zero‑sequence, and ground currents; trips or alarms on overcurrent, ground fault, reverse power, or frequency deviations
Executes automatic bus transfer – seamlessly switches between power sources upon loss of primary source
Performs synchrocheck – verifies voltage magnitude, frequency, and phase angle before closing a breaker
Records fault data – stores 128 time‑tagged events and 10 oscillography records (up to 32 power cycles) for post‑event diagnosis
Communicates with SCADA – transmits real‑time metering and fault data via Modbus RTU, DNP 3.0, or optional Modbus TCP/IP
Stores critical settings – maintains configuration parameters in non‑volatile memory, surviving control power interruptions
Q1: What does the suffix code ‑A20 mean on the SR750‑P5‑G5‑S5‑HI‑A20‑R?
A1: ‑A20 specifies eight (8) 4–20 mA analog outputs, fully isolated and assignable to any measured parameter for SCADA and external device integration.
Q2: Can the SR750‑P5‑G5‑S5‑HI‑A20‑R be removed for maintenance without shutting down the panel?
A2: Yes. The SR750‑P5‑G5‑S5‑HI‑A20‑R features a drawout case – the relay portion slides out of its companion case for bench testing or replacement while the case remains wired and the panel stays energized, significantly reducing downtime.
Q3: What communication protocols does the SR750‑P5‑G5‑S5‑HI‑A20‑R support?
A3: The SR750‑P5‑G5‑S5‑HI‑A20‑R supports Modbus RTU (via RS485 rear ports), DNP 3.0 Level 2, and Modbus TCP/IP (via optional 10BaseT Ethernet port), enabling flexible integration into new or existing SCADA and DCS systems.
Q4: What is the difference between the G5 and S5 inputs?
A4: G5 is the zero‑sequence (standard ground) current input for general ground fault detection. S5 is the sensitive ground current input – a 5A input designed for high‑impedance grounded systems, providing enhanced sensitivity for detecting low‑magnitude ground faults that standard overcurrent protection may miss.
Q5: Is the SR750‑P5‑G5‑S5‑HI‑A20‑R suitable for harsh industrial environments?
A5: Yes. The base model is ruggedized for industrial use, and an optional conformal coating (‑H suffix) is available for chemically corrosive and humid environments such as refineries, chemical plants, and coastal substations.
Enquiry Now: [email protected]
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