GE CR215GH87
GE CR215GH87 - Image 2

GE CR215GH87

Original price was: ¥99,999.00.Current price is: ¥88,888.00.

  • Product Introduction: The GE CR215GH87 is a three-phase voltage monitoring relay from the CR215GH series. It continuously monitors three-phase voltage for phase sequence, phase loss, under-voltage, over-voltage, and phase imbalance conditions. The GH87 suffix specifies the voltage range (100V to 240V AC), contact configuration (2 changeover relays), and time delay settings. This relay is essential for protecting three-phase motors, compressors, and generators from damaging voltage abnormalities.
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Category: SKU: ABB 1MRK002122-ABR02-6

Description

GE CR215GH87

Technical Specifications:

  • Monitoring Function: Phase sequence, phase loss, under-voltage, over-voltage, phase imbalance
  • Voltage Range: 100V to 240V AC (three-phase, three-wire or four-wire)
  • Frequency Range: 45Hz to 65Hz
  • Accuracy: ±2% of setpoint
  • Under-Voltage Pickup: 50V to 90V AC (adjustable via front panel potentiometer)
  • Over-Voltage Pickup: 130V to 270V AC (adjustable via front panel potentiometer)
  • Time Delay: 0.1s to 30s (adjustable via front panel potentiometer)
  • Phase Loss Detection: Detects loss of any one phase within 0.5s
  • Phase Sequence Detection: Detects reverse sequence (L1-L3-L2) and opens contact
  • Contact Output: 2 changeover relays (8A at 250V AC)
  • Auxiliary Contact: 1 NO + 1 NC (for status indication)
  • Operating Temperature: -25°C to +70°C
  • Storage Temperature: -40°C to +85°C
  • Humidity: 5% to 95% non-condensing
  • Dimensions: Approximately 90mm x 53mm x 105mm (H x W x D)
  • Weight: Approximately 0.25kg
  • Mounting: DIN rail (35mm) or panel mount with screws
  • Enclosure Rating: IP40 (front panel), IP20 (terminal area)
  • Standards: IEC 60255, EN 60255, UL 508, CE marked

Functional Features:

  • Front panel potentiometers allow adjustment of under-voltage, over-voltage, and time delay without opening the enclosure
  • LED indicators for each phase (L1, L2, L3) show voltage presence (green = normal, red = fault)
  • LED for relay output status (green = relay energized, red = relay de-energized)
  • Phase sequence LED shows correct (green) or reverse (red) rotation
  • Manual reset or auto-reset selectable via DIP switch
  • Test button simulates a phase loss condition for verification
  • Auxiliary contact provides remote status to PLC or SCADA

Application Scenarios:

  • Three-phase motor protection against phase loss (pump stations, compressors)
  • HVAC compressor protection in commercial buildings
  • Generator start-up interlocking (prevents start if voltage is abnormal)
  • Elevator and escalator motor protection
  • Welding machine protection (phase loss causes overheating)
  • Agricultural irrigation pump protection

Performance Parameters:

  • Response Time: Less than 100ms for phase loss detection
  • Reset Time: Less than 50ms after voltage returns to normal
  • Power Consumption: Less than 3VA at 230V AC
  • Insulation Resistance: Greater than 100MΩ at 500V DC
  • Dielectric Strength: 2000V AC for 1 minute (between circuits)
  • MTBF: Greater than 100,000 hours at 25°C

Material Composition:

  • Housing: Flame-retardant polycarbonate (UL94 V-0)
  • Front Panel: Polycarbonate with laser-etched labels
  • Terminals: Copper alloy with tin plating
  • PCB: FR-4 epoxy glass with conformal coating
  • Potentiometers: Sealed multi-turn trimmers (dust and moisture resistant)

Structure Features:

  • DIN rail mount with snap-in clips
  • Front panel accessible for all adjustments (no need to open enclosure)
  • Clear terminal labeling: L1, L2, L3, N for voltage inputs; 11, 12, 14 for relay outputs
  • Removable terminal cover for safe wiring
  • Test button recessed to prevent accidental activation

Working Principle: The relay continuously samples the three-phase voltages via the L1, L2, L3 inputs. It calculates the RMS voltage of each phase, the phase-to-phase voltages, and the phase sequence. If any phase voltage drops below the under-voltage setting for longer than the time delay, or if any phase is lost, the relay de-energizes its output contacts, sending a trip signal to the motor starter. If the phase sequence is reversed, the relay also trips. The over-voltage function operates similarly but trips when voltage exceeds the over-voltage setting. Installation Requirements:

  • Connect L1, L2, L3 to the three-phase supply (observe correct phase sequence)
  • Connect N if using four-wire system (not required for three-wire)
  • Connect relay outputs (11, 12, 14) to the motor starter coil or PLC input
  • Set under-voltage, over-voltage, and time delay using front panel potentiometers
  • Select manual or auto-reset using the DIP switch

Usage Notes:

  • Set under-voltage threshold to 80% of nominal motor voltage (e.g., 192V for a 240V motor)
  • Set time delay to 2 to 5 seconds for motor applications (avoids nuisance trips during brief dips)
  • Always verify phase sequence before energizing the motor
  • Use the test button monthly to verify relay operation

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