Dairyland
Polarization Cell Replacement X (PCRX)
SKU: PCRX
Sophisticated Solid-State Decoupling
Building on Dairyland’s proven history of industry-leading product lines, the PCRX represents the next technological leap forward in decoupling technology. Using sophisticated design techniques that represent the work of numerous leading experts around the world, the PCRX’s active capacitance compensation renders it virtually invisible to interrupted survey testing.
Like our other decouplers, the PCRX is a solid-state, maintenance-free device designed to simultaneously provide DC decoupling and AC continuity/grounding when used with cathodically protected structures. Commonly used to decouple electric equipment from grounding systems, for AC mitigation projects, or other isolation and grounding applications, the PCRX is the most sophisticated decoupler in the world.
Key Benefits
- Solid-State Design: Provides an instantaneous response to voltage, initiating voltage clamping when voltage attempts to exceed the selected blocking level.
- DC Isolation with AC Grounding: Blocks direct current while providing a grounding path for steady-state induced AC, helping mitigate AC voltage without affecting cathodic protection.
- Overvoltage Protection: Provides protection against lightning and AC fault current conditions.
- Interrupted Survey Compatibility: Electronically camouflages itself from interrupted surveys, including close interval surveys (CIS), helping prevent inaccurate potential readings caused by decoupler capacitance.
- Fail-Safe Operation: If failure occurs due to AC fault or lightning surge current beyond its ratings, the unit fails in the shorted mode to maintain an effective grounding or conducting path.
Specifications
- Steady-State AC Current Rating: 0 to 45 A RMS.
- AC Fault Current Ratings: 3 cycles: 5,000 A at 3.7 kA, 6,800 A at 5 kA, 15,000 A at 10 kA, and 27,000 A at 15 kA; 10 cycles: 4,200 A at 3.7 kA, 5,700 A at 5 kA, 12,000 A at 10 kA, and 21,000 A at 15 kA; 30 cycles: 3,700 A at 3.7 kA, 5,000 A at 5 kA, 10,000 A at 10 kA, and 15,000 A at 15 kA.
- Lightning Impulse Current Rating: 100 kA peak, 8 × 20 microsecond waveform.
- Standard Blocking Voltage Thresholds: -5.5 V / +2.5 V or -4.5 V / +3.5 V.
- Enclosure Material: Epoxy powder-coated 304 stainless steel.
- Enclosure Rating: NEMA 4X and IP66.
- Terminals: Single-hole compact spade terminal connectors with preinstalled 1/2-inch stainless steel bolts, nuts and washers.
- Temperature Range: -40°C to +50°C (-40°F to +122°F).
- Maximum Altitude: 2,000 meters.
- Ambient Pressure: 80 kPa (0.8 bar) to 110 kPa (1.1 bar).
- Relative Humidity: 0–100% noncondensing.
- Installation: Outdoor use; above-grade mounting on a flat surface or pedestal mounting.
- Energy Requirements: No external power source required.
- Number of Operations: Virtually unlimited under maximum ratings, provided operations are not immediately repetitive.
- Packaged Weight: Approximately 35 lb (16 kg).
- Certifications: UL and C-UL; Class I, Division 2, Groups A, B, C and D; Zone 2, Group IIC.
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Shipping & Returns
Shipping costs and delivery timelines vary by order. All returns require prior written approval and may be subject to a restocking fee.
Please review our Terms & Conditions for complete shipping, return, and warranty details.
