Polarization Cell Replacement (PCR)

• Solid-State Design: The PCR is built with proven solid-state components which have an instantaneous response with respect to voltage, thereby initiating voltage clamping immediately when the voltage attempts to exceed the blocking level selected.
• DC Isolation with AC Grounding: PCR devices perform the necessary function of preventing the flow of DC current, while simultaneously providing a grounding (or coupling) path for steady-state AC current, fault current and lightning.
• AC Voltage Mitigation: As an AC mitigation device, the PCR can collapse the steady-state voltage between the connected points to a negligible level by providing continuous AC grounding for pipelines with induced AC while leaving cathodic protection unaffected.
• Fail-Safe: If subject to AC fault current or lightning impulse current in excess of rating such that failure occurs, failure will occur in the shorted mode. In the shorted mode, the unit can carry greater than rated fault current or lightning impulse current and still provide an effective grounding (or conducting) path.
• Maintenance-Free Design: The solid-state design eliminates the maintenance requirements and potentially hazardous electrolytes associated with polarization cells.
• Hazardous Location Ratings: The PCR is rated for Class I, Division II hazardous locations and is also available in a Class I, Division I package.

• DC Blocking Voltage Rating: Standard asymmetrical rating of -3.0 volts to +1.0 volt; symmetrical voltage blocking rating of ±2.0 volts also available.
• Optional DC Blocking Voltage Ratings: -4 V/+1 V and -6 V/+1 V, available only with the associated 3.7 kA and 5 kA AC fault current ratings.
• Steady-State AC Current Ratings: Standard 45 A rating and optional 80 A rating at 50/60 Hz.
• Maximum Steady-State AC Current: At 20°C: 50 A for the standard 45 A rating and 90 A for the optional 80 A rating; at 65°C: 40 A for the standard 45 A rating and 70 A for the optional 80 A rating.
• Steady-State AC Impedance: At 60 Hz: 9.8 milliohms for the standard 45 A rating and 4.9 milliohms for the optional 80 A rating; at 50 Hz: 11.9 milliohms for the standard 45 A rating and 5.8 milliohms for the optional 80 A rating.
• AC Fault Current Ratings: 1 cycle: 6,500 A at 3.7 kA, 8,800 A at 5 kA, 20,000 A at 10 kA and 35,000 A at 15 kA; 3 cycles: 5,000 A, 6,800 A, 15,000 A and 27,000 A, respectively; 10 cycles: 4,200 A, 5,700 A, 12,000 A and 21,000 A, respectively; 30 cycles: 3,700 A, 5,000 A, 10,000 A and 15,000 A, respectively.
• Voltage During AC Fault Current: Less than 10 volts AC under the maximum fault current ratings.
• Lightning Impulse Current Rating: 100,000 A peak, 8 × 20 microsecond waveform.
• Enclosure Rating: NEMA 4X; optional NEMA 6P submersible version. Zone system enclosure rating: IP66.
• Enclosure Material: Light gray fiberglass-reinforced polyester.
• Temperature Range: -45°C to +65°C (-49°F to +149°F).
• Terminals: Two-hole spade terminals are standard; compact connectors and 4-hole NEMA terminals are available. Preinstalled 1/2-inch stainless steel hardware (bolts, nuts and washers).
• Mounting: Flat-surface mounting with two 3/8-inch (approximately 10 mm) diameter bolts, furnished by the user.
• Packaged Weight: Approximately 12–22 lb (5.5–10 kg), depending on the model selected.
• Energy Requirements: None. The devices are totally passive.
• Number of Operations: Virtually unlimited under maximum ratings, provided the operations are not immediately repetitive.
• Certifications: UL and C-UL; Class I, Division 2, Groups A, B, C and D; Zone 2, Group IIC; ATEX, IECEx and UKEx.

Product Data Sheet - ENG