Polarization Cell Replacement H (PCRH)

• Solid-State Design: Uses proven solid-state components with an instantaneous response to voltage, initiating voltage clamping immediately when voltage attempts to exceed the selected blocking level.
• DC Isolation with AC Grounding: Prevents the flow of DC current while simultaneously providing a grounding path for steady-state AC current.
• AC Voltage Mitigation: Collapses the steady-state voltage between connected points to a negligible level by providing continuous AC grounding for pipelines with induced AC, while leaving cathodic protection unaffected.
• Overvoltage Protection: Provides protection against both lightning and AC fault current.
• Fail-Safe Operation: If failure occurs due to AC fault current or lightning surge current in excess of its rating, the device fails in the shorted mode, providing an effective grounding or conducting path.
• Hazardous Location Certification: Designed and certified for Class I, Division 1, Groups B, C, D and Zone 1, Group IIB hazardous locations.

• DC Blocking Voltage Rating: Standard asymmetrical rating of -3.0 V to +1.0 V; optional symmetrical rating of ±2.0 V. Custom blocking voltage levels available upon request.
• Steady-State AC Current Rating: 45 A continuous at 50/60 Hz; maximum values of 50 A at 20°C and 40 A at 65°C.
• Steady-State AC Impedance: 9.8 milliohms at 60 Hz; 11.9 milliohms at 50 Hz.
• AC Fault Current Ratings: 3-cycle ratings: 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-cycle ratings: 4,200 A, 5,700 A, 12,000 A and 21,000 A, respectively; 30-cycle ratings: 3,700 A, 5,000 A, 10,000 A and 15,000 A, respectively. A 1-cycle rating is also available: 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.
• Voltage During AC Fault Current: Less than 10 V AC between connection points under the maximum fault current ratings.
• Lightning Surge Current Rating: 100,000 A peak; 8 × 20 microsecond waveform.
• Voltage Across Clamping Elements: Less than 250 V at rated lightning surge current.
• DC Leakage Current: Well under 1.0 mA under typical operating conditions at 0.85 to 1.25 V DC, even at temperatures up to 65°C.
• Enclosure: Explosion-proof cast aluminum; NEMA 4X for Division 1 devices and IP66 for ATEX/IECEx devices.
• Temperature Range: -45°C to +65°C (-49°F to +149°F) for Class and Division system; -20°C to +60°C for Zone system.
• Terminals: 1/2"-13 diameter threaded stud, 0.875" long.
• Mounting: 3/16" (4.8 mm) thick aluminum backplate; suitable for flat-surface mounting with two 1/2" (12 mm) bolts or U-bolt mounting to a 2" pipe (2.375" or 60.3 mm outside diameter).
• Energy Requirements: None. The device is totally passive.
• Number of Operations: Virtually unlimited under maximum ratings, provided operations are not immediately repetitive.
• Certifications: UL and C-UL; Class I, Division 1, Groups B, C, D; Zone 1, Group IIB; ATEX and IECEx. Also complies with applicable UL, CSA, NFPA and IEC standards listed in the datasheet.

Product Data Sheet - ENG