Pipeline Corrosion Control

Model OVP2 Over-Voltage Protector by Dairyland Electrical

Created by: Pipeline Corrosion Control

Last updated 12/2025

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Description

OVP2 Overview The Over-Voltage Protector (OVP) design has been established since 1999 as the premier explosion-proof (Division 1) protection device for use on cathodically protected structures, using solid-state technology. Dairyland offers a variation of the OVP design in a molded housing, designated as the OVP2, for Division 2, Zone 2, or ordinary locations. The OVP2 package offers the same conservative design and features of the OVP, but in a lighter weight and lower cost package. Features & Characteristics The only fail-safe "arrester" on the market (i.e.. fails shorted). Solid-state design eliminates arcing. Conduction at much lower voltages than gapped arresters. Rated for AC fault current and lightning surge current. Suitable for submersed or above-ground locations. UL, C-UL listed Div. 2 design, CE marked for ATEX compliance. Corrosion-free, lightweight molded housing. Typical Applications Insulated Joint Protection Airport Fueling Systems Isolation / Bonding Decoupling Equipment Grounds Dairyland's Zone 2 product lines (PCR, SSD and OVP2) have achieved IECEx certification.Specifications Threshold Voltage (absolute) -2/+2V (standard) -3/+1V (optional) Lightning Impulse Current 100 kA crest (8 x 20 µs waveform) Environmental rating: IP-68 - Submersible to 2 m depth. Hazardous (Classified) Areas: ANSI/ISA: Class I, Division 2, Groups A, B, C, D ATEX: Zone 2, Group IIC IECEx: Zone 2, Group IIC UKEx: Zone 2, Group IIC AC Fault Current (Amperes - rms) @ 50/60 Hz Cycles 1.2 kA 2 kA 3.7 kA 5kA 131030 2,1001,6001,4001,200 5,3004,5003,7002,000 6,5005,0004,2003,700 8,8006,8005,7005,000 Model Number Description Chart The OVP2 has been tested by Nationally Recognized Testing Laboratories (NRTLs) for compliance to independent standards in its operation, ratings, and construction. This includes compliance to standards for: Class I, Div. 2, Groups A, B, C, D and Zone 2, Group IIC Class & Division System: UL (United States) and C-UL (Canada) Effective Ground Fault Current Path per: NFPA 70 (US National Electric Code – NEC): Article 250.4(A)(5) CSA C22.1 (Canadian Electric Code, Part I): 10-100 & 10-500 Isolation of Objectionable DC Ground Currents per: NFPA 70: Article 250.6(E) CSA C22.1: 10-100 & 10-500 Hazardous Location Use: Class 1, Division 2, Groups A, B,C,D by UL & C-UL per: UL 121201, 9th Ed. and CSA C22.2 No.213-17 Hazardous Location Use: Class 1, Division 2, Groups A, B,C,D by UL & C-UL per: UL 121201, 9th and CSA C22.2 No.213-17 Safety Requirements for Electrical Equipment per: UL 61010-1, 3rd & CSA C22.2 No. 61010-1 Overvoltage Protection from Impulse (Lightning) Current: 100kA (8 x 20µs) Enclosure Rating: IP68 (Submersible to 2 meters depth)7 Temperature Range: -45°C to +65°C (-49°F to +149°F) Zone System: ATEX / IECEx / UKEx (Europe / International / UK). ATEX per directive 2014/34/EU (Equipment for use in Potentially Explosive Atmospheres): Zone 2, Group IIC, Increased Safety “ec” EN IEC 60079-0: 2018 EN IEC 60079-7: 2015+A1:2018 IEC 60079-0: 2017 IEC 60079-7: 2017 Overvoltage Protection from Impulse (Lightning) Current: 100kA (8 x 20µs) Temperature Range: -45°C to +65°C Enclosure Rating: IP68