Dairyland
Over-Voltage Protection (OVP)
SKU: OVP
Explosion-Proof Over-Voltage Protection
Designed to address needs for an explosion-proof protection device, the OVP line of products uses solid-state switching components to conduct at very low voltages, providing the most reliable over-voltage protection available to the industry. The OVP is rated for AC fault current and lightning, ensuring peak performance for the product’s long life outperforming other protection products such as spark gap arresters and surge diverters.
Note: The OVP is not suitable for applications where steady-state induced AC voltage exists between the connection points.
Key Benefits
- Over-Voltage Protection: Provides over-voltage protection from lightning and AC fault current in isolated joint applications.
- AC and DC Isolation: Provides AC and DC isolation for voltages below the selected voltage blocking level, preventing objectionable DC current paths.
- Effective Grounding Path: Provides an effective grounding (or coupling) path whenever the voltage attempts to exceed the selected blocking level.
- 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.
- Fail-Safe Operation: If failure occurs due to AC fault current or lightning surge current, the OVP fails in the shorted mode, providing an effective grounding (or conducting) path.
- 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.
Specifications
- Blocking Voltage Ratings: Standard options: -2/+2 V and -3/+1 V; optional: -4/+1 V and -4/+4 V. Other options ranging from -2/+2 V to -4/+4 V are available upon request.
- AC Fault Current Rating: 3,700 A RMS for 30 cycles; 4,200 A RMS for 10 cycles; 5,000 A RMS for 3 cycles; 6,500 A RMS for 1 cycle.
- Maximum Voltage During AC Fault Current: Less than 7 V AC under the maximum fault current ratings.
- Lightning Impulse Current Rating: 100,000 A peak, 8 × 20 microsecond waveform.
- Lightning Clamping Voltage: At 50,000 A crest: ≤100 V with zero conductor length; ≤1.25 kV with 6" (approximately 150 mm) conductor; ≤1.50 kV with 12" (approximately 300 mm) conductor.
- DC Leakage Current: Normally less than 10 mA at maximum blocking voltage at 20°C and less than 100 mA at 65°C; well under 1 mA under normal cathodic protection voltage.
- Enclosure: Explosion-proof, hexagonal, nickel-plated brass; NEMA 6P and IP68 rated; suitable for indoor or outdoor, submersible or non-submersible applications.
- Temperature Range: Class and Division system: -45°C to +85°C (-49°F to +185°F); Zone system: -20°C to +60°C; EAC version: -45°C to +85°C.
- Electrical Connection: Enclosure is the positive (+) terminal; single #4 AWG (approximately 25 mm²) conductor exiting the side of the enclosure is the negative (-) terminal.
- Mounting Hardware: Standard 3/8"-16 blind tapped mounting hole; optional 5/16"-18, 8 mm or 10 mm.
- Energy Requirements: None. The device is totally passive.
- Number of Operations: Virtually unlimited under rated lightning or AC fault current conditions, provided operations are not immediately repetitive.
- Certifications: UL and C-UL; Class I, Division 1, Groups B, C and D; Zone 1, Group IIB + H₂; ATEX and IECEx.
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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.
