The DEIF 2EVQ Double Voltmeter stands as a premium-grade switchboard analog pointer instrument engineered and manufactured by DEIF Group (Denmark)—the global benchmark in marine power control and measuring electronics. This specialized device features a unique, highly integrated hardware architecture housing two fully independent moving iron systems operating side-by-side within a single robust enclosure. This innovative layout allows operators to seamlessly observe and compare the precise voltage amplitudes of two distinct power supplies simultaneously, without requiring cumbersome phase selector switching. The most critical application of the 2EVQ series involves overseeing manual or automated synchronization protocols for generator aggregates, where even minimal voltage discrepancies between an incoming offline generator and a live energized busbar can trigger catastrophic reverse-current surges, crashing the ship's grid or permanently fracturing the generator core.

Formally certified by elite international maritime classification societies including DNV-GL, ABS, BV, LR, and RINA, the DEIF 2EVQ double voltmeter is specifically designed to perform flawlessly under the most volatile environmental conditions found aboard ocean-going vessels and offshore oil platforms. The external housing is molded from high-impact, flame-retardant industrial polymers, paired with an anti-glare tempered glass lens to ensure distortion-free readability even under direct sun exposure or acute viewing angles. Internal eddy-current or fluid dampening mechanisms within the needle assemblies effectively neutralize industrial structural vibrations generated by heavy marine diesel engines, ensuring stable pointer alignment and a decades-long operational lifespan without demanding periodic calibrations. The 2EVQ indicator remains the definitive choice for electrical engineers specifying Main Switchboards (MSB), automated Power Management Systems (PMS), and emergency backup grids requiring near-absolute operational continuity.

• Manufacturer: DEIF
• Country of Origin: Denmark
• Product Type: Analog Pointer Switchboard Instrument - Double Voltmeter
• Model Designation: 2EVQ
• Measurement Mechanism: Dual independent moving iron systems
• Accuracy Classification: Class 1.5 complying with international standards IEC/EN 60051
• Pointer Deflection Angle: Standard 90-degree quadrant arc
• Operational Frequency Range: Nominal 50 Hz or 60 Hz (Capable of handling wide ranges from 15Hz to 400Hz depending on variant)
• Input Voltage Configurations: 2 x 100V, 2 x 110V, 2 x 230V, 2 x 400V, 2 x 500V AC (Or via step-down Potential Transformers - PT)
• Scale Graduations: Customizable to fit system parameters (e.g., 0-150V, 0-300V, 0-500V, 0-600V AC)
• Environmental Protection Rating: IP52 for front panel display, IP20 for rear terminal wiring according to IEC 60529
• Overload Capacity: 1.2 times nominal voltage continuously; 2 times nominal voltage short-term for 5 seconds
• Dielectric Isolation Test Voltage: 2kV AC for 1 minute duration
• Operational Temperature Limits: -25°C to +60°C (Certified for tropical maritime climates)
• Enclosure Dimensions: Standardized 96 x 96 mm or 144 x 144 mm bezel profiles
• Standards & Class Approvals: CE marked, RoHS compliant, Industrial UL, DNV-GL, ABS, Lloyd's Register (LR), Bureau Veritas (BV)