Explore our case studies, blog articles, and upcoming events — industry perspectives and engineering insights from the Nahu Group (NAHU Electric) team.
Field installations of NAHU instrument transformers and metering cabinets — substation commissioning, distribution metering, and pole-mounted switchgear deployments worldwide.
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In-depth technical articles on current transformer selection, wiring, sizing, accuracy classes, and best practices for new installations and retrofits.
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International trade shows, industry expos and company milestones — where to meet the Nahu Group (NAHU Electric) team and see our latest products.
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Discover how to choose the right voltage transformer in the Philippines. Compare transformer types, configurations, ratings, accuracy, and key selection factors.
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A current transformer steps high current down to a safe, measurable secondary signal. How CTs work, the main CT types, and how to choose and install one.
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There is no single 11 kV ring main unit price list. What drives RMU cost - switch type, enclosure, protection, testing, quantity - and how to read a quotation.
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A supplier-selection checklist for utility, EPC and panel-builder buyers: reading IEC 61869 type test evidence, verifying factory capability, and the risk signals that give away a trader.
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A CT meter box houses the CTs, test terminal block and meter for a CT-operated supply. What it contains, how it is wired and sealed, and what to specify.
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EMC certification explained: what electromagnetic compatibility testing covers, the IEC 61000 and CISPR standards behind it, and how it differs from CE marking.
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Split-core current transformer retrofit guide: clamp the LMZK-10 around live busbars without breaking the primary circuit, metering or protection classes.
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Learn how to specify a medium voltage current transformer: indoor vs outdoor types, cast-resin construction, metering and protection cores, and a complete specification checklist for 3-40.5 kV projects.
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FZN25-12 vacuum load break switch explained: switching duties in 12 kV ring main units, FZRN25-12 fuse-combination protection, 630 A ratings, manual and electric operation, grounding interlock.
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How to choose the current transformer ratio (CT ratio) for metering and protection: standard primary ratings, 5 A vs 1 A secondary, saturation, and a worked 600/5 A example.
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How to select a voltage transformer: system voltage and ratio, 100 V and 100/√3 V secondaries, accuracy classes 0.2/0.5, rated burden, earthing and the 3×ZNOLP-10M export equivalent for Russian-standard panels.
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Explore high-voltage electrical equipment essentials, including safety, insulation materials, and energy transmission. Learn about selection and application in Vietnam.
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Discover the benefits of used vacuum circuit breakers—cost-effective, reliable, and eco-friendly solutions. Perfect for various needs with warranties from trusted suppliers.
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Discover the importance of phase changeover switches for seamless power transfer. Learn how they prevent outages and ensure safe maintenance in multi-phase environments.
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How vacuum interrupters extinguish the arc in microseconds, the main VCB types for 12–40.5 kV networks, and the ratings that matter when you specify one.
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How overhead line fault indicators detect short-circuit and earth faults, the main types, and how they cut outage restoration time from hours to minutes.
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How zinc-oxide arresters clamp overvoltage in nanoseconds, external-gap, drop-out and through-type designs, and how to select the right arrester class.
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