Solar Photovoltaic System-Solution

Standards Compliance & Key Advantages

Kerun’s design and testing system strictly benchmarks major international and domestic standards (such as IEC 60076 / GB/T 1094 for transformer standards and IEC 62271 for switchgear standards), and we can implement environmental adaptation packages for high temperature, coastal salt mist, high altitude, and sandy/dusty conditions as required. Backed by years of experience in grid and new-energy projects, we deliver advantages including more accurate solution matching, tighter manufacturing process control, more consistent quality, and faster response—helping customers achieve higher grid-connection reliability, lower operational risk, and more predictable life-cycle cost.

From Factory Integration to Site Energization

To protect the project schedule in a PV site, the solution is built around factory integration rather than on-site assembly. The oil-immersed transformer is completed with strict checks on sealing, accessories, terminals, and safety details, then integrated with the SF6 RMU and the 0.8kV LV switchboard (4000A busbar) inside a 20ft containerized substation (Model YBW-6300(3150)/33(11)-0.8).

Once delivered, the unit is positioned on a prepared foundation, followed by MV/LV cable termination and earthing connection. With most wiring and functional verification completed before shipment, commissioning becomes faster and more predictable—focused on interlocks, insulation verification, and protection setting—supporting safe energization and quick grid connection under humid and tropical conditions such as Malaysia.

20ft Containerized Substation Solution

Model: YBW-6300 (3150) / 33 (11) – 0.8
Designed for fast deployment, high reliability, and low on-site workload—especially for PV plants and energy storage systems in humid and tropical environments.

A. Project & Supply Overview

What Makes This Solution “Project-Friendly”

Instead of shipping separate components and leaving complex integration to the site, we focus on factory pre-integration: MV RMU + transformer + LV switchboard + auxiliaries are assembled, wired, and function-checked in-house. This reduces:

• On-site installation time

• Construction and commissioning uncertainty

• Coordination workload between multiple subcontractors

In short: we deliver certainty for your energization and grid-connection milestones.

B. Main Electrical Ratings (Per Unit)

Notes: Final short-circuit levels, protection settings, and feeder arrangement are confirmed by the single-line diagram (SLD) and grid requirements.

“Factory-Integrated” Means Real On-Site Savings

We don’t treat the factory as a production stop—we treat it as the first commissioning site. Before shipment, we verify:

• Mechanical interlocking logic (MV)

• LV functional checks and circuit continuity

• Earthing integrity and bonding points

• Ventilation / anti-condensation readiness

• Labeling, terminal identification, and maintainability access

This approach is built for EPC reality: less rework, fewer surprises, faster energization.

C. Oil-Immersed Transformer (Technical Data)

Built for Humid & Tropical Environments

In PV + BESS sites, moisture is a silent risk. Our design focuses on long-term stability through:

• Anti-condensation heaters + ventilation strategy

• Clear separation of MV / transformer / LV compartments

• Robust sealing approach and cable entry treatment

• Optional IP and anti-corrosion upgrades for coastal or high-humidity zones

We design not just for “passing tests,” but for stable operation after months and years on site.

D. MV Section – SF6 RMU 

Safety & Maintainability: Designed for Real Operators

We pay attention to what makes equipment truly “usable” on site:

• Clear interlocks to prevent wrong switching sequences

• Logical access and maintenance clearance inside compartments

• Visible labels, terminal IDs, and functional markings

• Earthing points and bonding straps placed where technicians actually need them

Good equipment is not only strong on paper—it is easy to operate correctly.

E. LV Section – 0.8kV PCS Busbar & Switchboard (4000A)

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