Ten LV distribution boards in one delivery: from 100 to 1600 A

The task

The customer needed not "a switchboard" but the entire low-voltage distribution of the site as one delivery: the incomer, the distribution sections, and separate boards for process equipment and metering. Three requirements shaped the work:

• One line-up, one envelope. The panels had to stand in the room as a single row — same 2100 mm height and the same plinth, despite different widths and different ratings.
• A tenfold spread of rated current. One delivery contains both a 1600 A main incomer and a 100 A board. That means different busbar work, different apparatus and different weights — but one and the same operating logic.
• Metering at every incomer. The panels were prepared for both revenue and technical metering: current transformers with the calculated ratios, space for the meter, test terminal blocks.

The solution

We built a set, not a pile of enclosures: designed it, manufactured the enclosures, installed the apparatus, labelled and issued passports for every panel at our own factory in Odesa.

• A single structural design. All panels are 2100 mm high and 600 mm deep on a 100 mm plinth; only the width varies with the contents: 900 mm for a standard panel, 1500 and 1800 mm for sections with a double set of outgoing ways, 2400 mm for the 1600 A incomer. The exception is the wall-mounted ЩР-Т board at 1200 × 600 × 300 mm.
• The 1600 A incomer. A 1600 A switch-disconnector, busbars sized for the full current and a dedicated compartment — panel ВРП-9, weighing 360 kg.
• One component series across the whole delivery. Switch-disconnectors and "1-0-2" changeover switches for supply transfer, moulded-case circuit breakers on the outgoing ways, modular breakers on the small circuits, surge protective devices in every panel, and a residual current breaker where a socket circuit is present. One apparatus manufacturer across all ten panels means identical spares and identical servicing for the operator.
• Metering. Current transformers of 400/5, 250/5 and 150/5 with accuracy class 0.5 and serial numbers recorded in the passports, a voltmeter with a phase selector in every panel, mounting space for the meter, and a test terminal block.
• Surge protection — an ETITEC surge arrester in every panel, including the wall-mounted board.
• Documentation. Each of the ten panels has its own passport with a factory serial number (No. 173904–173913) and the order code, plus a metal rating plate on the enclosure. The number on the plate matches the number in the passport: on site a panel can be identified without consulting a paper archive.

Figures (from the passports)

Low-voltage distribution boards, order Э-24-440, 2025

Parameters common to the whole delivery:

The series product card: Main distribution boards (ВРП), Low-voltage switchgear up to 5000 A, LV switchgear cabinets (РУНН).

Photo report from production

We will build to your diagram

We will cost a set of LV distribution boards from your single-line diagram. Incomer, distribution sections, metering, process boards — from the diagram to factory testing, with a passport and a rating plate for every panel. Send the single-line diagram or a completed questionnaire and an engineer will size the set. → [enquiry form]