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Step-down transformer boxes, type YATP

Step-down transformer boxes, type YATP

General information

Boxes with a step-down transformer of type YaTP (Ukr. ЯТП) are designed for supplying lighting networks with reduced alternating current voltage of 36 (12, 24) V with a power of not more than 250 VA, as well as for supplying portable lighting fixtures and power tools at 36 (12, 24) V alternating current at a frequency of 50 Hz.

The devices are designed for installation on a vertical surface. Rated operating mode — continuous. Climatic design U3 per GOST 15150-69. Degree of protection — IP20 per DSTU EN 60529:2018.

The boxes comply with the requirements of DSTU EN 61439-1 and TU U 27.1-40132794-003:2016.

Main technical characteristics

Enclosure size code and designation Total continuous permissible load current, A Rated voltage of the step-down transformer, V Rated power, VA Number of cable glands, pcs.
610 YaTP 0,25-12 18,9 220/12 250 2
610 YaTP 0,25-24 9,5 220/24 250 2
610 YaTP 0,25-36 6,3 220/36 250 2
610 YaTP 0,25-42 5,5 220/42 250 2

Dimensions

Step-down transformer boxes, type YATP — Dimensions

Diagram grid

Step-down transformer boxes, type YATP — Diagram grid

Description and purpose

The YATP box is a ready-made device with a step-down transformer of the 0.4 kV voltage class that converts the 220 V mains supply into a safe voltage of 12, 24, 36 or 42 V for lighting and portable power tools in damp and hazardous locations (basements, inspection pits, boiler rooms, workshops). We produce various power ratings, but the base and most popular one is 250 VA. It includes an enclosure, a single-phase transformer (type OSO), input and outgoing-line circuit breakers, and a socket outlet for portable equipment. LK Energy is a manufacturer of switchgear equipment from Odesa (since 2005); most often we supply ready-made products from stock or to order per your technical specification.

Technical data sheet (PDF) ↓Questionnaire for sizing →

Questions & answers

FAQ

What is a YATP box for and where is it installed?
The YATP ensures human safety: in damp premises, basements, inspection pits, boiler rooms and metal tanks, a voltage of 220 V is hazardous. The box steps down 220 V to a safe 12, 24, 36 or 42 V to power lighting and hand tools. It is mounted on a vertical surface and is rated for continuous operation.
Which power rating should I choose?
YATP units are produced in various power ratings, but the base and most common one is 250 VA (size designation 610 YATP 0.25). This rating is sufficient for typical lighting and portable equipment. If you need a different rating or a non-standard design, we select it according to your technical specification.
Which output voltage should I choose: 12, 24, 36 or 42 V?
It depends on the equipment: 12 V is the most common for garages and basements (automotive lamps, LED strips); 36 V / 42 V is the standard for industrial facilities under safety regulations; 24 V is for specific equipment. The input is always 220 V, 50 Hz.
What is included in the scope of supply, and is it a ready-made product?
Yes, it is a device ready for operation. It includes: a metal enclosure (IP20), a single-phase step-down transformer of type OSO, circuit breakers (an input one and one for the outgoing line), and a plug socket for connecting portable equipment. We most often supply ready-made products; non-standard versions are made to order.
Which standards does the YATP comply with?
The boxes comply with DSTU EN 61439-1 (Ukrainian national standard) and TU U 27.1-40132794-003:2016 (technical specification). Climatic design category U3 per GOST 15150-69, degree of protection IP20 per DSTU EN 60529:2018.

Price request:
Step-down transformer boxes, type YATP

Send us your single-line diagram or specification — we will estimate the configuration, lead time and price. Preliminary estimate within 24 business hours.

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Request a quote

Send your single-line diagram or specification to info@lk-energy.com.ua — or we will contact you and ask.

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