LL-114/T3, LL-214/T3, LL-221/T3, LL-133/T3, LL-233/T3, LL-243/T3
IMPA Code:33 19 01 - LL-133/T3, 33 19 02 - LL-233/T3
The Wolf ATEX 400VA Transformer is a high-capacity, professional ex-proof power unit designed to supply temporary lighting and electrical systems in hazardous areas. Offered by IST Safety Ltd, the official distributor of Wolf, this 400VA capacity unit allows for the simultaneous powering of more luminaires or devices compared to the 250VA model. It steps down high voltage to safe operating levels such as 24V or 110V to protect personnel from electrical shock risks, especially in wet, damp, and metallic conductive environments.
Certified for Zone 1/21, the transformer features a robust GRP (Glass Reinforced Polyester) enclosure that is impact-resistant and corrosion-proof, ensuring reliable performance in the most demanding industrial conditions. Its portable design and compact footprint provide significant ease for rapid installation and logistics across a wide range of applications, from refineries to large-scale tank cleaning operations.
The Wolf ATEX transformers have a CE mark and are safe to use in places with explosive gases (Zone 1) and dust (Zone 21). They can be used where certain temperatures are allowed. These transformers are certified by both ATEX and IECEx for safety.
For Output Power ≤ 400VA
II2 GD Ex d e IIC T3 Gb
Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +35°C)
For Output Power ≤ 320VA
II2 GD Ex d e IIC T3 Gb
Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +50°C)
For Output Power ≤ 400VA
II2 GD Ex d e IIC T3 Gb Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +30°C)
For Output Power ≤ 320VA
II2 GD Ex d e IIC T3 Gb Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +42°C)
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ATEX 400VA Transformer |
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PRODUCT REFERENCE |
LL-114/T3 |
LL-214/T3 |
LL-221/T3 |
LL-133/T3 |
LL-233/T3 |
LL-243/T3 |
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PRODUCT DESCRIPTION |
GRP |
Stainless Steel |
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110V:24V |
230V:24V |
230V:110V |
110V:24V |
230V:24V |
230V:110V |
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CODE |
For Output Power ≤ 400VA II2 GD Ex d e IIC T3 Gb Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +35°C) For Output Power ≤ 320VA II2 GD Ex d e IIC T3 Gb Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +50°C) |
For Output Power ≤ 400VA II2 GD Ex d e IIC T3 Gb Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +30°C) For Output Power ≤ 320VA II2 GD Ex d e IIC T3 Gb Ex t IIIC T195°C Db IP66 (-20°C ≤ Ta ≤ +42°C) |
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TYPE OF PROTECTION |
'e' increased safety, 'd' flameproof |
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AREA OF CLASSIFICATION (GAS) |
Zones 1 and 2, Gas groups IIA, IIB and IIC |
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TEMPERATURE CLASS (GAS) |
T3 |
T3 |
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AREA OF CLASSIFICATION (DUST) |
Zones 21 and 22, Dust Groups IIIA, IIIB and IIIC |
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MAX. SURFACE TEMPERATURE (DUST) |
T195°C |
T195°C |
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AMBIENT TEMPERATURE |
400VA -20°C to +35°C 320VA -20°C to +50°C |
400VA -20°C to +30°C 320VA -20°C to +42°C |
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CERTIFICATE |
ATEX - LCIE02ATEX6248X IECEX - LCI 04.0016X |
ATEX - LCIE02ATEX6118X IECEX - LCI 11.0008X |
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ENCLOSURE |
Glass reinforced polyester (GRP) enclosure, marine grade (316L) stainless steel skid |
Marine grade (316L) stainless steel enclosure and skid |
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POWER |
320 / 400VA |
320 / 400VA |
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VOLTS IN |
110V ac +6% - 10% |
230V ac +6% -10% |
110V ac +6% -10% |
230V ac +6% -10% |
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INPUT CABLE |
15m SY cable 2.5mm² with ATX 110V / 230V 2P+E plug fitted as standard |
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VOLTS OUT |
24V |
110V |
24V |
110V |
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SOCKET ARRANGEMENT & CONFIGURATION |
4 output sockets, ATX 110V / 24V 2P+E as standard |
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2 sockets on each unit side |
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DIMENSIONS |
504 x 465 x 285mm (L x W x H) |
512 x 562 x 260 mm (L x W x H) |
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INGRESS PROTECTION |
IP66 |
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WEIGHT |
21 kg |
28 kg |
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What is ATEX and what does exproof mean? The ATEX directive is a set of European Union standards that define the safety requirements for equipment used in hazardous areas with explosive atmospheres. Exproof (Explosion-proof) refers to protection methods designed to prevent explosions by inhibiting the formation of sparks or electrical arcs in environments containing flammable gases, dust, or vapors. To ensure life and property safety in industrial facilities, the use of ATEX-certified exproof devices is a legal requirement.
ATEX Zone coding is a technical classification based on the frequency and duration of the occurrence of an explosive atmosphere in a given area. While the terms Zone 0, 1, and 2 are used for risks originating from gas, vapor, and mist; the codes Zone 20, 21, and 22 are designated for environments containing combustible dust. This classification is a legal standard that determines the required Equipment Protection Level (EPL) for devices. Accurate zone identification both optimizes operational costs and minimizes occupational safety risks.
In addition to ATEX certification, some projects may also require the IECEx Certification System (International Electrotechnical Commission Explosive Atmospheres System) certification. IECEx is an internationally recognized conformity assessment system for equipment intended for use in explosive atmospheres.
While ATEX is a European Union directive and a legal requirement within the European market, IECEx is a globally accepted certification system, widely preferred in regions such as the Middle East, Asia, and Australia.
From a technical perspective, both ATEX and IECEx are based on similar standards (e.g., the EN/IEC 60079 series). However:
Therefore, while ATEX certification may be sufficient for certain projects, international tenders or critical industries such as oil & gas often prefer or require products that are certified to both ATEX and IECEx standards.
The appropriate certification should be determined based on the project location, client requirements, and application area.
