The TRANBERG® TEF 1060 high voltage enclosure system is a range of Ex eb junction boxes in acid-resistant stainless steel AISI 316L for 1.1 to 11 kV, developed and manufactured at the R. STAHL Tranberg factory in Stavanger. Two internal systems are used: A-block spacers with terminals for loads up to 100 A, and copper bus-bar solutions of type R, C and G with Ex-certified isolators for loads up to 2100 A. The standard sizes listed here are delivered on inquiry, and every solution can be customised in size, entries and equipment up to 11 kV. Solutions with optional specifications are subject to unit verification or field certification.
Application
- Splicing and distribution of high voltage cables in hazardous areas, zone 1, zone 2 and safe area
- Motor feeders, transformer connections and distribution from 400 V up to 11 kV, AC or DC
- Offshore, onshore and marine installations in stainless steel
Features and benefits
- A-block: compact and flexible, up to 100 A, terminals up to 50 mm² (35 mm² with ferrules), safety cover IP2X, padlock facility, hinged door
- Copper bar type R: one cable in and out per phase, up to 300 mm²; type H: multiple cables per phase; type G: compact with Ex-certified isolators, up to four cables per phase, 50 kA short-circuit withstand
- Copper earth bar on spacers, earthing studs on enclosure and gland plates or MCT frame
- Bottom side entries as standard; Tranberg Ex cable glands, MCT-G frame, enclosure heater, cam locks and tinned copper bars as options
Technical data
| Marking | II 2 G Ex eb IIC T4, T5, T6 |
|---|---|
| Material | Stainless steel AISI 316L / EN 1.4404, bright chemical dip |
| Ingress protection | IP66; safety cover IP2X on A-block solutions |
| Voltage | 1.1 kV to 11 kV (400 V to 11 kV for copper bar solutions) |
| Current | A-block up to 100 A; copper bar up to 2100 A |
| Ambient temperature | −20 °C to +40 °C; −50 °C to +60 °C with silicone gasket |
Approvals and certificates
- IECEx PRE 14.0001
- PRESAFE 14 ATEX 4124
- EN 60079-0:2012, EN 60079-7:2007, IEC 60079-0:2011, IEC 60079-7:2011
Selecting the right enclosure
Choose the A-block solution for loads up to 100 A: splice boxes join three phases, distribution boxes split two phases, with terminals of 4, 10 or 35 mm². For higher currents, choose the copper bar solution by type and rated current. All high voltage enclosures are quoted on inquiry, and other dimensions can be supplied. Cable glands are found under TEF E204/622; low voltage junction boxes under TEF 1058.
