Page 31 - Energize November 2021

NEWS

Pratley Ex d Flameproof Cast Iron Junction reducers and blanking plugs (all available in Pratley’s extensive range of IECEx Ex d rated
Boxes are available in the following sizes products). Size 4 has an M40 entry while Size 2 has an M25 entry. To accommodate any
and configurations: unused entries, these junction boxes are available in a 1-by-2 way configuration (a Size 1 with
• Size 1: Rated Ex d for Group I mining two open entries), a size 1-by-3 way T-type configuration, or a size 1-by-4 way configuration.
(coal dust and methane gas) as well as If you have a four-way enclosure and only want to use two of the entries, then Pratley
Group IIC gases (hydrogen, acetylene flameproof blanking plugs can be fitted. These blanking plugs are flameproof-certified
and carbon disulphide) as well as and will therefore uphold the integrity of the flameproof enclosure, both in terms of its
Group III for dust (combustible flyings, flameproof properties and water and dust ingress properties (IP rating).
combustible dust and conductive dust).
A gasket on the flange prevents dust Main features of the Pratley Ex d Flameproof Cast Iron Junction Boxes:
ingress. • A robust, fine-grained, iron casting with precision machined entries.
• Size 2: These are quite a lot larger • Suitable for both mines and surface application.
in size and are rated for Ex d I/ IIB + • Complete with 4 x zinc-plated Grade 12.9 steel fasteners.
H2, meaning coal dust, methane and • Fitted standard with both internal and external earthing facilities.
hydrogen. • Epoxy powder coated in orange.
• Size 4: The largest of the three • Can be fitted with either Pratley non-sparking end connectors or Pratley Kwikblok®
enclosures is for Ex d I/IIB, which is coal terminals
dust, methane and ethylene. • Flameproof blanking plugs are available.
• Fully certified to SANS and IECEx Standards for flameproof installations in Group I, IIB,
In terms of the entry points on the IIB+H2, IIC and IIIC environments.
enclosures, Size 1 has an M20 entry
suitable for Size 0 and Size 1 cable glands. Contact Sales, Pratley, Phone 011 955-2190, sales@pratley.co.za
These are precision-machined, threaded www.pratleyelectrical.com
entries that can accept flameproof entry https://www.facebook.com/PratleySA/
devices such as cable glands, adaptors, https://twitter.com/PratleySA

The world’s only CAT III 1500 V current clamp or AC through the clamp jaw. The iFlex
flexible current probe extends AC current
measurements up to 2500 A and can be
twisted through extremely small spaces and
provide accurate current measurements.
The Fluke 393FC has a thin jaw, making
access to cables in crowded combiner
boxes easier. The test leads are rated to
CAT III 1500 V.

Other key functions:
• IP54 rated, ideal for work outdoors on
solar arrays and wind power systems
• DC power measurement, showing
readings in kVA
• Audio polarity indicator helps prevent
accidental misconnections
• Visual continuity turns provide a bright
green light in the display, ideal when
working in dark and noisy environments
• Logging and reporting of test results via
Fluke Connect software
he Fluke 393FC CAT III 1500 V True-rms clamp meter with iFlex is designed for
technicians who work in DC environments up to 1500 V. Typical applications include Click here to watch a promotional video
Tsolar arrays, wind power, electric railways, battery banks for uninterruptible power about the Fluke 393FC
supplies at data centres, etc. Contact Comtest, Phone 010 595-1821,
The Fluke 393FC clamp will measure up to 1500 V DC, 1000 V AC, and up to 999,9 A DC sales@comtest.co.za, www.comtest.co.za

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