- Roof_Top_1.JPG
- Workshop.jpg
- Roof_Top_2.JPG

Metro - C.E.V.

For cabinets and enclosures in outdoor or remote areas where equipment rooms are unavailable or undesired – for non-extreme environments

The Metro unit maintains internal cabinet temperature by allowing controlled external ventilation and internal circulation to avoid ‘hot spots’. This gives the housed electronics and batteries the ability to work at their maximum performance levels through seasonal weather variations.

The Metro's are manufactured to suit any type of cabinet/enclosure. They provide an ideal environment for your equipment that’s reliable, secure, economical and safe.

External vents are fitted with rain hoods and filters to protect against weather, dust and insects. The upper vent allows ventilation to prevent hydrogen build-up.

Ventech recommends the use of Polyester or Polycarbonate enclosures or cabinets depending on specific installation requirements and environmental conditions.

Ideal for:

Remote cell sites - airport runways - traffic lights - weather tracking stations - lighthouses - security systems - basements - roof tops - car parks

Features:

Test Results 150W Heat Load

 

- 150W_ver_2.JPGWith a heat load of 150 watts inside the cabinet and the venting system set to operate at 25°C it can be seen that the internal cabinet temperature is maintained well above the ambient temperature until the venting system operates. 

 

The black dotted line tracks TAMBIENT and TCABINET as if there were no restrictions to heating or cooling. 

Test Results 265W Heat Load

 

- 265_ver_2.JPGWith an internal heat load of 265 watts and the venting system set to operate at 25°C, the operational temperature shape of the cabinet is clear. TMAX 24.2°C, TMIN 5°C gives a - Delta_Sign.jpgT3 of 19.2°C where temperatures are reasonably constant. Below TMIN, cabinet temperatures are still maintained well above the ambient temperature. 

 Insulation

Cabinets are insulated with a thermal insulation material made from Polysafe, an environmentally friendly polyolefin foam, to control heat loss, prevent condensation, to reduce noise and vibration.

External Vents

External vents are fitted with rain hoods and filters to protect against weather, dust and insects. The upper vent allows ventilation to prevent hydrogen build up.

Cabinets

Ventech recommends the use of Polyester or Polycarbonate enclosures or cabinets depending on specific installation requirements and environmental conditions.

Ideal Locations

Remote Cell Sites - Airport Runways - Traffic Lights - Weather Tracking Stations - Lighthouses - Security Systems - Basements - Roof Tops - Car Parks

Security

The outer cabinet is accessed by key entry and has no external screws or fittings. This provides a secure environment for your equipment.

Patents

NZ2004/000173

Patent Co-operation Treaty

Granted

527368

New Zealand

Granted

2004301898

Australia

Granted

ZL200480025212.X

China

Granted

2419745

United Kingdom

Granted

2534446

Canada

Granted

7604534

USA

Granted

2006/01868

South Africa

Granted

 

Specifications:

Circulation and External Venting Unit

- cev_drawing.gif

Open State
 
Internal enclosure temperature is influenced by
weather conditions and from heat generated by
housed components. When ambient temperatures
are high or peak load is reached, the CEV
allows air to pass through components via the
lower vent and filter, then in to the atmosphere
lowering enclosure and component temperature.
 
 
 
 
 
 
 
  

 

- cev_drawing2a.gif                  Closed State
 
When component load is less or ambient temperatures
become cooler the thermostatically controlled
CEV will operate and close. This traps any
remaining component heat in the enclosure to
maintain temperature. The CEV circulates air
through the enclosure providing an average
internal air temperature for the control
thermostats and alleviates component hot spots.
 
 
 
Cabinet Specifications

Material 

Polycarbonate, Stainless Steel, Sheet metal (dipped coat primed & powder coated), Polyester & Aluminium Will depend on customer individual specifications and requirements 

Protection Category 

IP 56 to EN 60 529/10.91 IP 66 Complies with NEMA 12. For ES 5080.500 Complies with NEMA 12. (Will depend on customer individual specifications and requirements) 

Thermostat Specifications 

• Permissible contact load AC-5 (0.2)1)A DC=max. 20W (1)=Inductive load at cos = 0.6 • Setting range 50 – 100% relative humidity • Dimensions 71 x 71 x 33.5 mm • Switching difference approx. 4% • A broad voltage spectrum i.e. just one model covers 24 to 230 V • Time-saving connection technique using a terminal strip with a screw connection from the outside • Flexiable mounting on a vertical or horizontal 35 mm support rail to EN 50 022, and snap fasting in the TS/ES enclosure section using the supplied adaptor

Fan Specifications 

Axial Fan Unit 105/120 cubic metres of air an hour Temperature range = 10 degs to +55 degs Noise Level = 46/49 dB (A) Protection Catagory = IP54              Colour RAL7035

Insulation Specifications 

Material 

Closed cell polyolefin form 

Density 

(DIN 53571) 25Kg / m³ 

Thermal Conductivity 

(JIS A 1413) @ 20C 50 – 70% R.H = 0.032 W/m.K 

Working Temperature 

-80º to 100ºC 

Noise Reduction 

Co-efficient 0.15 (AS1045-1971) 

Chemical Resistance 

Water (unaffected) Sea water & brine Soaps & detergents Diluted acids Diluted detergents / alkalis Alcohol Ketones Esters 

Tensile Strength 

(DIN 53571) Lengthwise 4.1 kPa / mm² Crosswise 3.0 kPa / mm² 

Fire Ratings

Fire Test Standard

AS 1530.3 (1989) 

BS 476 part 6

BS 476 part 7

BS 476 parts 6&7

FMVSS 302

Foil

Ignitability:

Spread of flame

Heat evolved index

Smoke develop index

F.P.I Index 

Class 1

Class 0

Pass

0

0

0

0-1

7.9

Filter Mat Specifications

Made of chopped-fibre mat with a progressive structure

Temperature resistant to 100ºC

Self extinguishing category F1 to DIN 53 438

Reliable filtering of virtually all types of dust from a particle size of 10µm

 

 

 

Ventech are committed to creativity, innovation and exceeding client expectations. Contact us to find out more.