*myarchiexpo

Ex fans

Product catalog summary

Introduction
The document provides an overview of explosion-proof fans compliant with the 94/9/EC (ATEX 100a) directive, which standardizes explosion protection across the EU. It applies to non-electrical equipment like fans connected to electrical devices such as motors. The fans are designed, manufactured, and tested according to standards including EN 1127-1, EN 13463-1, EN 13463-5, and EN 14986.

Specifications and Standards
Fans are categorized by type, such as centrifugal, roof, axial, duct, and tube fans, designed for use in potentially explosive atmospheres. The document outlines equipment marking, detailing the equipment group, category, and safety measures for different zones and atmospheres.

Marking and Safety Measures
Equipment is marked by group and category, with specific safety measures for different zones. Zone 0 requires two independent protective measures, while Zone 2 is for normal operation. Types of protection include constructional safety (Ex c), compression proof (Ex d), increased safety (Ex e), and intrinsic safety (Ex i).

Zones and Temperature Classes
Explosive atmospheres are divided into zones based on occurrence likelihood. Zone 0 is for continuous presence, Zone 1 for normal operation, and Zone 2 for rare occurrences. Rosenberg fans are suitable for Zones 1 and 2, with temperature classes ranging from T1 to T6.

Safety Technical Numbers
A table provides safety technical numbers for combustible gases and vapours, listing compounds, ignition temperatures, and corresponding temperature classes, crucial for selecting appropriate fans.

General Notes
Additional notes include classifications of explosion-proof appliances according to EN 60079 and related standards, emphasizing the importance of selecting the correct type of protection to prevent ignition.

General Overview
The document provides technical specifications and guidelines for Rosenberg fans designed for potentially explosive atmospheres, including details on mechanical and electrical components, motor protection, and speed control mechanisms.

Specifications
Fans are manufactured to minimize ignition hazards and equipped with guards to prevent foreign particles from entering, meeting EN 294 requirements.

Electrical Components
Motor data is stamped on the type nameplate and included in the EC type examination certificate. Motors may have a higher rated voltage than the fan voltage for a favorable speed ratio.

Motor Protection
External rotor motors have integrated PTC thermistor temperature sensors for precise detection of abnormal conditions. Standard motors require upstream motor protection switches.

Motor Versions
Rosenberg fans come with external rotor motors (IP44, insulation class F) or standard IEC motors (IP55, insulation class F), complying with European Standards EN 500xx and 60079-xx.

Speed Control
Speed control is achieved through voltage reduction using transformer controllers. Regular external rotor motors with protection type "e" cannot be used with frequency converters, while standard motors can be controlled by frequency converters with protection type "d" or "de".

Performance Data
The document includes performance curves and technical data for specific fan models, detailing parameters such as rated voltage, power consumption, fan speed, and sound levels.

Key Standards and References
The document references several standards, including DIN 57165, EN 50014, EN 50019, and VDMA 24169, as well as PTB testing conditions.

Specifications

Casing made of galvanized sheet steel.
Forward curved impeller.
Asynchronous external rotor motor.
Protection class IP44; insulation class F.
Side cable connection.
Motor protection by triple PTC resistors integrated into the winding.
Material pairing: impeller made of galvanized steel; inlet cone made of copper or conductive PVC.

Technical Data

Various models including ERAD 225-4 Ex, ERAD 250-4 Ex, ERAD 280-4 Ex, ERAD 280-6 Ex, ERAD 315-4 Ex, ERAD 315-6 Ex, ERAD 355-6 Ex, DRAD 225-4 Ex, DRAD 250-4 Ex, and DRAD 280-4 Ex.
Voltage: 400V (50Hz).
Power input (P1) ranges from 0.52 kW to 2.0 kW depending on the model.
Current (IN) ranges from 1.0 A to 4.0 A.
Speed (n) ranges from 730 min-1 to 1360 min-1.
Operating temperature (tR) up to 40°C.
Weight varies from 14 kg to 37.5 kg.
ATEX classification: II 2G c IIB T3 X or II 3G c IIB T3.

Sound Levels

Sound levels are provided for different frequencies (125 Hz to 8K Hz) and configurations (4-pole and 6-pole).
Sound pressure levels vary depending on the model and configuration.

Wiring Diagram

Color-coded wiring for connections: brown, blue, black, red, grey, orange, white, yellow-green.

Accessories

Various accessories are available, with references to specific pages for details.

Motor Protection
If the motor's winding temperature exceeds the maximum limit, the PTC opens the circuit, causing the mains contactor to drop and disconnect the motor. The fan can only be restarted using the 0-step of the controller after resolving the disturbance.

After Power Failure
Reactivation is only possible after switching to the 0-step.

Design
The motor protection switches are housed in a sturdy light grey plastic enclosure with protection class IP 54. They must not be mounted in an Ex area.

Type Code
MS D 1 K - Protective motor switches for three-phase alternating current, single-stage, with thermistor connection.

5-Stage Control Unit
Single-phase, 5-speed controller with mains contactor and monitor light for speed regulation of voltage-controlled motors/fans. The controller allows for five different speeds, with step 1 being the lowest and step 5 the highest. Suitable for group control, multiple motors can be connected if the total current does not exceed the controller's rated current.

Motor Control
Thermal contacts can be connected in series with the motor winding. If the winding temperature exceeds the permissible limit, the thermal contacts open, interrupting the circuit and switching off the motor/fan. After cooling, the circuit closes automatically, allowing the motor to restart.

After Power Failure
Automatic restart occurs after a voltage failure.

Design
RE 1.5, RE 3.2, RE 5, RE 6 models have a sturdy light grey plastic enclosure with protection class IP 54.

Type Code
R E 5 - Transforming speed controller for single-phase with a maximum current of 5A.

5-Stage Control Unit with Airflow Detector
Controllers of this design include a connection for an airflow detector and a magnetic gas valve, suitable for kitchen air extraction when gas devices are installed.

Motor Protection
Thermal contacts open if the motor/fan winding temperature exceeds the limit, disconnecting the motor from the mains. Restarting is only possible at the 0-position on the 5-step switch.

After Power Failure
Automatic restart occurs after power failure.

Design
RTE 1.5 (G), RTE 3.2 (G), RTE 5 (G) models have a sturdy light grey plastic enclosure with protection class IP 54. RTE 7.5 (G), RTE 10 (G) models have an aluminium die-cast base with a light grey plastic lid.

Type Code
R T E 5 (G) - Transforming speed controller with thermal contact and gas contact connection for single-phase with a maximum current of 5A.

5-Stage Control Unit with Room Thermostat
Single-phase controller with two five-step switches for speed regulation. The speed can be adjusted using a timer switch, room thermostat, or manual switch.

After Power Failure
Automatic restart occurs after power failure.

Design
RTRE 1.5, RTRE 3.2, RTRE 5 models have a sturdy light grey plastic enclosure with protection class IP 54. RTRE 7.5, RTRE 10 models have an aluminium die-cast base with a light grey plastic lid.

Type Code
R T R E 5 - Transforming speed controller with thermal contact and room thermostat connection for single-phase with a maximum current of 5A.

Specifications
The document details various types of control units and transformers used for speed regulation of motors and fans. It includes specifications for 5-stage control units, electronic controllers, and transformers for switch cabinet installation. The protection class for most enclosures is IP 54, with some transformers having IP 20.

5-Stage Control Units
These units are designed for three-phase motors and fans, allowing for speed regulation through a transformer. They feature a 5-speed controller with a mains contactor and monitor light. The units can switch between two different speeds using built-in 5-level switches. Motor protection is provided by thermal contacts that disconnect the motor if the winding temperature exceeds permissible limits. After a power failure, restarting is only possible from the 0-position on the switch.

Electronic Controllers
These controllers use phase angle control for continuous speed regulation of single-phase motors. They allow for the connection of multiple fans, provided the total current does not exceed the controller's rated current. Motor protection is achieved by connecting thermal contacts in series with the motor winding, which open if the winding temperature is too high.

Transformers
The document describes transformers for switch cabinet installation, available in single-phase and three-phase versions. They are autotransformers with 5 taps and are not short-circuit proof. The maximum ambient temperature is +40°C, and they conform to insulation class B and protection class IP20.

Design and Installation
The control units and transformers are available in various designs, including flush mount and surface mount options. The document emphasizes that controllers should not be installed in explosive areas.

Wiring Diagrams and Dimensions
The document provides wiring diagrams and dimensions for each type of control unit and transformer, specifying the maximum current and weight for each model.

ON/OFF Switch Specifications
The document describes ON/OFF switches of category AC-23, suitable for switching engines or high-inductive loads, compliant with DIN VDE 0660 part 100. It highlights the protection class IP 55 and applicable regulations for machine safety, including DIN VDE 0113 part 1 and EN 60204 part 1. The connection diagram indicates the operated condition of switching contacts with an 'X'.

Type Code and Specifications
The type code 'GS' is used for various models, each with specific power ratings, voltage, frequency, and contact configurations. For example, GS 1 has a 4kW capacity, IP55 protection, and operates at 230V, 50/60 Hz with 4 NO main contacts and 1 NO/1 NC auxiliary contact.

Safety Switches
Safety switches provide explosion protection according to CENELEC and IEC standards, suitable for Zones 1, 2, 21, and 22. They feature motor switching capacity AC 23, definite opening for main contacts, and can be padlocked in the 'OFF' position. These switches are marked with a signal orange label and offer high corrosion resistance.

Ex Area Switches
Switches for Ex areas, such as GS 5 Ex, are rated at 7.5kW, IP65, and 400V, 50/60 Hz. They include main and auxiliary contacts, with options for thermistor connections.

Temperature Control
The RTE-TR temperature control device for CompactAIR features a temperature range of 0-40°C, a switching voltage of 12V, and protection class IP42. It includes a text display for operational conditions and errors, along with external temperature probes.

Valve Units
Valve units for CompactAIR models 355WW and 356WW are briefly mentioned, with specific article numbers and screw specifications.

3-Way Valve Specifications
- Type: VRG 3 15/2.5, VRG 3 15/4
- Switching Voltage: 24V / 50 Hz

Duct Temperature Sensor
- Type: KTF
- Resistor: 10 kOhm at 25°C
- Measuring Range: -50 to +120 °C
- Tolerance: ±0.2°C from 0-70 °C
- Protection Class: IP 54
- Dimensions: 65×50×37 mm
- Pipe: 7×165 mm
- Description: NTC temperature sensor for gas media in ventilation and climate channels.

Room Temperature Sensor
- Type: WTF
- Resistor: 10 kOhm at 25°C
- Measuring Range: -50 to +90 °C
- Tolerance: ±0.2°C from 0-70 °C
- Protection Class: IP 20
- Dimensions: 75×75×25 mm
- Description: NTC temperature sensor with white plastic housing.

Outside Temperature Sensor
- Type: ATF
- Resistor: 10 kOhm at 25°C
- Measuring Range: -50 to +90 °C
- Tolerance: ±0.2°C from 0-70 °C
- Protection Class: IP 54
- Dimensions: 65×50×37 mm
- Description: NTC temperature sensor with white plastic housing.

PTC Thermistor Relay
- Type: TÜS 100/A
- Temperature Range: -20°C to +55 °C
- Mains Voltage: 220 V - 240 V
- Max Current: 6 A, 250 V
- Protection Class: IP21
- Dimensions: 75×22.5×110 mm
- Weight: approx. 150 g
- Description: Protects motors and equipment from thermal overload, compliant with DIN VDE 0660.

Ex Terminal Box
- Type: KK Ex
- Max Voltage: 660 V
- Temperature Range: -20°C to +40 °C
- Protection Class: IP54
- Description: Made of polyester resin, unused cable entries must be sealed.

Industry Temperature Sensors
- Types: RT 1, RT 2, RT 4
- Temperature Range: 0 - 40 °C (RT 1, RT 2), 0 - 35 °C (RT 4)
- Operating Differential: ±0.75 K (RT 1), ±1 K (RT 2, RT 4)
- Protection Class: IP 54
- Description: Various step configurations for industrial temperature sensing.

5-Step Switch
- Type: S5
- Rated Operational Current: 16 A
- Description: Suitable for switchboard installation, used with transformers.

Differential Pressure Sensors
- Types: PU 2, PU 5, PU 10, PU 20, PU 40, PU 60
- Measuring Range: 0 - 6000 Pa
- Description: For non-aggressive gases, with optional LCD display for direct volume flow indication.

Potentiometers
- Types: POT 1, POT 2
- Resistor: 10 kOhm
- Protection Class: IP54 (POT 1), IP30 (POT 2)
- Description: Used for manual rpm arrangement and motor status indication.

Accessories for Centrifugal Fans
- Outlet Flange and Collar: Made of galvanized steel, suitable for high temperatures and Ex applications.
- Inlet Collar and Flange: Made of galvanized steel, suitable for high temperatures and Ex applications.

Protection Guard (BG)
The protection guard is designed for the suction side cover of single inlet centrifugal fans, made of steel and black coated as standard. It is suitable for use in explosive (Ex) environments. Various sizes are available, each with specific dimensions and part numbers.

Connection Clamps (VBM)
These are made from galvanized sheet steel and are used for low-noise connections between fans and plumbing. They are lined with foam and suitable for Ex-applications.

Back Draught Damper (RSK)
An automatic damper with a spring mechanism for installation in tube systems. It opens in the air stream and closes via spring force. The casing is made of galvanized sheet steel with aluminum back draught dampers.

Plastic Shutter (VK)
This is an automatic, square plastic shutter for high-pressure wall installation, with an Ex version made of conductive plastic.

Mounting Brackets and Consoles
Various mounting solutions are provided for tube fans, including mounting brackets (HB) and consoles (MKA), made of galvanized steel and suitable for Ex-applications.

Filter Box (TFB)
The filter box includes a filter of class F5 and is made of galvanized sheet steel with a folding cover for easy filter changes. It is compatible with standard tube diameters.

Sound Attenuators (RSD and KD)
These are designed to reduce noise in duct systems. The RSD is a perforated aluminum tube with sound attenuation, while the KD is a duct sound attenuator with a frame made of galvanized steel and sound traps with mineral wool.

Flexible Duct Connection (FKV)
This connection features a flange frame made of galvanized steel and a flexible middle section made from PVC woven cloth, suitable for Ex-fans.

Flanges (GF)
Harmonized flanges made of galvanized steel are available for temperatures up to 120°C and are suitable for Ex-applications.

Air Dampers (VKJ)
These are designed for duct systems, with a casing made of galvanized steel and aluminum lamellas, featuring an exterior adjusting lever.

Filter Boxes (KFB)
These include pocket filters of classes G4, F5, and F7, with connections to rectangular duct systems.

Catalog excerpts

Explosionsgeschützte Ventilatoren Explosion proof fans Radialventilatoren mit vorwärtsgekrümmten Radiallaufrädern / Centrifugal fans with forward curved centrifugal impellers Dachventilatoren horizontal oder vertikal ausblasend / Roof fans horizontal or vertical outlet Axialventilatoren mit quadratischer Wandplatte oder Doppelflanschgehäuse / Axial fans plate mounted or double flanged casing Kanalventilatoren mit vorwärtsgekrümmten Laufrädern / Duct fans with forward curved impellers Rohrventilatoren aus Kunststoff / Tube fans made of plastic

Open the catalog to page 1

Ex-Ventilatoren (94/9/EG) / Ex fans (94/9/EC) Einführung Zum 01.07.2003 trat die Richtlinie 94/9/EG (ATEX 100a) in Kraft. Damit wird der Explosionsschutz europaweit einheitlich geregelt. In dieser Richtlinie werden Regeln für das Inverkehrbringen von Produkten zum Einsatz in explosionsgefährdeten Bereichen festgesetzt. On 07/01/2003 the 94/9/EC (ATEX 100a) directive came into force. This Directive governs the subject of “Explosion Protection” throughout the European Union. Regulations referring to placing on the market of products to be utilized in areas with potentially explosive atmospheres...

Open the catalog to page 2

Kennzeichnung Betriebsmittel / Marking of equipment Gerätekategorie / equipment category Gerätegruppe / equipment group Ausreichende Sicherheit / sufficient safety Zone zone bei seltenen Gerätestörungen durch 2 unabhängige Schutzmaßnahmen / during rare occuring equipment faults by means of 2 independent protective measures bei häufigen Gerätestörungen / during frequently occuring equipment faults bei seltenen Gerätestörungen durch 2 unabhängige Schutzmaßnahmen / during rare occuring equipment faults by means of 2 independent protective measures Atmosphäre atmophere Bergbau / mining Methan / Methane...

Open the catalog to page 3

Kennzeichnung Betriebsmittel / Marking of equipment Hiermit erklärt der Hersteller die Einhaltung sämtlicher relevanter EU-Richtlinien. Hereby the manufacturer declares that all relevant EU directives are met. Nummer der benannten Stelle für Produktionsüberwachung. Number of notified body of control of production. Zündschutzart / type of protection Zutreffende Gerätekategorie / applied equipment group Prinzip / principle Durch bauliche Maßnahmen soll eine Entzündung durch bewegte Teile, heiße Oberflächen oder Funken verhindert werden / An ignition through moving parts, hot surfaces or sparks...

Open the catalog to page 4

Allgemeine Angaben / General Notes Elektrische Betriebsmittel für explosionsgefährdete Bereiche sind in der Europäischen Norm EN 60079 klassifiziert und entsprechenden weiteren Normen zugeordnet. Zündschutzart / type of protection Explosion proof appliances for explosive areas are classified in the European Standard EN 60079 and in further corresponding standards. Klassifizierung / classifications Norm / standard Überdruckkapselung / Pressurising Sandkapselung / Powder filling Druckfeste Kapselung / Compression proof enclosure Erhöhte Sicherheit / Increased safety Eigensicherheit / Intrinsic...

Open the catalog to page 5

Allgemeine Angaben / General Notes Zonen Als Grundlage für die Beurteilung des Umfanges der zu stellenden Anforderungen werden explosionsgefährdete Bereiche nach der Wahrscheinlichkeit des Auftretens gefährlicher, explosionsfähiger Atmosphäre oder brennbarer Stäube in Zonen eingeteilt. Zones Potentially explosive atmospheres are devided into zones in order to assess the feasibility of their existence. Für brennbare Gase, Dämpfe und Nebel gilt: For combustible gases, vapours and fogs the following is applied: umfasst Bereiche, in denen eine gefährliche explosionsfähige Atmosphäre über lange Zeiträume...

Open the catalog to page 6

Allgemeine Angaben / General Notes Sicherheitstechnische Kennzahlen brennbarer Gase / Safety technical numbers of combustible gases (1) Nr. / No.(2) Soffbezeichnung / Compounds Zündtemperatur / Temperature of ignition Temperaturklasse / Temperature class Acetaldehyd / Acetaldehyde Aceton / Acetone Acetylen / Acetylene Aethan / Ethane Äthylazetat / Ethyl acetate Äthyläther / Ethyl aether Peroxydbildung / Peroxide production 28 Äthylalkohol / Ethyl alcohol Äthylchlorid / Ethyl chloride Äthylen / Ethylene Äthylenoxid / Ethylene oxide Selbstzerfall / Spontaneous decomposition 67 Äthylglykol / Ethylene...

Open the catalog to page 7

Auszug aus dem Tabellenwerk „Sicherheitstechnische Kenn- zahlen brennbarer Gase und Dampfe", zusammengestellt im Auftrag der Physikalisch-Technischen Bundesanstalt, Braun- schweig, von K. Nabert und G. Schon, 2. Auflage, Berlin 1963, mit 5. Nachtrag, Deutscher Eichverlag GmbH, Braunschweig. Die Nummerierung (Spalte 1), unter der die Stoffe aufgefuhrt sind, gleichlautend mit der Ifd. Nummer in dem vorhergenann- Die Zundtemperatur dieser Kohlenwasserstoff-Gemische hangt von der Zusammensetzung ab; in Sonderfallen kann sie uber 300 °C liegen. Vergleichen Sie hierzu die Vorbemer- kungen und FulSnoten...

Open the catalog to page 8

mJK/ Allgemeine Angaben / General Notes Motortypenschild Aussenlaufermotor / Rating plate external rotor motor Temperaturilberwachung durch PTC-Auslosegerat (T) Motortyp / motor type (?) Motor Atex Kennzeichnung / Atex designation of motor (T) EG-Baumusterprufung des Motors / EC type examination number of motor (T) Verhaltnis Anlauf-/Nennstrom / ration starting/rated current (5) Kaltleiterauslosezeit/ time of liberation of PTC Benannte Stelle / notified body (7) Elektrische Daten des Motors / electrical data of motor Motortypenschild Normmotor/ Rating plate standard motor (T) Motortyp / motor...

Open the catalog to page 9

Allgemeine Angaben / General Notes Technische Informationen Technical information Mechanischer Teil Mechanical part Rosenberg fans for potentially explosive atmospheres are manufactured and tested in accordance with the state of technical knowledge. The possible contact surfaces between rotating and stationary components in view of operating malfunctions, which are typically to be expected, are manufactured of materials with a minimized ignition hazard resulting from friction, grind or impact sparks. The inlet and outlet of the fan shall be fitted with guards to prevent the ingress of foreign...

Open the catalog to page 10

All Rosenberg Ventilatoren catalogs and technical brochures

Archived catalogs

WORLD OF FANS
450 Pages