earthing control: tes-01 · earthing control: tes-01. systems and parts - earthing control....

SYSTEMS AND PARTS

StuvEx NV (Belgium) Heiveldekens 8, 2550 Kontich

Tel. +32 3 4582552 [email protected] – www.stuvex.eu

StuvEx Safety Systems (UK & IRL) Chertsey, Surrey, KT16 8RE – United Kingdom Tel. +44 1932 571303 – Fax +44 1932 570548

[email protected] – www.stuvex.co.uk

EARTHING CONTROL: TES-01

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Background

When combustible products are loaded/off-loaded from a tanker truck there is a risk of an explosion occurring due to ignition caused by a static discharge from the truck itself. To prevent this occurring the truck must be connected to earth and fully discharged before loading can proceed.

Product

Truck Earthing system TES-01

Advantages

Safe discharge of electrostatic charge

Measurement of the resistance seen at the clamp

Verification that the capacitance is correct for a tanker truck.

Red/green indicators for visual status indication of the earth connection

Interlock to conveying system via a volt-free contact

Bypass of the capacitance mode for operation in extreme wet conditions.

Suitable for 240VAC and 24VDC power supply systems .

To ensure that loading cannot take place without the truck being earthed, a monitoring system is required to ensure that a good connection has been made to the truck by means of a clamp, the earth monitor will then allow the conveying process to be started by means of a relay. For an earth monitoring system to be effective it must be able to distinguish between a connection to a truck and any other metallic body such as ductwork, girders, cable trays etc. In order to make the distinction, the Truck earthing System TES-01 measures the capacitance of the metal body connected to the clamp, it checks whether the capacitance is correct for a truck, and finally provides both visual indication and the closing of a relay contact when the capacitance is correct.

Functioning

The Truck Earthing System TES-01 is designed to detect a low resistance connection across the jaws of the clamp. When a connection is detected the unit safely discharges any electrostatic charge through a resistor to prevent sparking. The control unit then checks the capacitance seen at the clamp. If the capacitance is correct for a tanker truck then the green indicator will be lit and the interlock relay will change state to allow conveying of the product. The unit will then provide a low-resistance connection to earth to prevent the further build-up of electrostatic charge. The connection across the jaws is the continually monitored during the conveying pro-cess. If the connection is broken the unit will switch back to the RED NOT-CONNECTED state and conveying will be halted by means of the interlock relay.

DS_S&P-TES01_SI_13_01_EN

IP version with CM1 clamp, clamp station and spiral cable

EX version

Cable reel

ProDetec Pty Ltd - Ph: +61 2 9620 8700; [email protected]

mailto:[email protected]


http://www.stuvex.co.uk

StuvEx retains the right to make changes without prior notice

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System description The basic system consists of a control unit, an earth clamp and a cable (as an option a cable reel is also available). The earth clamp is ‘active’' With active clamps, both clamp jaws are insulated from each other and from the clamp body. As long as the clamp is not connected to a conductive body, the circuit between the clamp jaws stays open. Once the clamp is connected, the circuit is closed. The cable reel The cable reel is equipped with cable and an automatic roll-up mechanism.

Intended use The control unit, the intrinsically safe measuring circuit and that circuit’s components (clamp, plug connection and cable reel) are ATEX certified. Depending on the type, the system can be set up in Ex zones 1, 2, 21, 22 or in an industrial environment IP 65.

Technical specifications

For more details on this product, we refer to the technical datasheet .

Active clamp CL1

Active clamp CM1

Clamp station Clamp hook


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Characteristics TES-01 Application Specific use for Tanker Trucks on tyres

Recognition Capacitive In addition to low resistance R, the truck’s capacitance C is measured

Functioning With proper earthing the control unit is triggered (the green signalling lamp lights and the potential free contact for interface change state)

Power supply 110-240 VAC +10% / -15% - 50/60 Hz, auto-ranging Or 24 VDC +20% % / -20% Consumption: max 20W

Ambient temp module -20°C to + 60°C

Ambient temp unit -10°C to + 40°C

Humidity level 95% at 20°C (non condensing)

Remote signalling Volt free contact 8A at 250VAC / 30VDC, NO

Signalling lamps Red light: ‘no earth connection’ Green light: ‘correct earth connection’

Operating Guaranty SIL2 / report Technis Reliability Study T533

ATEX Certification The measurement and earth connection circuit is intrinsically safe EEx I and suitable for use in ATEX zone 0 and 20

Versions Type TES-01 / Ex TES-01 / IP

ATEX For Ex zones 1, 2 (gas) 21 and 22 (dust)

For Ex zone 22 (dust) and non hazardous areas

Marking CE Ex II 2(1) GD Ex d [ia Ga] IIC T6 Gb Ex tb [ia Da] IIIC T85C Db IP66

CE Ex II 2 (1)D Ex tb [ia Da] IIIC T135°C

Material Cast aluminium Painted mild steel with stainless steel front plate

Finish Grey coloured coating painted, RAL 7035

Dimensions 230 h x 230 w x 150 d 300 h x 200 w x 150 d

Weight 10 Kg 5 Kg

Connections 4 pieces M20 x 1 3 pieces for M20

Bypass Optional Integrated

Protection degree IP 66 IP 66

DS_S&P-TES01_SI_13_01_EN

IP version

EX version





StuvEx retains the right to make changes without prior notice

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Accessories

Earth connection clamps

Description Application

Type CL 1 Large size: 260 mm, aluminium Jaw opening: min 3, max 15 mm.

For extreme industrial environments

Type CM 1 Medium size: 210 mm, stainless steel Jaw opening: min 3, max 35 mm

For industrial use

Accessories Delivered with loose plug connection

ATEX Passive EEx i component for Ex zone 0, 20

Marking II 1GD Ex c, ia IIC, IIIC T6 T85° C

Clamp Station / Clamp Hook

Material Casing in RVS 304 Support: acetal

Weight 0,20kg

Spiral cable

Type SP1/10 10m

Cable on reel

Type CR 1 / 65 Closed cable housing in aluminium, pivotable on bracket. Shock and weather resistant Spring activated automatic winding, with blocking mechanism

Degree of protection IP 65

Weight 12 Kg

Cable 24 meters H05RN-F2 x 1.5 + 1.5 mm²

ATEX Passive EEx i component and mechanical equipment for Ex zone 1, 21

Marking II 2GD Ex c, ia IIC, IIIC T6 T85° C

Cable without reel

Type CO 01 / 10 10 meters H05RN-F2 x 1.5 + 1.5 mm²

Active clamp CL1

Active clamp CM1

Clamp station Clamp hook


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Main Components Part number Product Description

502-4010-000 TES-01/IP, Control Unit

501-4010-000 TES-01/EX , Control Unit

503-1100-008 CL1, active clamp

503-1050-003 CM1, active clamp

503-5910-100 Spiral cable, 10m, SP1/10

503-5900-100 CO1/10, 10m flying cable (without cable reel)

503-3250-008 CR1/65, Cable reel with 24m cable (optional)

641-1100-020 Remote key switch for TES-01/EX (optional)

503-0900-003 Clamp station (optional)

503-0900-103 Clamp hook (optional)

Unit version Ex Unit version IP

Cable Reel

All dimensions are in mm





earthing control: tes-01 · earthing control: tes-01. systems and parts - earthing control....

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