Utah-94-721002-System-Manual.pdf - 第228页

lfmq=póëíÉãë lñÑç êÇ=fåë íêìãÉåí ë=m ä~ë ã~=qÉÅÜåçäçÖó== System Manual “ WARNING. High leakage current. Earth connection essential before connecting su pply. " PKNKO= kÉìíê~ä=ëìééäó=ÄçåÇáåÖ= WARNING THE NEUTRAL COND…

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Classification: For European Community customers who need this information: The systems

are classified as Class A, Group 2 as defined in EN 55011 Clause 4.

Phase 1

conductor

Phase 2

conductor

Phase 3

conductor

Neutral

conductor

SAFETY

ISOLATION

BOX

3-Phase

supply

system

PLASMALAB

IONFAB

SYSTEM

INDEPENDENT

EARTH (GROUND)

3-phase supply

or transformer

secondary

winding

Hand

Operated

NEUTRAL CONDUCTOR

BONDED TO EARTH

(GROUND)

Combined Circuit Breaker

to protect transformer

to system phase conductors

Fig 3.1: Recommended electrical installation

NOTES:

a) The combined Circuit Breaker MUST break all phases if any one phase

exceeds the set current limit.

b) The trip rating of the Circuit Breaker depends on the system type and the

supply voltage to the system.

c) The current-carrying capacity of the cables between the Circuit Breakers

and the system must be greater than the trip rating of the Circuit Breaker.

For example, if a 32A Circuit Breaker is fitted then a cable having

conductors of a minimum rating of 40A (32A x 125%) is required. The

conductors will have a minimum Cross Sectional Area (CSA) of 6.0 mm

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To meet international standards for RF interference, our systems are fitted with filtration on

the mains supply inputs. As a result, there is significant leakage to earth (ground) from the

mains supply.

WARNING

IT IS ESSENTIAL THAT AN EARTH CONNECTION IS MADE BEFORE CONNECTING THE

SUPPLY.

International standard IEC950, section 5.2, requires that a label is attached at the point where

the system is connected to the factory electricity supply: either to the safety isolation box, or

to the transformer, or to the electrical supply outlet socket. This label must contain the

following text:

Services Specifications

Printed: 6-Jan-06, 8:44 Page 9 of 22 Issue 16: April 05

lfmq=póëíÉãë lñÑçêÇ=fåëíêìãÉåíë=mä~ëã~=qÉÅÜåçäçÖó== System Manual

“WARNING.

High leakage current.

Earth connection essential before connecting supply."

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WARNING

THE NEUTRAL CONDUCTOR MUST BE BONDED TO THE EARTH (GROUND)

CONDUCTOR. IF THIS IS NOT DONE ALREADY IN THE FACTORY SUPPLY, THEN IT

MUST BE DONE AT THE SAFETY ISOLATION BOX AS SHOWN IN Fig 3.1. IF AN

ISOLATING TRANSFORMER IS FITTED, THEN THE NEUTRAL CONDUCTOR OF THE

TRANSFORMER SECONDARY MUST BE BONDED TO THE EARTH (GROUND)

CONDUCTOR.

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Customers sometimes wish to fit a Residual Current Circuit Breaker (RCCB), also known as an

Earth Leakage Circuit Breaker (ELCB, or ELB) to the electrical supply to the system. This is not

recommended for this type of equipment, and a 30mA breaker is likely to trip often, due to

the leakage caused by the filters on the power lines. This leakage is in accordance with

International standard IEC950 section 5.2.

a) If you must fit an ELB, we strongly recommend a minimum current of 100mA.

b) Even a 100mA circuit breaker may trip, and we accept no responsibility if this turns

out to be the case.

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• Connection: In accordance with local regulations via a safety isolation

box, lockable in the OFF position, mounted adjacent to the

machine.

• Configuration: 3-phase, star ("Y") with a grounded neutral supply

connected to the centre point. An independent earth

(ground) is required.

• Maximum

Current:

The Maximum Current required by the system is given in the

relevant system installation data sheets.

• Voltage &

Frequency:

380V -10% to 415V +6% or 208V +/-10% phase-to-phase.

Frequency to be 50Hz or 60Hz. Note that voltage and

frequency cannot be changed from the values specified at

the time of ordering.

• Safety

Earthing:

The system safety earthing must be in accordance with local

Electrical Regulations. See Fig 3.1.

Services Specifications

Issue 16: April 05 Page 10 of 22 Printed: 6-Jan-06, 8:44

System Manual lñÑçêÇ=fåëíêìãÉåíë=mä~ëã~=qÉÅÜåçäçÖó== lfmq=póëíÉãë

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A dry and clean compressed air supply at a minimum pressure of 6 bar (90 psig) must be fed

to a customer-supplied air filter/mist separator/pressure regulator unit mounted adjacent to

the machine. A suitable unit is supplied by SMC (part No. AC 2030); other units to the same

specification can be used. Maximum safe pressure in the customer's feed to the regulator

is determined by the regulator used (9.9 bar (148.5 psig) for the SMC unit).

The supply to the system must be monitored by a pressure gauge having a range of 0 to 10

bar (0 to 150 psi). The pressure regulator must be fitted with a stop to prevent a pressure

greater than 6 bar from being supplied to the system. The pressure to be used will be set

during commissioning of the system.

The following air filter/mist separator/pressure regulator unit components are recommended:

Air filter: SMC AF2000-02D with filter element 1129116A.

Mist separator:

SMC AFD2000-02D with filter element 63092. This filter element

must be changed annually. Note that as this item is not

supplied by OIPT, its maintenance is not included in the system

manuals.

Regulator with gauge: SMC AR2001-02G.

Spacers: 2 off SMC Y20L.

FILTER

MIST

SEPARATOR

ADJUSTABLE

PRESSURE

REGULATOR

DRY AND CLEAN

AIR SUPPLY

MINIMUM PRESSURE

6 BAR (90 PSIG)

PRESSURE

GAUGE

0 TO 10 BAR

(0 TO 150 PSIG)

SMC COMPONENTS

OR EQUIVALENT

COMPRESSED

AIR SUPPLY TO

PLASMALAB OR

IONFAB SYSTEM

(SEE SPECIFICATION)

6 MM

PUSH-FIT

CONNECTOR

Fig 4.1: Recommended compressed air supply installation

Services Specifications

Printed: 6-Jan-06, 8:44 Page 11 of 22 Issue 16: April 05