Wolf LL-114/E H Series Operation And Maintenance Instruction

Operation and maintenance instructions for
Wolf ATEX GRP transformers fitted with
couplers.
Models covered by these instructions.
Model Number
(see label on lid)
LL-114/E/***/***/H*** 110V AC +6%, -10%
LL-142/E/***/***/H*** 110V AC +6%, -10%
230V AC +6%, -10%
LL-214/E/***/***/H***
LL-242/E/***/***/H*** 230V AC +6%, -10%
LL-221/E/***/***/H*** 230V AC +6%, -10%
LL-221/E/***/***/H***/CTE 230V AC +6%, -10%
(Suffixes define temperature class, input plug, cable, output sockets and
fuse arrangement)
The Wolf ATEX GRP Transformer range is rated for a maximum 400VA and
uses a durable GRP (glass reinforced polyester) enclosure housed in a
protective 316 stainless steel skid.
Check model identification label attached to the lid for the transformer's
power rating. The user must ensure this power rating is not exceeded.
The transformer is certified with a maximum output of 400VA in an ambient
o
temperature of up to 40 C or 320VA in an ambient temperature of up to 55
and is Group II, Category 2 equipment for use in Zone 1 & 2 potentially
explosive gases, vapours & mists, where temperature class T4 is permitted,
and zone 21 & 22 potentially explosive dusts where a maximum surface
temperature of 70 o C is permitted.
Approval Codes/Certification for :
II 2 G D Ex db eb IIC T4 Gb
o
Ex tb IIIC T70
400VA - Tamb = -20 to +40 o C
Check model identification label attached to the lid for rated voltage.
ATEX Certificate: INERIS 22 ATEX 0030X.
Certificate 'X' suffix:
Specific conditions of use referring to the fuse "FU40" covered by the
certificate LCIE 15 ATEX 3014U: The flamepath is specified in the
manufacturer drawing.
Specific conditions of use referring to the transformer "TRE" covered by the
certificate LCIE 15 ATEX 3042U: The connection is done in the factory by
means of a terminal Ex "eb" certified for the intended use.
Declarations and Attestations of conformity are also enclosed.
The transformer is also IECEx approved as described above:
IECEx INE 22.0048X.
IMPORTANT INFORMATION
1. Read these instructions carefully before commencing use of the
transformer and retain them for future use.
2. Check the approval label to ensure the equipment is suitable for the
supply provided, ambient temperature present and the environmental
conditions.
3. Ensure the cable type is suitable for your application as certain cables
and their operational use / installation may alter the temperature range
of the product:
-SY cable has a lower operational temperature range of -5°C for flexed
applications. Note this cable's insulation is made from PVC.
-SB cable has a lower operational temperature range of -20°C for flexed
applications.
-H07RN-F cable has a lower operational temperature range of -25°C
flexed applications.
-Helkama cable has a lower operational temperature range of -35°C for
flexed applications.
4. It is the user's responsibility to ensure there is no potential difference
between the earth supply to the transformer and the earth where it is
sited. Where this is not possible the transformer should also be locally
earth bonded. A flexible cable with a conductor area of 6mm
which is no longer than two metres is recommended for this. The
LL-1599 issue 1
DF633
Rated Input Output Voltage
Voltage
24V
42V
24V
42V
110V
110V AC
CTE (55V-0V-55V)
C Db IP66
320VA - Tamb = -20 to +55 o C
2 minimum
Please retain – read before use
transformer must be de-energised during connection or disconnection of
the local earth bond.
5. The transformer housing is constructed from Glass Reinforced Polyester
(GRP) and the mounted sockets are plastic, the end user must ensure
that these materials are suitable for the atmosphere the transformer will
be used in. Excessive force should not be used on plastic components.
6. The transformer must not be opened when energised. After
disconnection from the mains supply, a delay of 5 mins must be
observed before opening.
7. Ensure all replacement fuses are of the correct type and current rating.
Details of the fuses fitted are found on the transformer model
identification label attached to the lid.
8. Prices and design are subject to alteration without notice. All products
sold are subject to our conditions of sale. A copy of these instructions
with any relevant revisions can be found at –
9. When using the product, the plugs must be connected and fully engaged
in their corresponding socket to maintain the IP rating of the plug &
socket. Check the seals are present and in good condition in the socket
lid on any fitted sockets. The covers on the sockets must be fully closed
and latched to seal surfaces and maintain the stated IP rating of the
product.
Note - plugs do not have latching covers or other devices to prevent the
ingress of fluid and/or dusts. They are only IP rated when engaged in
their corresponding sockets. Plugs must be kept clean and dry when
not engaged with a socket.
MAINTENANCE
1. Isolate the transformer from the mains.
2. It is essential that the Transformer is maintained in accordance with the
requirements of EN60079-17
3. A visual check should be carried out to ensure all internal cable is in good
condition and not suffering any sign of damage or degradation. All
internal connections should be checked to ensure that they are correctly
secured.
4. The transformer input and any connected equipment cables, glands and
o
C,
plugs should be inspected before each use. Any damaged cables,
glands and plugs should be replaced immediately.
5. The condition of the GRP Enclosure, door gaskets and sockets should
be inspected for damage, and to ensure there is no breakdown in the
IP66 rating.
6. If changing the input or output fuses, care should be taken to secure the
screwed cover on fully.
7. IMPORTANT - No modifications are permitted to the Transformer.
USER GUIDANCE FOR WOLF ATEX TRANSFORMERS
1. It is a requirement of the certification that the transformer is only operated
in a vertical orientation, with the component transformer at the bottom.
This is indicated by the orientation warning label affixed to the
transformer door.
This Wolf ATEX transformer is fitted with IEC 60269, 80kA breaking
capacity cartridge fuses and is designed to supply a maximum load of
400VA/320VA dependent on the ambient temperature that the
transformer is operated in. The fuse types and maximum values must
not be exceeded. The total power of apparatus operated from the
transformer should not exceed the given maximum VA. Document LL-
1577, contains suggested combinations of Wolf lamps that can be
connected. Where apparatus other than Wolf lighting products are
connected, its load should be checked to ensure it is suitable for use with
type gG (general) fuses. Details of the fuses fitted are found on the
transformer model identification label attached to the lid.
2. In the event of a fault in a circuit connected to the transformer, it is
important that this fault current is interrupted by the output fuses before
overheating damage to circuits and a potentially unsafe condition in the
safe or hazardous area can occur. The user must therefore ensure that
the maximum total impedance of the potential fault current flow path,
from the source to the point of a fault, will not prevent this happening.
The connected circuit impedance is proportional to the length and
conductor area of the cable. Document LL-1577 contains Wolf's
recommended maximum cable lengths for given transformer output
voltage and fuses fitted.
Check model identification label on lid to establish whether the
output of the transformer is CTE connected.
3. Apparatus with long cable lengths (>20m) operated at 24V must be
checked to ensure the calculated voltage drop will not prevent the
apparatus from operating within the specified voltage tolerance (see
apparatus instructions).
4. DIN rail mounted screw type terminal blocks are fitted to the transformer
to connect the input cable. Each terminal is suitable for a single
conductor up to 4mm
to 0.6 Nm whether a conductor is fitted or not.
5. Suitably certified cable glands must be used and be appropriate for the
type of cable used. Any unused cable entries should be blanked off
with suitably certified blanking plugs. Glands and blanking plugs should
be approved to maintain the certification and IP rating as per the
approval label.
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2 only. These terminals should be tightened down
1