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2021-07-15 / V1.0

Contactors C320K/C320S – Installation and Maintenance Manual

General and safety information

2.2  Duties of the operating company

 

X

Observe all applicable national regulations, all 

safety, accident prevention and environmental 

protection regulations as well as the recognised 

technical rules for safe and correct working.

 

X

Regularly check all fitted protection and safety 

equipment for correct function.

 

X

Work on electrical equipment must only be car-

ried out by a qualified electrician or by instructed 

persons under the supervision and control of a 

qualified electrician in accordance with electrical 

regulations.

 

X

A specialist is someone who, on the basis of their 

technical training, knowledge and experience as 

well as knowledge of the relevant regulations, 

is able to assess the work assigned to them and 

identify possible dangers.

 

X

Work on the contactors must only be carried out 

by personnel who meet the requirements set out 

in this manual.

 

X

Personnel must be clearly informed about who is 

responsible for the maintenance of the contactors.

 

X

Always perform complete checks after any instal-

lation work and/or after any other conversions, al-

terations or maintenance, in accordance with the 

following standards: 

 

-

EN/IEC 60077-2 

 

-

EN/IEC 60947-4-1

2.3  Intended use

 

X

The contactors have been designed and tested ac-

cording to national and international standards. 

Due to their unique features they can also be used 

in a wide range of industrial applications.

 

X

The contactors must only be used under operat-

ing conditions according to the technical specifi-

cations and the instructions in this manual.

 

X

None of the conditions of use, such as voltages, 

currents or ambient conditions, defined in the cor-

responding technical data sheets or in our 

C320 

catalogue

 may be overridden. The 

C320 catalogue

 

is available under: 

https://www.schaltbau.com/media/C320_en.pdf

 

 

X

The contactors may only be used when all protec-

tive devices are present, have been correctly in-

stalled and are fully operational.

 

X

Contactors may not be used without other safety 

precautions in potentially explosive atmospheres 

and/or in aggressive media.

 

X

The device contains unprotected live parts. 

 

X

The prescribed clearances relative to other live 

parts or earth and other parts must be complied 

with as well as the safety regulations of the appli-

cable standards.

 

X

Switching at close to the maximum breaking ca-

pacity may require increased minimum clearanc-

es! Do not hesitate to ask our advice in respect of 

any dimensioning.

 

X

Coil suppression for reducing surges when the coil 

is switched off is optimally attuned to the contac-

tor‘s switching behaviour. The existing opening 

characteristic must not be negatively influenced 

by parallel connection with an external diode.

 

X

Improper handling of the contactors, e.g. impacts 

on the floor, may result in breakage, cracks or de-

formation. Always handle the device with care.

 

X

Only use the contactors for the specified applica-

tion and only with original parts. Any other usage 

of or tampering with the contactors is considered 

contrary to their intended use. No liability is as-

sumed for damages and accidents caused due to 

non-compliance with the instructions in this man-

ual or improper use of the contactors.

2.4  Ambient conditions

ATTENTION

The contactors have been design for specific ambi-

ent conditions. 

 

X

Only operate the contactors in ambient condi-

tions, such as temperature ranges, degree of 

soiling, etc., as defined in the corresponding 

data sheets and in our 

catalogue C320

. The 

C320 catalogue

 is available under: 

https://www.schaltbau.com/media/C320_en.pdf

Summary of Contents for C320 Series

Page 1: ...3 3 Contactors C320 series 1 pole AC and bi directional DC NO contactors for 1 000 A Installation and maintenance instructions Manual C320 M en...

Page 2: ...ns 6 3 1 Electrical hazards 6 3 2 Other hazards 6 3 3 Measures for avoiding damage and malfunctions 7 4 Product information 8 4 1 C320 1 pole bi directional DC NO contactors 8 4 2 Technical informatio...

Page 3: ...required 16 Connecting the S870 auxiliary switches 17 Connecting the coil 18 Connecting the main contacts 19 7 3 Checks 21 8 Maintenance 22 8 1 Safety 22 8 2 Preventive maintenance 22 Intervals for re...

Page 4: ...methods to simplify working or indicates informa tion of particular importance This manual describes single pole contactors of the fol lowing types C320K 1000 C320S 1000 2 General and safety informati...

Page 5: ...ons defined in the cor responding technical data sheets or in our C320 catalogue may be overridden The C320 catalogue is available under https www schaltbau com media C320_en pdf X The contactors may...

Page 6: ...e main circuit X Besides the main power circuits also disconnect additional and auxiliary circuits X Cover or insulate adjacent live parts X The presence of a voltage free state can only be clearly id...

Page 7: ...estroy the data on the magnetic strips of credit or similar cards X Keep credit or similar cards away from the contactors ATTENTION During switching off strong electromagnetic fields are generated in...

Page 8: ...breaking capacity are important fea tures of the new contactor X Compact dimensions high rated insulation volt age Ui up to 1 800 volts X High making capacity Icm of up to 3 000 amps and an excellent...

Page 9: ...acts connection M8 torque 10 12 Nm C Base plate with 4 fastening holes for M5 screws torque 2 3 2 7 Nm D Fixing lugs for bundling and fixing control wires with cable ties E Auxiliary switch S870 W1D1...

Page 10: ...M8 torque 10 12 Nm C Base plate with 4 fastening holes for M5 screws torque 2 3 2 7 Nm D Fixing lugs for bundling and fixing control wires with cable ties E Auxiliary switch S870 W1D1 t flat plug conn...

Page 11: ...ing is not available care must be taken to pack the contactor in a way that prevents dam age during shipment 6 Unpacking 6 1 Unpacking the device X Before opening the packaging perform a visual inspec...

Page 12: ...aded holes for threaded screws or through holes for threaded screws and nuts X Fastening of the contactors on the mounting plate is performed using four M5 mounting screws The length of the mounting s...

Page 13: ...currents produces elec tric arcs and it is possible that plasma will escape from the openings of the arcing chambers There fore it is extremely important to maintain the minimum clearances to ground e...

Page 14: ...Tools required X Socket spanner set hexagon nuts X Open ended spanner set X Torque wrench X Hex key set Installing the contactor X Ensure that the contact surfaces on the mounting plate 3 are free fr...

Page 15: ...able under https www schaltbau com media C320_en pdf X The connecting wires of the main power circuit must be fitted with appropriate ring terminals for M8 terminal screws X Schaltbau recommends Schno...

Page 16: ...s includes discharging any capacitors in the main circuit X Besides the main power circuits also disconnect additional and auxiliary circuits X Cover or insulate adjacent live parts X The presence of...

Page 17: ...s caused by the wires e g shock vibrations acting on the terminals X Route the coil control wires 1 to the auxiliary switches 2 X Plug the pre assembled control wires with the re ceptacles 1 to the co...

Page 18: ...o such diode is used in your control circuit ATTENTION X Mechanically secure the control wires to mi nimise feedback effects of forces caused by the wires e g shock vibrations acting on the terminals...

Page 19: ...ction with wires are shown in Fig 13 and Fig 14 X Route the pre assembled connecting wires to both main contacts 4 X Screw the 4 ring terminals 3 in place from above using the terminal screws 1 nuts 5...

Page 20: ...he busbars 3 to both main contacts 4 X Screw the busbars 3 to the main contacts 4 us ing the terminal screws 1 nuts 5 and suitable screw locking elements 2 Schaltbau recommends using Schnorr washers o...

Page 21: ...ect polar ity X Check that the control wires are correctly connect ed to the auxiliary switches Check the correct assignment and function of the auxiliary switches using a continuity tester X Switch t...

Page 22: ...the procedure in reverse 8 2 Preventive maintenance Contactors of the C320 series are maintenance free within the rated mechanical life time The electrical life time depends on the number of switching...

Page 23: ...ace missing fastening elements X tighten the terminal screws to the rated torque Contactor housing Check for X dirt X loose or missing fastening elements penetrations holes in the housing wall X damag...

Page 24: ...e nance Replacing the S870 auxil iary switches Checking the main contacts The housing of the contactor has inspection openings on both narrow sides 1 through which the main con tacts can be inspected...

Page 25: ...ls required Continuity tester Procedure X Pull off the receptacles of the control wires from the auxiliary switches X Carefully release the snap fit hook 1 of the catch mechanism Be careful not to dam...

Page 26: ...6 2021 07 15 V1 0 Maintenance Contactors C320K C320S Installation and Maintenance Manual 1 1 2 2 Fig 21 C320S Replacing the auxiliary switches 1 2 3 3 2 Fig 22 C320S Replacing the auxiliary switches 2...

Page 27: ...vailable under https www schaltbau com media C320_en pdf 11 Disposal This product is designed for exclusive professional use by commercial companies The owner is responsible for ensuring an environmen...

Page 28: ...mmunications engineering MIL connectors Charging connectors for battery powered machines and systems Connectors for railway engineering including UIC connectors Special connectors to suit customer req...

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