Siemens 3TS11 Series Operating Instructions

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Contactor for capacitor switching:
Type: 3TS11.. to 3TS15.. and
3TS21.., 3TS22.., 3TS25..
IS/IEC:60947-4-1
3TS11..-0A..5-8K
3TS21..-0A..5-8K
A. Technical Data
i) Main circuit:
The capacitors are precharged during pick-up via early-make
contacts and integrated pre-charge resistors before the main
contacts close.
This combination may be used for switching of Individual
capacitor for power factor correction of single loads or for
switching capacitor banks in parallel in centralized group
power factor correction system.
• Insulation Voltage Ui = 690 V AC,
Temperature: Storage -25 to +55ºC
Service (without derating) -25 to +40ºC
Use the devices with the declared capacitor bank ratings only.
Load of contactor when switching
Contactor Type
3ph-AC capacitor kVAr at 415/440V, 50Hz
3TS21..-0A..5-8K
3TS11..-0A..5-8K
3TS22..-0A..5-8K
3TS12..-0A..5-8K
3TS13..-0A..5-8K
3TS14..-0A..5-8K
3TS15..-0A..5-8K
3TS25..-0A..5-8K
• Switching frequency in Make/Break operations:
180 Operating cycles / hour for all ratings
• Maximum back-up fuse rating: For Type-1 Coordination
Type-3NA7 as per IEC 60269
: 1.6...1.8Ie
ii) Aux Circuit:
Inbuilt: Auxiliary Contacts
1NO+1NC in case of 3TS1211 To 3TS1511 and 3TS2211,
3TS2511
No built-in auxiliary contacts for 3TS1200 To 3TS1500 and
3TS2200, 3TS2500
1NO in case of 3TS11... and 3TS21...
3TS13..-0A..5-8K
3TS22..-0A..5-8K
5
7
10
12.5
16
20
25
30
Operating Instructions
Hazardous Voltage can cause Electric
Shock and burns.
Disconnect Power before proceeding with
any work on this equipment.
Avoid operation during under voltage
conditions. Switch only onto discharged
capacitors. Manual operation not permitted
for function testing.
Commissioning and maintenance by
qualified personnel only. Follow the
operating instructions.
Do not remove precharging resistors. If
contactor is switched on load without resistor,
it may cause damage to the contactor.
Additional Aux:
Facility to add-on 1NO or 1NC auxiliary contact block
type 3TX40.. is available for 3TS11.., 3TS1200, 3TS1300,
3TS1400, 3TS1500, 3TS21.., 3TS2200, 3TS2500
3TX 40.. Block fitment (For 3TS11.., 3TS1200, 3TS1300,
3TS1400, 3TS1500, 3TS21.., 3TS2200, 3TS2500)
Aux Contact Rating:
3TX40
Ie AC-15 = 3.6A at 415V
Ie DC-13 = 0.48A at 220V
Note: Do not remove precharging resistors. If contactor is
switched on load without resistor, it may cause damage to
the contactor.
iii) Control circuit:
• Control voltage is marked on the coloured identification
tag on the coil.
Note:
• The voltage is to be maintained within allowable limits.
• Operation on under voltage conditions to the coil may
cause damage to the coil/contactor.
• Maximum back-up fuse rating for control circuit = 16A
= 6A if relay contact is in the control circuit.
iv) Internal connection diagram
 In built NO incase of 5kVAr & 7kVAr
Fig. 1
Warning:
Connection Details for
3TS11... to 3TS15...
and 3TS21..., 3TS22...,
3TS25... is shown in
figure 1