Total Grid Solutions

Total Grid Solutions

We have a competent team comprising of professional engineers, experience engineers, CAD designers which has been in the business more than 10 years. We possess a rich and varied experience in executing large turnkey projects for transmission and distribution substations and infrastructure development.

At TSG, not only we provide our client in engineering and consultancy services but we also offers innovative engineering solution.

Our products have been type tested and validated by the international test laboratories to comply to the IEC standards such as IEC 62271-203. Our manufacturing and quality management system strictly adhere to the ISO 9001:2015, ISO 14001: 2015 and OHSAS 18001:2007.

GAS INSULATED SWITCHGEAR

ZF7A-145 is a 132kV or 110kV conventional size GIS where space constraints is a priority but not key priority. If space constraint is an important feature for 132kV or 110kV application, we recommend the compact size GIS of ZF7C-145, eg. within a building. The ZF79A-300 is for the application at 275kV or 230kV voltage level.

GIS Technical Data

SwitchgearUnit Technical Data  
TypeZF7A - 145ZF9A - 300ZF7A - 145ZF7C - 145
Rated VoltagekV145300145145
Nominal VoltagekV132275132132
Rated FrequencyHz50505050
Rated CurrentAmp.2000, 315040002000, 3150
2000, 3150
Rated short circuit breaking currentkA31.5 / 404031.5 / 4040
Rated short circuit making currentkA80 / 10010080 / 100100
Short time withstand current, 3 seckA31.5 / 404031.5 / 4040
Peak withstand currentkA80 / 10010080 / 100
100
Power frequency withstand voltagekV275460275275
Lightning impulse withstand voltagekV6501050650650
Rated SF6 gas pressure (20°C)
Type of enclosure
MPa0.5
Three phase in
one enclosure
0.5
Single phase in
one enclosure
0.6/0.5
Three phase in
one
enclosure
0.6/0.5
Three phase in
one enclosure
Material :
- Enclosure
- Conductors
- Contacts
-
Aluminium
Aluminium
Silver plated copper
Aluminium
Aluminium
Silver plated copper
Aluminium
Aluminium
Silver plated copper
Aluminium
Aluminium
Silver plated copper

GAS CIRCUIT BREAKER

GCB Features

1. Super Interrupting
2. Reliable Insulating and Current
3. Reduce Maintenance Work
4. Resistance to Earthquake

Gas Circuit Breaker Technical Data

CharacteristicsUnit Technical Data 
Type-LW9 - 145LW9 A- 145
LW25 - 170
Rated VoltagekV145145170
Nominal VoltagekV132132150
Rated FrequencyHz505050
Rated CurrentAmp.315031503150
Rated short circuit breaking currentkA31.54040
Rated short circuit making currentkA8010100
Short time withstand current, 3 seckA31.54040
Peak withstand currentkA80100100
Total breaking timems< 60< 60
< 50
Opening timems< 30< 30< 25
Closing timems< 150< 150< 100
Dead time for auto re-closings0.30.3
0.3
Close /open time for auto re-closingms40 – 5040 – 5040
SF6 gas – rated pressure at 20 deg CMpa0.60.7
0.6
SF6 – annual leakage rate%< 1.0 %< 1.0 %
< 1.0 %
Rated control voltage for the motorVDC 110 / 125 / optionalDC 110 / 125 / optionalAC 240 / optional / DC 110 / 125
Rated control voltage of the opening & closing coilsVdc110 / 125 / optional110 / 125 / optional110 / 125 / optional
Weightkg16001600
1700
Operating mechanism-Closing Spring
Opening Spring
Closing Spring
Opening Spring
Spring
Spring
Reference standard-IEC 62271 - 100IEC 62271 - 100IEC 62271 - 100

DISCONNECTOR

Disconnector Technical Data

No.ItemTechnical Data
1.TypeHCB - 145HCB - 170
2.Rated Voltage (kV)145147
3.Rated Current (A)16003150
4.Rated short time withstand current, (kA)31.540
5.Rated peak withstand current (kA)80100
6.Rated short circuit time (s)33
7.Insulation level75325
8.Rated frequency (Hz)5050
9.Busbar transfer current switching (A)80% of rated current
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