Who manufactures ht panels in Hyderabad?

Powertech Transformers & Controls Pvt Ltd manufactures ht panels — 11kv & 33kv at its works in Balanagar, Hyderabad, under BIS licence CM/L-6300036494, and supplies across Telangana, Andhra Pradesh and the rest of India.

What ratings are available for ht panels?

630 A – 2500 A · Up to 31.5 kA. Units are engineered to the customer's single line diagram and site conditions.

Are the products tested before despatch?

Yes. Every unit is routine tested in our in-house laboratory and a test certificate is issued against the serial number. Customers are welcome to witness testing.

Reliable. Safe. Engineered for performance.

HT panels — 11kV & 33kV

High voltage switchgear and protection systems built on Siemens 3AH / 3AF vacuum interrupter technology, type tested to IEC 62271 for indoor and outdoor service.

Overview

630 A – 2500 A · Up to 31.5 kA

High voltage switchgear and protection systems built on Siemens 3AH / 3AF vacuum interrupter technology, type tested to IEC 62271 for indoor and outdoor service.

Typical applications

Industrial substationsCommercial complexesUtilities & DISCOMsSolar plantsMetro & railwaysData centers

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26.5 / 31.5 kA: Breaking capacity
2500 A: Max rated current
IP4X: Enclosure rating
IEC 62271: Type tested

Product range

Standard panel configurations

VCB panel

Indoor metal-clad VCB panels with Siemens 3AH / 3AF vacuum interrupter technology.

11 kV / 33 kV630 A – 2500 AUp to 31.5 kA

Fixed / Drawout

LBS panel

3-position LBS (open / close / earth) for radial and ring distribution.

11 kV / 33 kV400 A / 630 A3-position

Wall / Floor mount

RMU

Compact RMU for ring main feeder protection and sectionalisation. SCADA-ready optional.

11 kV2 – 5 waySCADA ready

Compact & reliable

Metering panel

Revenue-grade HT metering panel with Class 0.2S CTs and Class 0.2 PTs. DISCOM approved.

Class 0.2SDISCOM approvedAMR ready

Accurate & compliant

Bus coupler panel

Bus section / tie panel with auto or manual changeover logic and synchronising check.

Auto / manualSync checkLoad transfer

Secure operations

ICOG panel

Weatherproof outdoor switchgear for remote feeder and substation applications.

IP55Anti-corrosionOutdoor grade

Rugged & durable

Scroll the table sideways

Panel type	Voltage	Current rating	Breaking capacity	VCB make	Configuration
VCB Incomer	11 kV / 33 kV	1250 A / 2000 A / 2500 A	25 kA / 31.5 kA	Siemens 3AH / 3AF	Fixed / Drawout
VCB Feeder	11 kV / 33 kV	630 A / 800 A / 1250 A	25 kA / 31.5 kA	Siemens 3AH / 3AF	Fixed / Drawout
Bus Coupler	11 kV / 33 kV	1250 A / 2000 A	25 kA / 31.5 kA	Siemens 3AH / 3AF	Fixed / Drawout
LBS (3-pos)	11 kV / 33 kV	400 A / 630 A	16 kA / 25 kA	—	Mounted / Floor
HT Metering	11 kV / 33 kV	As per CT ratio	N/A	—	Class 0.2S / 0.5S
Outdoor RMU	11 kV	630 A	16 kA	Siemens / other	2 – 5 way

Technical

Specifications at a glance

Electrical ratings

Rated voltage	11 kV / 33 kV
Rated frequency	50 Hz (±5%)
Rated normal current	630 A to 2500 A
Short circuit breaking	Up to 31.5 kA (1 sec / 3 sec)
Short circuit making	82.5 kA peak (2.5× breaking)
Power frequency withstand	28 kV / 70 kV (11 kV / 33 kV) — 1 min
Lightning impulse (BIL)	75 kV / 170 kV (11 kV / 33 kV)
Degree of protection	IP4X (indoor) / IP5X (outdoor)
Mechanical endurance	10,000 operations (M2 class)
Electrical endurance	E2 class per IEC 62271-100

Construction

Sheet metal thickness	2 mm CRCA (partitions 1.6 mm / gland plate 3 mm)
Paint shade	RAL 7032 light grey (standard)
Busbar material	Electrolytic copper (standard) / aluminium
Bus insulation	Heat shrink sleeve, epoxy supports
Earthing	25–3 mm copper earth bus, fully looped
Compartmentalisation	Busbar / cable / VCB fully separated
Arc flash protection	Pressure relief duct (optional arc-resistant)
Cable entry	Bottom / top (double gland plate standard)

VCB technical — Siemens 3AH / 3AF

Vacuum interrupter make	Siemens (OEM authorised partner)
Type test certificates	Valid CPRI type test reports
Contact life	30,000 no-load / 10,000 full-load operations
Closing time	≤ 70 ms (at 85%–110% rated voltage)
Opening time	≤ 40 ms
Anti-pumping	Standard (electrical)

Strong partnership. Superior solutions.

Authorised Siemens channel partner

Powertech Transformers is proud to be an Authorised Channel Partner of Siemens, delivering globally trusted technology with dedicated regional expertise.