Arc‑resistant enclosure
Series G switchgear meets IEC 62271‑200, containing internal faults without venting into the aisle. Personnel stay safe, downtime stays short.
Tested at 40.5 kV with zero gas leakageSF6 gas-insulated switchgears, three-phase transformers, and surge arresters engineered for transient overvoltage resilience in manufacturing hubs.
Operational advantages
Series G switchgear meets IEC 62271‑200, containing internal faults without venting into the aisle. Personnel stay safe, downtime stays short.
Tested at 40.5 kV with zero gas leakageT‑1500 transformer uses oil‑immersed tap changers to hold output within ±2.5 % despite fluctuating primary supply. Critical CNC lines never see brownouts.
1500 kVA, 33 kV primary, 0.44 kV secondarySA‑36 metal‑oxide varistors respond in under 1 µs, limiting residual voltage to 1.5× rated. Downstream drives and PLCs survive lightning and switching transients.
36 kV class, 10 kA nominal dischargeNo moisture ingress, no partial‑discharge creep. Series G switchgear runs 10 years between gas checks, cutting maintenance man‑hours by 60 % in dusty shop floors.
0.05 % annual leakage rate guaranteedT‑1500 core uses grain‑oriented silicon steel, keeping idle losses below 2.1 kW. For a three‑shift plant that saves roughly ₹1.2 lakh per year in electricity.
IEC 60076‑1 efficiency class ASA‑36 silicone rubber sheds salt and cement dust. Creepage distance of 1 025 mm prevents flashover even in coastal or chemical‑exposed substations.
IEC 60099‑4, 5 kA square‑wave testOur SF6 switchgear, three-phase transformers, and surge arresters are built for manufacturing hubs that cannot afford downtime from transient overvoltages. Here is what sets us apart from conventional alternatives.
Unlike air-insulated switchgear, our Series G uses sealed SF6 gas that eliminates moisture ingress and reduces maintenance intervals by 60%. This means fewer scheduled outages and consistent dielectric performance even in high-humidity industrial environments.
The T-1500 transformer is tested for 25 kA short-circuit withstand for 2 seconds — a specification often omitted in standard oil-immersed units. This ensures your production line stays online during grid faults without core deformation or winding damage.
Our SA-36 arrester uses metal-oxide varistors with a response time under 25 nanoseconds and residual voltage below 1.4 per unit. Competing polymer arresters typically exceed 1.6 per unit, leaving downstream equipment exposed to damaging overvoltages.
Every Series G switchgear meets IEC 62271-200 internal arc classification AFLR 40 kA for 1 second. This is not a standard feature in many medium-voltage switchgears — it protects personnel and adjacent equipment without requiring additional compartmentalisation.
The T-1500 includes an on-load tap changer with ±10% regulation range, allowing voltage adjustment without interrupting supply. Most industrial transformers in this class offer only off-circuit taps, which require a shutdown to change voltage settings.
Over 200 units deployed across automotive, steel, and chemical plants in India and Southeast Asia. Field data shows a 99.97% operational availability rate over five years — a figure we track per installation, not per brochure.
Explore our range of medium-voltage equipment designed for operational loop resilience in manufacturing environments.
Compact switchgear rated up to 40.5 kV with arc-resistant enclosure, sealed SF6 insulation, and reduced maintenance intervals for high continuity in industrial hubs.
View switchgear details1500 kVA oil-immersed transformer with on-load tap changers, high short-circuit withstand, and low no-load losses for stable power supply to critical processes.
View transformer details36 kV class metal-oxide varistor arrester with silicone rubber housing, fast response, and low residual voltage for protection against lightning and switching surges.
View arrester details