6+kV Dry-Type No-Excitation Transformer

Name: Spectrum Industries
Price range: $

6+kV dry-type no-excitation transformer with cast resin epoxy insulation, built for reliable, low-maintenance power in harsh environments.

Our 6+kV dry-type no-excitation distribution transformer is a cast resin SC(B) transformer built with epoxy resin insulation, a construction method widely used across commercial, industrial, and utility applications where safety and durability matter most. Unlike oil-filled transformers, this dry-type design eliminates fire and environmental risks associated with liquid dielectric, making it a preferred choice for indoor installations, populated facilities, and sites where oil containment isn't practical.

Rated Capacity (kVA)

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Overview

Cast resin dry-type transformers are constructed with a winding surface coated in high-quality protective epoxy resin, forming a durable insulating layer around the coil. This epoxy resin, an insulating glue by nature, gives the transformer its common designation as an epoxy cast resin dry-type transformer. The result is a rugged, self-contained unit that performs reliably without the maintenance demands of oil-filled equipment.

A defining advantage of this cast resin construction is its resistance to harsh environmental conditions. Dust, humidity, and other challenging site conditions that would compromise oil-filled transformers have no effect on the cast insulating structure, making this transformer well-suited for industrial plants, parking structures, tunnels, and other demanding indoor or semi-enclosed environments. Its no-excitation design further supports stable operation under varying load conditions without the need for active voltage-regulation components.

Manufacturing this transformer requires precision resin casting technology. The coil is cast in a vacuum chamber using specialized molds and casting equipment, ensuring the epoxy resin fully encapsulates the winding, preventing voids or air pockets that could compromise insulation performance. This vacuum-cast process distinguishes true cast-resin dry-type transformers from other dry-type designs, delivering consistent dielectric strength and long-term reliability. Available in the 6+kV voltage class, this transformer is a dependable, low-maintenance solution for distribution applications where fire safety and environmental resilience are priorities.

Specification Table

Rated Capacity (kVA)	No-load Loss (W)	Load Loss 130°C (W)	Load Loss 155°C (W)	Load Loss 180°C (W)	No-load Current (%)
30	130	605	640	665	2
50	185	845	900	965	2
80	250	1160	1240	1330	1.5
100	270	1330	1415	1520	1.5
125	320	1565	1665	1780	1.3
160	365	1800	1915	2050	1.3
200	420	2135	2275	2440	1.1
250	490	2330	2485	2665	1.1
315	600	2945	3125	3355	1
400	665	3375	3590	3850	1
500	790	4130	4390	4705	1
630	910	4975	5290	5660	0.85
800	1035	5895	6265	6715	0.85
1000	1205	6885	7315	7885	0.85
1250	1420	8190	8720	9335	0.85
1600	1665	9945	10555	11320	0.85
2000	2075	12240	13005	14005	0.7
2500	2450	14535	15445	16605	0.7