Regional Supplier
Transformer Supplier in Tanzania
IEC-certified power transformers and electrical equipment engineered for Tanzania's growing grid, mining operations, railway electrification, and industrial development.
Tanzania is one of East Africa's fastest-growing economies, with power infrastructure expanding rapidly to meet the demands of industrialization, mining, and rural electrification. The national grid, operated by the Tanzania Electric Supply Company (TANESCO), runs at 50Hz with transmission voltages spanning 11kV, 33kV, 66kV, 132kV, and 220kV. Distribution to end users is standardized at 400/230V three-phase, serving a growing base of residential, commercial, and industrial customers.
The Tanzanian government has prioritized energy infrastructure development through major initiatives including the Julius Nyerere Hydropower Project (Stiegler's Gorge), the Standard Gauge Railway (SGR) electrification program, and the Rural Energy Agency (REA) electrification drives. These projects, combined with a booming mining sector producing gold, graphite, and other minerals, are generating substantial demand for power transformers, switchgear, and electrical distribution equipment.
Ziyao Power supplies a comprehensive range of IEC-compliant electrical equipment suitable for Tanzania's operating environment. Our portfolio includes hermetically sealed oil-immersed transformers (S22-M series), dry-type cast resin transformers (SCB13/SCB18), MV metal-clad switchgear (KYN28), GCS LV switchgear panels, and prefabricated substations (YB Series). All equipment is engineered for tropical climate conditions with enhanced cooling, corrosion protection, and appropriate insulation coordination for Tanzania's altitudes and humidity levels.
Julius Nyerere Hydropower Project
The 2,115MW Stiegler's Gorge hydroelectric dam is Tanzania's flagship energy project. It requires extensive ancillary electrical equipment including auxiliary transformers, station service switchgear, and transmission interconnection substations at 220kV and 400kV levels.
Mining Sector Electrification
Tanzania is Africa's fourth-largest gold producer and a growing graphite mining hub. Mining operations require robust, high-reliability transformers and switchgear for process plants, mine ventilation, and camp power supply.
SGR Railway Electrification
The Standard Gauge Railway connecting Dar es Salaam to Mwanza and beyond is being electrified. Traction power substations require specialized transformers, MV switchgear, and auxiliary power equipment along the entire corridor.
Rural Electrification (REA)
The Rural Energy Agency continues to deploy distribution networks to underserved regions. REA projects require cost-effective pole-mounted transformers and compact substations for villages and small towns.
Industrial Park Development
Export Processing Zones and industrial parks in Dar es Salaam, Dodoma, and Arusha are expanding, requiring complete electrical infrastructure packages including transformers, MV switchgear, and LV distribution panels.
Grid Reinforcement & New Substations
TANESCO is upgrading its transmission and distribution network with new 220kV, 132kV, and 33kV substations to improve reliability and reduce technical losses. This drives demand for power transformers and MV switchgear.
Oil-Immersed Distribution Transformers
S22-MHermetically sealed S22-M series for pole-mounted and ground-mounted installations in TANESCO distribution networks and mining operations.
Available with enhanced cooling for high-altitude and high-temperature mining environments.
View S22-M Series →Dry-Type Cast Resin Transformers
SCB13Fire-safe SCB13/SCB18 dry-type transformers for indoor installations in commercial buildings, hospitals, hotels, and government facilities.
MV Metal-Clad Switchgear
KYN28KYN28-12 indoor switchgear with vacuum circuit breakers for utility, mining, and industrial MV distribution networks.
Prefabricated Substations
YBYB Series compact substations for rapid deployment in mining camps, construction sites, and rural electrification projects.
TANESCO Distribution Network
Pole-mounted and ground-mounted transformers for TANESCO's 11kV and 33kV distribution feeders across mainland Tanzania and Zanzibar.
Gold & Graphite Mining
Heavy-duty transformers and MV switchgear for process plants, ventilation systems, and remote camp power in mining sites around Mwanza, Geita, and Lindi.
Railway Electrification
Traction substation equipment and auxiliary power transformers for the SGR corridor between Dar es Salaam and the inland regions.
Industrial Parks & EPZs
Complete electrical infrastructure for export processing zones, factories, and logistics hubs in the Dar es Salaam and Dodoma regions.
Government & Institutional
Dry-type transformers and LV switchgear for hospitals, universities, government buildings, and diplomatic compounds.
Rural Electrification
Cost-effective distribution transformers for REA-sponsored grid extension projects bringing power to villages across Tanzania.
Typical 10MVA Mining Substation — Tanzania Grid
Reference electrical configuration for a 33kV/400V process plant substation serving a medium-scale mining operation. Equipment selection designed for reliability in remote locations with limited grid support.
| Equipment | Qty | Specification |
|---|---|---|
| Power Transformer | 2 | S22-M 5 MVA, 33/0.4kV, ONAN, 50Hz |
| MV Switchgear (Incoming) | 1 set | KYN28-12 adapted, 33kV, 1250A, 25kA |
| MV Switchgear (Feeder) | 1 set | KYN28-12, 11kV, 630A, 25kA, vacuum CB |
| LV Main Distribution Panel | 2 sets | GCS withdrawable, 400V, 5000A, 65kA |
| Diesel Backup Integration | 1 set | ATS panel, 2MW diesel generator synchronization |
| Protection & SCADA | 1 system | Microprocessor relays, mine-wide SCADA integration |
Q: How do I supply transformers to TANESCO in Tanzania?
TANESCO procures electrical equipment through competitive tenders published on their procurement portal and the National e-Procurement System of Tanzania (NeST). As a manufacturer, we support your bid by providing IEC type test certificates, factory test reports, ISO 9001 certification, manufacturer's authorization letter, and detailed technical datasheets. We can also supply bank guarantees and bid bonds where required by the tender documents.
Q: What are the standard voltages in Tanzania?
Tanzania's standard distribution voltages are 11kV and 33kV (primary), with 400/230V (secondary) for three-phase LV. Transmission voltages include 66kV, 132kV, and 220kV. Our transformers are wound precisely for these standards with IEC 60076 tolerance bands. We can also supply 11/0.433kV configurations when specified for LV networks.
Q: Can your transformers operate in Tanzania's high-altitude mining locations?
Yes. Mining operations in Tanzania often sit at elevations of 1,000–2,000 meters above sea level, which affects transformer cooling and insulation. We apply altitude derating factors per IEC 60076 and provide enhanced cooling designs where necessary. Our transformers for mining applications feature reinforced insulation, tropicalized enclosures, and extended creepage distances for bushings.
Q: What is the lead time and shipping for transformers to Dar es Salaam?
Standard production lead time is 6–8 weeks. Sea freight to the Port of Dar es Salaam typically takes 3–4 weeks. We handle all export documentation including Certificate of Origin for SADC/COMESA trade preferences and PVoC (Pre-Export Verification of Conformity) through TBS. Express air freight is available for urgent, smaller-capacity units.
Q: Do you offer commissioning support in Tanzania?
We provide on-site installation supervision, commissioning, and testing by our engineering team. For mining and industrial clients, we offer complete transformer and switchgear commissioning services including oil testing, insulation resistance testing, ratio testing, and protection relay configuration. Remote technical support is also available.
Q: What certification is required for importing transformers into Tanzania?
Transformers imported into Tanzania require PVoC (Pre-Export Verification of Conformity) certification through the Tanzania Bureau of Standards (TBS). Our products come with full IEC type test certificates and factory test reports. We assist clients through the PVoC application process and can arrange inspection by TBS-authorized agents before shipment.
Mining Power Distribution Solution
Heavy-duty transformers and switchgear engineered for Tanzania's gold and graphite mining operations — process plant power, mine ventilation, and remote camp electrification.
Learn more →Industrial Power Distribution Solution
Complete substation packages for Tanzania's export processing zones and industrial parks, including transformers, MV switchgear, and GCS LV panels.
Learn more →Solar Power Distribution Solution
Grid-interconnection transformers and MV switchgear for solar PV installations supporting Tanzania's renewable energy targets and off-grid mini-grid programs.
Learn more →Indonesia 550kW Off-Grid Solar Project
Containerized transformer and switchgear solution for a remote off-grid solar installation — applicable to Tanzania's mining camp power and island electrification on Zanzibar.
View Case Study →Mining Camp Power Infrastructure
Prefabricated substations with S22-M transformers and GCS panels for a gold mining camp in northwest Tanzania. Designed for 33kV incoming and 400V distribution with diesel backup synchronization — suitable for remote mine sites served by TANESCO feeders.
REA Village Electrification Package
Cost-optimized 100–315kVA pole-mounted transformers and compact YB substations configured for Tanzania's 33kV/11kV REA distribution networks. Includes tropicalized enclosures and TBS PVoC documentation for streamlined import clearance.
Need a Transformer Supplier for Tanzania?
Tell us your project requirements — voltage, capacity, quantity — and we'll provide a competitive quotation with full IEC and TBS compliance documentation.