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+255 616 627 609 info@tangtecheng.com Tabata Business Centre Building, 1st Floor, Dar es Salaam
Tang Tech& Engineering Ltd
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+255 616 627 609 info@tangtecheng.com
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Tang Tech & Engineering Ltd

Class V electrical works contractor for MV/HV power, testing, automation and ICT across Tanzania.

CRB Class V · EWURA Class A · BRELA 168901461

Services

  • MV/HV overhead line construction
  • Substation & transformer installation
  • Switchgear & metering panels
  • Testing, diagnostics & commissioning
  • Electrical installation & standby power
  • ICT & security systems
  • Automation & control systems

Company

  • Projects
  • Products
  • Trainings
  • Clients & partners
  • About
  • Contact

Contact

  • Tabata Business Centre Building, 1st Floor
    Dar es Salaam, Tanzania
  • +255 616 627 609
    +255 659 801 321
  • info@tangtecheng.com
© 2026 Tang Tech & Engineering LtdImage credits

Products &equipment

Current-generation MV equipment we supply and install, and the diagnostic instruments our engineers use to test it. Every item is quoted with installation, testing and commissioning.

25 products

Outdoor electrical substation with steel structures, insulators and high-voltage equipment

Transformers & substationsNew

Compact package substations

Up to 1,600 kVA · 11 kV & 33 kV

Factory-assembled kiosk combining MV switchgear, transformer and LV board, ready to set on a plinth.

Control room with electrical panels and gauges

Switchgear & protectionNew

SF6-free ring main units

Up to 24 kV · 630 A

Compact MV switchgear for secondary distribution that uses pure air or vacuum instead of SF6 gas.

Electrician testing a distribution panel with a multimeter

Test & diagnostic instrumentsNew

Partial discharge & VLF cable test systems

MV cables & switchgear

Find insulation defects in cables and switchgear before they fail, and withstand-test new cables.

Rows of solar photovoltaic panels

ICT, security & solarNew

Hybrid solar PV systems

3 – 100 kW

Solar panels, hybrid inverters and lithium or AGM batteries for backup and bill savings.

Two pole-mounted distribution transformers against a blue sky

Transformers & substationsPopular

Oil-immersed distribution transformers

50 – 2,500 kVA · 11 kV & 33 kV / 0.415 kV

Hermetically sealed or conservator-type ONAN transformers for pole and ground-mounted substations.

Row of modular circuit breakers in a distribution board

Switchgear & protectionPopular

MV vacuum circuit breakers & panels

12 – 36 kV · up to 2,500 A

Indoor withdrawable vacuum breakers and air-insulated switchgear panels for main intake and feeders.

Utility pole with overhead conductors and line equipment

Switchgear & protectionPopular

Pole-mounted auto-reclosers

15 – 38 kV · 630 – 800 A

Automatically clear transient faults and restore supply on overhead lines without a site visit.

Large industrial reel of black power cable

Line & cable equipmentPopular

XLPE MV power cables

11 kV & 33 kV · 35 – 630 mm²

Copper and aluminium XLPE-insulated cables for underground and substation connections.

Control room with electrical panels and gauges

Control & power qualityPopular

ATS & generator control panels

63 – 3,200 A

Automatic transfer switches and synchronising panels that bring standby power online in seconds.

Close-up of an electronic measuring device

Test & diagnostic instrumentsPopular

Relay test sets & CT/PT analysers

Secondary & primary injection

Multi-functional test systems for protection relays, current and voltage transformers.

Assorted IP security cameras

ICT, security & solarPopular

IP-CCTV surveillance systems

4 – 64+ cameras

High-resolution IP cameras with PoE recorders, remote viewing and smart detection.

Oil-filled power transformer with radiators and bushings

Transformers & substations

Cast-resin dry-type transformers

Up to 3,150 kVA · 11 kV & 33 kV

Oil-free transformers for indoor substations in buildings, hospitals and data centres.

Close-up of a control panel with indicators and switches

Switchgear & protection

Numerical protection relays

Feeder, transformer & motor protection

Digital relays for overcurrent, earth-fault and differential protection with event recording.

Grey metal electrical enclosure

Switchgear & protection

Primary metering cabinets

11 kV & 33 kV · 630 – 800 A

MV metering units with CTs and VTs for utility billing at the point of supply.

Spools of black power cable on site

Line & cable equipment

Cold-shrink & heat-shrink terminations

11 kV & 33 kV

Indoor and outdoor terminations and straight-through joints for XLPE cables.

Close-up of high-voltage insulators at a substation

Line & cable equipment

Polymer-housed surge arresters

9 – 36 kV · 10 kA

Metal-oxide surge arresters that protect transformers and lines from lightning and switching surges.

Steel transmission towers carrying high-voltage lines

Line & cable equipment

Composite insulators & drop-out fuses

11 kV & 33 kV

Silicone pin, post and long-rod insulators with expulsion drop-out fuse cut-outs.

Distribution board with circuit breakers and control wiring

Control & power quality

LV main distribution boards

Up to 4,000 A · 415 V

Main and sub-distribution boards with air and moulded-case circuit breakers and metering.

Control wiring terminated inside a switch panel

Control & power quality

Power factor correction banks

50 – 1,000 kVAr

Automatic capacitor banks that cut reactive-power charges and free up transformer capacity.

Digital multimeter display

Test & diagnostic instruments

High-voltage insulation resistance testers

Up to 10 kV / 15 kV

Measure insulation, polarisation index and dielectric absorption on cables, motors and transformers.

Technician working inside an electrical panel

Test & diagnostic instruments

Transformer turns ratio & winding resistance testers

Three-phase, automatic

Verify transformer ratio, vector group and winding condition before and after energisation.

Clamp meter used for current measurement

Test & diagnostic instruments

Breaker analysers & micro-ohmmeters

Up to 200 A test current

Measure contact resistance and breaker timing to confirm switchgear is fit for service.

Close-up of an electronic measuring device

Test & diagnostic instruments

Thermal imagers & power quality analysers

Predictive maintenance

Spot overheating connections and diagnose harmonics, unbalance and poor power factor.

Biometric fingerprint scanner

ICT, security & solar

Biometric access control

Single door to multi-site

Fingerprint, face and card readers with attendance and door control.

Structured network cabling in a server rack

ICT, security & solar

Structured cabling & network equipment

Cat6 / Cat6A / fibre

Racks, patch panels, switches and Wi-Fi for offices, hotels and industrial sites.

Need equipment that isn't listed?

We source MV/LV equipment, cables and instruments through our partners. Send us your specification or bill of quantities.

Request a quote +255 616 627 609