Stocked item: delivered in 1–2 working days in Ho Chi Minh City, Binh Duong and Dong Nai; free delivery for orders from VND 20,000,000; defective items exchanged within 7 days. Shipping & return policy
Product code: TD-INS · Specification: Portable earthing set, low voltage, 35 kV, 110 kV, 220 kV — 16–35 mm² copper cable
Portable Earthing and Short-circuiting Set
Delivery: made-to-order items, 3–7 working days; lead time for large quantities is confirmed with the quotation.
Warranty: per manufacturer.
The portable earthing (grounding) set consists of insulating sticks, 3 phase branch leads with clamps + 1 main earth lead, an earth rod and clamps. It is used for temporary earthing and 3-phase short-circuiting during maintenance of switchgear, lines and substations. Prices from 3,240,000 VND per set, excl. 8% VAT.
Updated: 19/10/2026 — PRIMEAG engineering team
Portable earthing set price list (VND per set, excl. 8% VAT)
| Type | Standard configuration | Price |
|---|---|---|
| Low-voltage earthing set | 4 sticks, stick height 62 cm; 3 branch leads + 1 main lead 4×1 + 15 m; cross-section 16 mm²; earth rod 80 cm; clamp opening 5.3 cm | 3,240,000 |
| 35 kV earthing set | 3 sticks, 1.6 m high; leads 3×3 + 15 m; cross-section 16 mm²; stick tube Ø3.2 cm; earth rod 80 cm; clamp opening 5.3 cm | 3,960,000 |
| 110 kV earthing set | 6 sticks (each stick 2 joined sections, 2.1 m high); leads 3×3 + 15 m; cross-section 16 mm²; stick tube Ø3.2 cm; earth rod 80 cm; clamp opening 5.3 cm | 5,280,000 |
| 220 kV earthing set | 9 sticks (each stick 3 joined sections, 4.05 m high); leads 3×8 + 19 m; cross-section 35 mm²; stick tube Ø3.2 cm; earth rod 80 cm; clamp opening 5.3 cm | 10,200,000 |
Indicative prices, excluding 8% VAT, delivered in Ho Chi Minh City; exact prices depend on quantity and stock at the time of quotation. Export processing enterprises (EPE): VAT 0% invoice, and PRIMEAG handles the on-the-spot import/export customs declaration for orders from 20,000,000 VND.
Construction and selection
- Cable: flexible stranded copper with a transparent sheath so broken strands are visible; 3 branch leads clamp the 3 phases and join into 1 main lead to earth. Select the cross-section by the maximum short-circuit current and clearing time (see IEC 61230).
- Clamps: aluminium alloy or copper, 5.3 cm opening to suit common busbars and conductors; flat-bar clamps are available for low-voltage panels.
- Insulating sticks: the number of sections and height increase with voltage class (62 cm for low voltage, 1.6 m for 35 kV, 2.1 m for 110 kV, 4.05 m for 220 kV).
- 80 cm earth rod: driven into the ground or clamped to the substation’s earth electrode/earthing grid.
Safety sequence
- De-energize, lock out and hang a “Do not switch on” tag.
- Verify the absence of voltage with a voltage detector of the correct voltage class.
- Clamp the earth end to the earthing system first.
- Use the insulating stick to clamp the 3 phases one by one, wearing insulating gloves and insulating boots.
- When finished: remove the 3 phases first and the earth end last, and check that the set is complete before re-energizing.
Inspection and storage
- Before each use: no broken cable strands, no cracked clamps, bolts tight, sticks free of cracks and moisture.
- Store in a cloth bag in a dry place, away from oil and grease; number each set and keep a handover log so none is left in place when re-energizing.
Companion equipment for substations and electrical rooms: insulating hot stick, insulating rubber mat, insulating stool. Guide to choosing a complete set: electrical safety equipment for electrical rooms and MSB (main switchboard) panels.
FAQ
– When is a portable earthing set used? — After de-energizing and verifying the absence of voltage, before working on the equipment: earth and short-circuit all 3 phases to protect workers if the power is re-energized or an induced voltage appears.
– What is the order for attaching and removing? — Attaching: clamp the earth end to the earthing system first, then clamp the 3 phases one by one with the insulating stick. Removing: the reverse — remove the 3 phases first and the earth end last.
– What cable cross-section is sufficient? — The low-voltage to 110 kV sets in the table use 16 mm² copper cable, the 220 kV set uses 35 mm². Higher short-circuit currents require a larger cross-section as calculated by the power utility.
– Can sets be made to order? — Yes: cable length, cross-section, clamp type and number of sticks are made to order. Send the specifications or a drawing and PRIMEAG will quote.
Technical references
- IEC 61230 – Live working: Portable equipment for earthing or earthing and short-circuiting
- OSHA 1910.269 – Grounding for protection of employees
Price: from 3,240,000 VND per set (excl. 8% VAT).
Ordering: send the voltage class, specification/size and quantity — PRIMEAG quotes within 30 minutes via the quote form or call/Zalo +84 906 108 292; need help choosing the class? Send a consultation request.
Hotline/Zalo +84 906 108 292 · info@primeag.vn
Written by the PRIMEAG engineering team.
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Updated: 2026-10-23
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