G Plus / AG10 / GTK — low-voltage synchronous generators for generating sets 8.5–4000 kVA, 220–690 V

G Plus / AG10 / GTK — low-voltage synchronous generators for generating sets 8.5–4000 kVA, 220–690 V

Country: Brazil · Model: G Plus / AG10 / GTK

Low-voltage brushless synchronous generators G Plus, AG10 and GTK of 8.5–4000 kVA, 220–690 V, 50 and 60 Hz. They work together with internal combustion engines on diesel, gas, biodiesel or ethanol in continuous, prime and standby duty. They are installed in hospitals, data centers, airports, and on mining and marine installations.

Power: G Plus — 12.5–4000 kVA; AG10 — 260–2455 kVA; GTK — 8.5–365 kVA
Voltage: 220–690 V
Frequency: 50 and 60 Hz
IEC frame sizes: G Plus — 160–630; AG10 — 250–400; GTK — 160–355

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Technical specifications

Power	G Plus — 12.5–4000 kVA; AG10 — 260–2455 kVA; GTK — 8.5–365 kVA
Voltage	220–690 V
Frequency	50 and 60 Hz
IEC frame sizes	G Plus — 160–630; AG10 — 250–400; GTK — 160–355
Number of poles	G Plus — 4, 6, 8, 10; AG10 and GTK — 4
Protection rating	G Plus, AG10 — IP21 / IP23; GTK — IP54W, IP55W, IP56W
Insulation class	180 (H)
Excitation	brushless with auxiliary winding; PMG — option from frame 200
Short-circuit withstand	300 % of rated current for 10 s
Impregnation	VPI for 100 % of stators; winding protection Grade 1 (options Grade 2 and Grade 3)

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

G Plus is a universal line of 12.5–4000 kVA in IEC frames 160–630 with 4, 6, 8 or 10 poles, class 180 (H) insulation and IP21/IP23 protection. AG10 is designed for higher power density, has a cast iron frame that dissipates heat better and damps vibration, and gives 260–2455 kVA in frames 250–400. GTK with a cast iron frame goes into metallurgy, mining, oil and gas and off-road equipment, is made for 8.5–365 kVA in frames 160–355 with IP54W, IP55W or IP56W protection, and the Ex-ec version for explosive areas is made on request. Permanent magnets in the exciter stator keep the residual flux after standstill, so the generator excites itself without an external source, and the residual voltage is 600 % higher than in traditional systems. The 2/3 winding pitch eliminates the third harmonic and suits non-linear loads and four-wire networks. The voltage regulator is potted with compound against dust, salt and sand, and PMG excitation is available from frame 200. Stators are impregnated by VPI; Grade 1 winding protection is standard, while Grade 3 with double wire insulation and two coats of epoxy paint is intended for the tropics, coastlines and rental. The quality system is certified to ISO 9001 and ISO 14001, and the generators have CE and UL certificates.

How to choose

It is worth starting with power and frame size. G Plus reaches 4000 kVA, and where higher power density is needed in frames 250–400, AG10 of 260–2455 kVA is taken. For metallurgy, mining and oil and gas with dust and moisture, GTK with protection rating IP54W–IP56W is suitable. For the tropics and coastlines, Grade 3 winding protection is ordered.