DGOe — oil-immersed arc suppression coils, 100–4000 kVA, 1–37 kV
Oil-insulated DGOe arc suppression coils compensate the capacitive current of a single-phase earth fault in medium-voltage networks.
- Power
- 100–4000 kVA (range 273–2180 kVA)
- Network voltage
- 1–37 kV (15.75; 21 kV, etc.)
- Reactor voltage
- 3650; 6060; 9093; 12 124 V (for 6.3/10.5/15.75/21 kV networks)
- Compensation current
- 30–240 A
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Oil-insulated DGOe arc suppression coils compensate the capacitive current of a single-phase earth fault in medium-voltage networks. At the substation the reactor is connected between the neutral of the power transformer (for star-connected windings) or the neutral of the earthing transformer (for delta networks) and earth: terminal 1U of the working winding is connected to neutral 1N, and terminal 1N of the reactor to earth. During a phase-to-earth fault, an inductive compensation current flows through the reactor and extinguishes the arc. The volt-ampere characteristic is close to linear, which is important in operation. The reactor has an additional winding 2U–2N rated 500 V ±10 %, designed for a current of 500 A for 10 s: it serves to forcibly create the active current component needed for selective protection operation. Terminals of a built-in current transformer S1–S2 are brought out to the cover. The current is regulated in five positions of the tap switch: 100 % (2 h), 87.5 % (4 h), 75 % (8 h), 62.5 % and 50 % (continuous); switching is performed after de-energisation, by a manual drive on the cover, with position interlocking. Range: DGOe 275/15 … 2180/15 for 15.75 kV networks (reactor voltage 9093 V) and DGOe 365/20 … 1940/20 for 21 kV networks (12 124 V), power 273–2180 kVA, compensation current 30–15 … 240–120 A. Versions for 3650 V for 6.3 kV networks, 6060 V for 10.5 kV and other voltages in the range 1–37 kV are possible. Overall dimensions range from 1470×1125×1180 mm (height 2100 mm) to 1715×1185×1370 mm (2350 mm). Design: two-limb core of cold-rolled steel with tie bolts in the middle of the yoke for uniform clamping of the limbs; windings of electrolytic copper with oil ducts between them; screw clamping prevents winding vibration and provides high electrical, lightning-impulse and dynamic strength; a well-considered earthing scheme for the structural elements. Welded tank with radiators or corrugated walls, trolley with movable rollers; options — cable plug-in bushings and accessories. Applications: compensation of capacitive currents in cable-overhead 6–35 kV networks. Standards: PN-EN 60076-6, -2, -1.
Technical specifications
| Power | 100–4000 kVA (range 273–2180 kVA) |
|---|---|
| Network voltage | 1–37 kV (15.75; 21 kV, etc.) |
| Reactor voltage | 3650; 6060; 9093; 12 124 V (for 6.3/10.5/15.75/21 kV networks) |
| Compensation current | 30–240 A |
| Regulation | 5 steps (100–50 % of current), off-load tap changer |
| Auxiliary winding | 500 V ±10 %, 500 A, 10 s |
| Built-in current transformer | terminals S1–S2 |
| Core | two-limb |
| Standards | PN-EN 60076-6, -2, -1 |
Replacement for
РЗДПОМ-…/6–10, РЗДСОМ, РУОМ, РДМР (arc suppression coils 6–35 kV)
selected by purpose and main parameters, please confirm with our manager
Request a price and lead time
DGOe — oil-immersed arc suppression coils, 100–4000 kVA, 1–37 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Similar equipment from other manufacturers
