| Brand | ROCKWILL |
| Model NO. | ACUS-E Series Metal Enclosed Capacitor Banks |
| Rated voltage | 12kV |
| Rated frequency | 50/60Hz |
| Capacity | 30 MVAr |
| Series | ACUS-E Series Metal Enclosed Capacitor Banks |
The ACUS E-Series MECB consists of a compact modular enclosure that combines primary components with secondary control and protection equipment. The system can be either configured as fixed or switched, with the switched bank consisting of single or multiple steps, automatically controlled to improve power factor.
ACUS E-Series MECB is available in a range of models and is suitable for voltages up to 38 kV. It is fully assembled and factory tested in an ISO 9001 and ISO 14001 environment.
The design of the ACUS E-Series MECB provides a solution suitable for electrical distribution utilities, integrators of renewable power e.g. wind or solar farm integrators and large industrial power users including mining, pulp and paper, chemical, petrochemical, plastics, cement and heavy industries.
● Incoming cable termination busbars
● Isolator/ earth switch
● Surge arresters
● Circuit breakers
● Protection voltage transformers
● Line current transformers
● Control voltage transformers
● Live line indication
● Capacitors
● Inrush, detuning or filter reactors
● HRC fuses
● Contactors
● Pressure switches
● Earthing stick
● Safety interlocks
● Lights
● Heaters
● Cooling fans
● Thermostats
● Power factor controller with modbus communication
● Safety interlock keys
● Over current/ earth fault protection relay
● Unbalance protection relay
● Unbalance/ overload protection relay
● Under/ overvoltage protection relay
● Local/ remote and manual/ automatic switching
| General | |
| Item | Value |
| Voltage | Up to 12 kV |
| Maximum output | Up to 30 Mvar¹ |
| Frequency | 50 or 60 Hz |
| Location | Indoor or outdoor |
| Ambient temperature | –10 / +50 °C¹·² |
| Altitude | <1000 m above sea level¹ |
| Humidity | Maximum 90% RH non-condensing |
| Insulation level | Up to 200 kV BIL |
| Short circuit current | Up to 50 kA for 1 second¹ |
| Bank configuration | Fixed, switched single or multi-step |
| Interlocking (optional) | Mechanical or solenoid |
| Arc fault mitigation | Q-ACT |
| Busbar | Hard drawn copper (tinned) |
| Standards | IEC, IEEE/ANSI, CSA or equivalent |
| ASCE 7-10 120mph Wind rating | |
| IEEE 693-2005 High seismic level | |
| MSK-64 X rating for seismic intensity | |
Enclosure
| Item | Value |
|---|---|
| Material | 'AA' grade corrosion resistant Aluminium, Zinc-coated steel, stainless steel |
| Base frame | Hot dipped galvanized steel |
| Protection | Up to IP65/NEMA 4x indoor/outdoor |
| Door locking | Front: three point lockable handle or side and rear: blind ¼ turn locks |
| Installation | Base fixing |
| Handling | Fork and crane lifting via base |
| Cable entry | Bottom or optional side walls |
Capacitors
| Item | Value |
|---|---|
| Type | Single, three phase |
| Fusing | Internal or unfused |
| Discharge resistor | Built-in |
| Losses | <0.15 W/ kvar including resistors |
| Dielectric | Polypropylene film |
| Container | Stainless steel |
| Busings | Grey porcelain, one, two or three |
Inrush reactors
| Item | Value |
|---|---|
| Type | Single phase, air core |
Detuning/Filter reactor
| Item | Value |
|---|---|
| Type | Single or three phase, iron or air core |
Contactors
| Item | Value |
|---|---|
| Type | Vacuum (transient-free solutions available) |
| Phase | Three |
| Current rating | 1250 A¹ |
Isolator and earth switch
| Item | Value |
|---|---|
| Type | Air-insulated |
| Phase | Three |
| Current rating | 1250 A¹ |
Fuses
| Item | Value |
|---|---|
| Rated current | Up to 315 A |
| Short time current | 63 kA (max) |
Power factor controller
| Item | Value |
|---|---|
| Microprocessor-based system | Insensitive to harmonics for single or three phase system |
| Control voltage | 100 VAC to 240 VAC |
| Power factor setting | 0.7 inductive to 0.7 capacitive |
Higher ratings available on request
Lower ratings available on request
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