BETA 500KVA/11/0.415V COPPER/COPPER WINDING TRANSFORMER
Produced within a power range between 10 – 100.000 kVA , up to 170 kV high voltage level, three phase or single phase, oil immersed, ONAN, ONAF, OFWF, with Off-Load or On-Load Tap Changer, used both external and internal.
Dimensions of transformer conservator are determined and designed after several heat calculations of the oil stored in expansion tank and oil level changes by heat.
Being open to atmosphere, oil pressure changes continuously in Conservator Type Transformers due to thermal effects and exchange of air is dehumidified via air breather silicagel.
₦15,950,000.00
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CHANGEOVER SWITCHES, Electro, GEAR SWITCHES & CHANGEOVER
ABB CHANGEOVER SWITCH 400A with Enclosure
Including a black plastic IP65 I-0-II pistol type handle (see the table below), shaft and bolt set for the cable connection. Handle padlockable in the 0-position, door interlock in the I- and Iipositions and when padlocked.
Dimensions
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- Product Net Width:
- 265Â mm
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- Product Net Height:
- 185Â mm
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- Product Net Depth / Length:
- 203Â mm
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- Product Net Weight:
- 7.415Â kg
16.35 lb
Technical
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- Rated Operational Current AC-21A (Ie):
- (380 … 415 V) 400 A
(500 V) 400 A
(690 V) 400 A
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- Rated Operational Current AC-22A (Ie):
- (380 … 415 V) 400 A
(500 V) 400 A
(690 V) 400 A
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- Rated Operational Current AC-23A (Ie):
- (380 … 415 V) 400 A
(500 V) 400 A
(690 V) 400 A
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- Rated Operational Current AC-31B (Ie):
- (380 … 415 V) 400 A
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- Rated Operational Current AC-33B (Ie):
- (380 … 415 V) 400 A
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- Rated Operational Power AC-23A (Pe):
- (380 … 415 V) 220 kW
(500 V) 280 kW
(690 V) 400 kW
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- Conventional Free-air Thermal Current (Ith):
- q = 40 °C 400 A
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- Conventional Thermal Current (Ithe):
- Fully Enclosed 400 A
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- Rated Impulse Withstand Voltage (Uimp):
- 12 kV
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- Rated Insulation Voltage (Ui):
- 1000 V
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- Rated Operational Voltage:
- 1000 V
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- Rated Short-time Withstand Current (Icw):
- for 1 s 15 kiloampere rms
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- Power Loss:
- 10 W
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ACCESSORIES, ELECTRICAL INDUSTRIAL
Thermal Overload Relay – TA25DU4.0
TA25DU-4.0
General Information
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- Extended Product Type:Â TA25DU-4.0
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- Product ID:Â 1SAZ211201R1033
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- EAN:Â Â 4013614216565
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- Catalog Description:Â Â TA25DU-4.0 Thermal Overload Relay
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- Long Description:
- The TA25DU-4.0 thermal overload relay is an economic electromechanical protection device for the main circuit. It offers reliable and fast protection for motors in the event of overload or phase failure. The device has trip class 10A. Further features are the temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP- and Test function and a trip indication. The overload relays are connected directly to the block contactors. Single mounting kits are available as accessory.
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ELECTRICAL INDUSTRIAL, TRANSFORMER
ABB 33kV, 2500Amps SF6 Gas Circuit Breaker Outdoor Type OHB
Base Cabinet
The base cabinet is made of painted mild steel. The cabinet houses a spring operated mechanism which is mechanically linked to all three poles. The cabinet also includes the followings:- Anti-condensation heater
- Circuit breaker status indicator
- Mechanical operation counter
- Breaker control switches
- Anti-pumping relay
- AC / DC fuses, MCBs
- Auxiliary wiring
- Terminal blocks
- Gas pressure monitoring relays
Operating mechanism
For high operational reliability and minimal maintenance, a simple and robust spring operated mechanism is used.Features
- O-C-O operation without recharging
- Closing spring is charged by motor in less than 15 secs.
- Mechanical / electrical anti-pumping
- Provision for manual charging
- Suitable for rapid auto-reclosing
- Manual closing and tripping arrangement
- Mechanical ON – OFF and SPRING CHARGED indication
- Auxiliary switch: 13 NO + 13 NC
- Additional tripping solenoid(optional)
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