Powerful 1000KVA 375KVA 100KVA Three Phase Pad Mounted Transformer for power distribution

Introduction of Pad Mounted Transformer

The pad-mounted transformer is designed for under ground service and for outdoor mounting on a concrete pad. It is the responsibility of the installer and user to ensure that the interface between the pad and transformer, including the cable compartment, is properly sealed so that foreign objects can not be inserted inside the cable compartment. The primary and secondary cables enter the transformer from below, through openings in the concrete pad.

The pad-mounted transformer is furnished with separate high- and low-voltage compartments equipped with hinged doors. The high-voltage compartment is not accessible until the low-voltage compartment door is opened. The low-voltage compartment door has a provision for a user-installed padlock. All live parts are completely enclosed in locked compartments with adequate baffling for safety. A hood over the tank handhold, accessible through the cabinet, provides protection against tampering and the environment.

Warning

Warning notices are also used for situations in which inattention or lack of equipment knowledge could cause either personal injury or damage to equipment.

• Tank Ground

Electrical connection made must be to ground the transformer tank. This connection is made from the tank ground pad to a permanent low-impedance ground. The tank ground must also be connected to the system ground. Failure to comply may result in serious personal injury or damage to the equipment.

• External Electrical Connections

Make only the connections and operate only at the voltages authorized by the diagrams and information on the transformer name plate. The available transformer neutrals should be connected to the system neutrals. Each lead and connection not in use should be insulated from ground and from all other leads and connections. Failure to comply may result in serious personal injury or damage to the equipment.

• Tap Changer

The tap changer must not be operated while the transformer is energized. Failure to comply may result in serious personal injury or damage to the equipment.

• Dual-Voltage Switch

The dual-voltage switch must not be operated while the transformer is energized. Check the name plate and the switch position for the correct voltage before placing the unit in service. Failure to comply may result in serious personal injury or damage to the equipment.

• Low-Voltage Circuit Breaker

With the secondary circuit breaker open there may be sufficient coupling to the windings for a shock hazard to exist at the secondary terminals. Ground the open secondary terminals before working on the secondary service.

• Lifting

Use all the lifting lugs when lifting the transformer. Use proper spreaders to obtain a vertical lift. Do not use the radiators for lifting or jacking. Failure to comply may result in serious personal injury or damage to the equipment.

• Venting

Always release any possible pressure in the tank by carefully venting the pressure-relief valve before attempting to remove hand hole covers or similar covers, including relief diaphragms and shipping covers (when used). Failure to comply may result in serious personal injury or damage to the equipment.

• Bayonet Fusing

Read the instructions supplied with the bayonet cutout before operating.

• Dry-Well Nonloadbreak Fuse Holder

Deenergize transformer before removing or installing fuse holder cap assembly. Failure to comply may result in serious personal injury or damage to the equipment.

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QXG pad mounted transformer are designed, built, and tested in accordance with the highest industry standards including UL, ANSI CSA, DOE, and IEEE as applicable. They can be configured for general purpose and unit substation applications and are customizable to give you greater control over your unit’s function and safety.

More information please contact us.