A configuration for the rapid replacement of a faulty multiphase transformer includes a plurality of single-phase transformers each of which has a housing filled with an insulating fluid and in which a core having a higher-voltage and a lower-voltage winding is disposed. At least one bushing socket is connected by a winding connection lead extending within the housing to the higher-voltage or lower-voltage winding. At least one high-voltage feed-through or bushing can be inserted into the bushing socket and a cooling module, which can be detachably connected to the housing and is filled with insulating fluid, cools the insulating fluid.

A configuration for the rapid replacement of a faulty multiphase transformer includes a plurality of single-phase transformers each of which has a housing filled with an insulating fluid and in which a core having a higher-voltage and a lower-voltage winding is disposed. At least one bushing socket is connected by a winding connection lead extending within the housing to the higher-voltage or lower-voltage winding. At least one high-voltage feed-through or bushing can be inserted into the bushing socket and a cooling module, which can be detachably connected to the housing and is filled with insulating fluid, cools the insulating fluid.

A configuration for replacing a multi-phase transformer includes a plurality of single phase transformers each having a housing which is filled with an insulating fluid and in which a core with a high-voltage winding and a low-voltage winding is disposed. The configuration can be set up flexibly and also connected easily and conveniently to a supply network or consumer network by providing each housing with at least one cable connection and connecting each cable connection through a cable line to an outdoor connection which is air insulated, constructed for outdoor use and set up separately from the housing.

A configuration for replacing a multi-phase transformer includes a plurality of single phase transformers each having a housing which is filled with an insulating fluid and in which a core with a high-voltage winding and a low-voltage winding is disposed. The configuration can be set up flexibly and also connected easily and conveniently to a supply network or consumer network by providing each housing with at least one cable connection and connecting each cable connection through a cable line to an outdoor connection which is air insulated, constructed for outdoor use and set up separately from the housing.

A combined electric appliance with a multi-capacitive screen insulation core has three groups of capacitive screens of main capacitor C1, low-voltage capacitor C2 and anti-interference capacitor C3 arranged in an insulation core of a high-voltage electric appliance such as a high-voltage bushing, a cable terminal head or the like simultaneously. A voltage display apparatus, an insulation monitor and a local discharge detector which meet accuracy requirements access a terminal of the low-voltage capacitor C2. Energy is extracted from the terminal to power the electric appliance. A grounding part for current flow is sleeved with a current transformer. The insulation core is sleeved with annular zinc oxide arrester valve plates. Head ends of the valve plates are connected with a terminal of the bushing or the cable head. Tail ends of the valve plates are connected with a flange of the bushing or the cable head.

An ignition coil for delivering a spark-generating current to a spark plug includes a magnetically-permeable core; a primary winding disposed outward of the core; and a secondary winding disposed outward of the primary winding and inductively coupled to the primary winding. The secondary winding terminates at one end thereof in a low-voltage end and terminates at another end thereof in a high-voltage end. At least one of the low-voltage end of the secondary winding and the high-voltage end of the secondary winding is electrically connected directly to a terminal through an electrically conductive polymer.

An ignition coil for delivering a spark-generating current to a spark plug includes a magnetically-permeable core; a primary winding disposed outward of the core; and a secondary winding disposed outward of the primary winding and inductively coupled to the primary winding. The secondary winding terminates at one end thereof in a low-voltage end and terminates at another end thereof in a high-voltage end. At least one of the low-voltage end of the secondary winding and the high-voltage end of the secondary winding is electrically connected directly to a terminal through an electrically conductive polymer.

An electronic device packaging box includes a first base, a second base and a connecting unit. The first base includes two side walls spaced apart from each other in a first direction and each having a first side receiving space, and a connecting wall interconnecting the side walls to define a receiving space. The second base is received in the receiving space, and includes spaced-apart top and bottom walls, and a separating wall interconnecting the top and bottom walls to define two second side receiving spaces. The connecting unit includes two first connecting subunits, each of which is mounted to a respective one of the side walls, and two second connecting subunits, which are mounted to the bottom wall.

An electronic device packaging box includes a first base, a second base and a connecting unit. The first base includes two side walls spaced apart from each other in a first direction and each having a first side receiving space, and a connecting wall interconnecting the side walls to define a receiving space. The second base is received in the receiving space, and includes spaced-apart top and bottom walls, and a separating wall interconnecting the top and bottom walls to define two second side receiving spaces. The connecting unit includes two first connecting subunits, each of which is mounted to a respective one of the side walls, and two second connecting subunits, which are mounted to the bottom wall.

A transformer system includes a transformer module and a base module. One or more transformer modules are detachably coupled to the base module. The transformer module includes a housing, a transformer, primary-side and secondary-side wires electrically connected to primary and secondary terminals of the transformer, a conductive tab electrically connected to a neutral terminal of the transformer, and a first coupling mechanism. The base module includes a base enclosure, a neutral connector electrically connected to a power line neutral connection, and a second coupling mechanism. The second coupling mechanism detachably engages the first coupling mechanism of the transformer module, and the conductive tab of the transformer module is electrically connected to the neutral connector of the base module when the first coupling mechanism is engaged with the second coupling mechanism.