In European designs, higher secondary voltages allow secondaries to stretch to almost 1 mi, and have a standard secondary voltage of 220, 230, or 240 V . The European voltage is twice the size of the North American standard.
22.
The coupling coefficient does not change between when the system is in the resonance state and when it is not in the resonance state, or even if the system is in resonance state and a secondary voltage larger than the turns ratio is generated.
23.
A mid-sized modern steelmaking furnace would have a transformer rated about 60, 000, 000 volt-amperes ( 60 MVA ), with a secondary voltage between 400 and 900 volts and a secondary current in excess of 44, 000 amperes.
24.
Their transformers featured aluminum primary winding and were cast using relatively inexpensive molds, allowing them to produce cast coil transformers in a variety of KVA capacities, primary and secondary voltages and physical coil sizes, including low profile coils for mining and other specialty applications.
25.
A CT with a rating of 2.5L400 would indicate it can produce a secondary voltage to 400 volts with a secondary current of 100 amperes ( 20 times its rated 5 ampere rating ) and still be within 2.5 amperes of true accuracy.
26.
The primary of the transformer is connected between the high voltage line and earth, the secondary is a three-wire single-phase system as described here, the secondary voltage being 230 / 460 V . Single phase loads are split between the two circuits.
27.
On the inside of the cap there is a terminal that corresponds to each post, and the plug terminals are arranged around the circumference of the cap according to the firing order in order to send the secondary voltage to the proper spark plug at the right time.
28.
The third technique, primary-side sensing, can be as accurate as the first and more economical than the second, yet requires a minimum load so that the discharge-event keeps occurring, providing the opportunities to sample the 1 : N secondary voltage at the primary winding ( during Tdischarge, as per Fig3 ).
29.
In areas using 110 120 volt AC, a simple half-wave rectifier limited the maximum plate voltage that could be developed; this was adequate for relatively low-power audio equipment, but television receivers or higher-powered amplifiers required either a more complex voltage doubler rectifier or warranted the use of a power transformer with a conveniently high secondary voltage.
