How do you calculate Loadline?

How do you calculate Loadline?

The load line length is measured on waterline “d1” at 85 percent (0.85D) of the least molded depth “D.” The load line length is either: 96 percent of the total waterline length, or. the waterline length from the FP (forward side of the stem) to the axis of the rudder stock, whichever is longer.

How do you calculate transformer amps?


  1. Transformer full load current = kVA / (1.732 x Volt)
  2. Transformer full load current = 1000 / (1.73 2× 480) = 1203 Amp.
  3. Short circuit current at TC secondary (Isc) = Transformer full load current / Impedance.
  4. Short circuit current at TC secondary = 1203 / 5.75 = 20919 Amp.

How do I choose a power transformer?

  1. Step 1: Determine the KVA, Amperes or wattage required by the load. Determine the KVA, Amperes or wattage required by the load.
  2. Step 2: Find out the supply voltage.
  3. Step 3: Determine the voltage required by the load.
  4. Step 4: What is the frequency of the supply source?
  5. Step 5: Determine the Marcus transformer model number.

How do you choose an output transformer?

The two things that determine the power handling capability of the transformer are the core size and the gauge of wire used to wind the transformer. The core size is proportional to the power and the required low frequency -3dB point. A transformer rated for 50W at 80Hz is much smaller than one rated for 50W at 20Hz.

What makes tube amps sound better?

Just like our ears, musical instruments and just about everything else natural, tube amplifiers have the least distortion at the lowest levels. This is why a tube amplifier can sound great played softly, while with transistor amplifiers people are usually needing to turn it up to have it sound best.

How do you calculate RMS for amps?

When measuring a pure sine wave, RMS voltage can be calculated by measuring the peak voltage level and multiplying it by 0.707. This value can then be used to calculate RMS power. In turn, if the RMS power is known, it can be used to calculate the peak power. This is only accurate for a pure and unclipped sine wave.

What is the 24m load line rule?

Page 2. – 2 – 2.2 The 24m L breakpoint provides a minimum limit to the size of vessel within the scope of the International Convention on Load Lines (Load Lines 66/88), which applies to certain new internationally trading vessels of 24m L and over.

What is multiple Loadline?

What is multiple load line. Multiple load lines are used when, for a period of time, a ship has a need to operate temporarily with a greater freeboard than the minimum freeboard stipulated in accordance with the International Convention on Load Lines of 1966. Purpose of multiple loadline.

How many amps is a 30 kVA transformer?

Three Phase Transformer

KVA 208V 480V
15 41.7 18.1
20 56.6 24.1
25 69.5 30.1
30 83.4 36.1

How do you size a 3 phase transformer?

This is a “Two Step Division”, technique: VA / Voltage = Amperage. Three Phase Example: Using a 75 KVA Three Phase Transformer as a starting point. 75 KVA is equal to 75,000 VA. (K= 1,000) The full value in VA, 75,000 divided by 1.732 = 43,302, which is then divided by the Voltage 208V = 208.2 Amperes.

Why do tube amps need output transformers?

It is responsible for how efficiently the audio power of an amp will transfer to the load of the speakers, and it prevents hundreds of volts (DC) from passing to the speakers. There are different reasons why a person would want to change their output transformer—the most obvious being a blown or damaged unit.

What does an output transformer do in a tube amp?

In simple terms, the OT converts the output tube or tubes’ high-voltage, low-current output signal to a low-voltage, high-current signal, which also makes the tubes’ high-impedance output into a low-impedance signal that can drive a speaker.

How long can tube amps be left on?

How long can you leave a tube amp on? A tube amp is designed to be on for long periods of time. This, however, is not a recommendation. Most manufacturers will recommend no more than 6 to 8 hours of continuous play with at least a 30-minute cool-down break.

Why do guitarists prefer tube amps?

Tube overdrive is much smoother and more responsive than solid-state. It can be influenced by adding high-gain pedals to the signal chain between the guitar and amplifier, and this gives players much more control over the sound. With a tube amp, even how hard a player picks can influence tone.

How many watts is 700 RMS?

700 watts RMS is probably more like 450 watts steady.

How many watts is 200 RMS?

Sample Amplifier Power Rating Chart:

# of Speakers Each Speaker Rating (RMS) Recommended Amplifier Power (RMS)
1 100 watts 30-100 watts
2 100 watts 60-200 watts
3 100 watts 90-300 watts
4 100 watts 120-400 watts