What is X1 and X2 on a transformer?
For small control transformers, there will be X1 and X2 terminals only where X1 is the power side and X2 the grounding and a side of the low voltage. X2 is terminated to the neutral side of the control circuit and is also used for grounding safety.
What is X1 and H1 on a transformer?
By convention, terminals Hi and X1 have the same polarity, which means that when H1 is instantaneously positive, X1 is also instantaneously positive. These markings are used in establishing the proper terminal connections when connecting single-phase transformers in parallel, series, or three-phase configurations.
What color is X1 on a transformer?
For this reason, the relative instantaneous polarity of each winding of a transformer is indicated by a marker H1 (or a white spot) on or near one primary terminal, and a marker X1 (or a white spot) near one secondary terminal.
What is H4 on a transformer?
H2 & H4 = white – 120 volt ‘neutral’. The transformer output has no grounded neutral – both sides are “hot”.
How do you terminate a transformer?
Transformer coil terminations are usually done with the coil end anchored on the surface of the coil itself to form a terminal, connected to a piece of insulated cable called a lead, or attached to terminals on a terminal board. On smaller AWG-sized leads, color coding is used.
What is the orange wire on a transformer?
The three-phase power is connected in the delta configuration, and the center point of one phase is grounded. This creates both a split-phase single phase supply (L1 or L2 to neutral on diagram at right) and three-phase (L1-L2-L3 at right). It is called “orange leg” because the wire is color-coded orange.
Does transformer change power?
A transformer is an electrical device that trades voltage for current in a circuit, while not affecting the total electrical power. This means it takes high-voltage electricity with a small current and changes it into low-voltage electricity with a large current, or vice versa.
What are the primary leads on a transformer?
Input Connections – The input side of a transformer is called the primary side because the main electrical power to be changed is connected at this point. Output Connections – The output side or secondary side of the transformer is where the electrical power is sent to the load.
Can a transformer increase voltage?
A transformer that increases the voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a step-up transformer. As a step-down unit, this transformer converts high-voltage, low-current power into low-voltage, high-current power.
How many routes does Wilts and Dorset operate?
Wilts & Dorset operates four routes on behalf of Bournemouth University, having secured a second five year contract to do so during summer 2009. This new contract saw the revision of routes operated, an undertaking to introduce new vehicles, and the extension of discounted travel for staff and students to Wilts & Dorset’s ‘more’ routes.
When did Wilts and Dorset start nightbus services?
In June 2012, a new nightbus route was launched connecting Bournemouth to Bournemouth University. Also, all three services started operating on Thursday nights, in addition to Friday and Saturday nights. In August 2008, Wilts & Dorset (using the ‘more’ brand) sponsored the Bournemouth Air Show.
When did Wilts and Dorset change to Unilinx?
From 2004, when the university contract originally transferred to Wilts & Dorset from Yellow Buses, until the end of 2009, services were branded as Unilinx and operated by a mixed fleet including double-deck buses painted in a modified version of the ‘more’ livery.
Who are the owners of Wilts and Dorset?
It is owned by the Go-Ahead Group. The following is a list of bus routes operated by the company, including details of specific route branding used. Most services are run with buses in the standard new livery (2008-), which is red, with a blue skirt along the bottom, which swoops up at the back, with a blue rear end.