Table of Contents
Advertisement
SECTION 1 |
!
CAUTION!
Damage caused by reverse polarity is not covered by warranty.
Use of External Fuse in DC Input Circuit
Use Class-T or equivalent fuse of appropriate capacity within 7" of the battery Positive terminal. This fuse
is required to protect DC input cable run from damage due to short circuit along the length of the cable.
Please read instructions under Section 8.4.5 - Installation.
SECTION 2 |
2.1. DEFINITIONS
The following definitions are used in this manual for explaining various electrical concepts, specifications
and operations:
Peak Value: It is the maximum value of electrical parameter like voltage / current.
RMS (Root Mean Square) Value: It is a statistical average value of a quantity that varies in value with respect
to time. For example, a pure sine wave that alternates between peak values of Positive 169.68V and Negative
169.68V has an RMS value of 120 VAC. Also, for a pure sine wave, the RMS value = Peak value ÷ 1.414.
Voltage (V), Volts: It is denoted by "V" and the unit is "Volts". It is the electrical force that drives electrical
current (I) when connected to a load. It can be DC (Direct Current – flow in one direction only) or AC
(Alternating Current – direction of flow changes periodically). The AC value shown in the specifications is the
RMS (Root Mean Square) value.
Current (I), Amps, A: It is denoted by "I" and the unit is Amperes – shown as "A". It is the flow of electrons
through a conductor when a voltage (V) is applied across it. Frequency (F), Hz: It is a measure of the number of
occurrences of a repeating event per unit time. For example, cycles per second (or Hertz) in a sinusoidal voltage.
Efficiency, (η): This is the ratio of Active Power Output in Watts ÷ Active Power Input in Watts.
Phase Angle, (φ): It is denoted by "φ" and specifies the angle in degrees by which the current vector leads or
lags the voltage vector in a sinusoidal voltage. In a purely inductive load, the current vector lags the voltage
vector by Phase Angle (φ) = 90°. In a purely capacitive load, the current vector leads the voltage vector by Phase
Angle, (φ) = 90°. In a purely resistive load, the current vector is in phase with the voltage vector and hence, the
Phase Angle, (φ) = 0°. In a load consisting of a combination of resistances, inductances and capacitances, the
Phase Angle (φ) of the net current vector will be > 0° < 90° and may lag or lead the voltage vector.
Resistance (R), Ohm, Ω: It is the property of a conductor that opposes the flow of current when a voltage is
applied across it. In a resistance, the current is in phase with the voltage. It is denoted by "R" and its unit is
"Ohm" - also denoted as "Ω".
Inductive Reactance (X
circuit element to a change of electric current or voltage due to that element's inductance or capacitance.
Inductive Reactance (X
6 | SAMLEX AMERICA INC.
Safety Instructions
General Information
), Capacitive Reactance (X
L
) is the property of a coil of wire in resisting any change of electric current through
L
) and Reactance (X): Reactance is the opposition of a
C
Advertisement
Table of Contents
