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Xierko acts as an agent for Frizlen brand GWAD320 series resistors

NegotiableUpdate on 02/11

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Overview

Resistors are electronic components used to restrict the flow of current, achieving functions such as current limiting and voltage division by hindering electronic movement. They are widely used in electronic circuits and electrical equipment, and are represented by Frizlen brand GWAD320 series resistors

Product Details

Frizlen model GWAD320x120-24 1.5 m analysis (based on standard GWAD series speculation)

project	content	Instructions
Product Series	T300 – THE INNOVATIVE ONES	Frizlen's flat wound resistor series is suitable for braking, loads, etc
Model Structure	`GWAD`IP54 protection level flat resistor<br>-`120`Width B=120 mm（Note: The standard model is 80mm, and 120mm is non-standard or customized）<br>-<code class='qwen-markdown-codespan' sf='' mono',='' menlo,='' consolas,='' 'liberation='' monospace='' ! important; '='' style='margin: 0px; box-sizing: border-box; -webkit-tap-highlight-color: transparent; appearance: none; font-family: Montserrat, 'microsoft yahei'; font-size: 0.875rem; padding: 0px 0.25rem; border-width: 0px; border-style: solid; border-color: rgb(227, 227, 227); display: inline-block; line-height: 1.375rem; letter-spacing: -0.04em; color: rgb(97, 92, 237); border-radius: 0.25rem; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(239, 238, 255); word-break: break-word; cursor: pointer; '>24Nominal resistance value=24 Ω (± 10%)
lead length	1.5 m	The standard lead length is 0.5 m (see T309E), and 1.5 m is a customized option
Protection level	IP54 (speculated)	The GWAD series is IP54 (dustproof&splash proof)
Continuous power (40 ° C, 100% DCF)	≈ 300 W(Reference GWAD320x80)	If the width increases from 80 mm to 120 mm, the power may increase to≈ 400–450 W(To be confirmed by the manufacturer)
Short term power (example)	For example: 6% DCF → approximately 2.46 kW	Based on overload coefficient OLF=8.2 (see T304E table): 300 W × 8.2 ≈ 2.46 kW
Lead specifications	FEP insulated wire, 600 V, AWG 14/19 (1.9 mm ²)	Standard configuration (see T309E), 1.5 m for extended customization
Shell material	Anodized aluminum	Standard design, conducive to heat dissipation
Installation method	T-shaped groove or mounting bracket (such as MWS301L/MWS302L)	See accessory description on page T310E
Optional features	Temperature switch (180 ° C)	Model with suffixQ, such as GWADQ320x120-24 (but only applicable to some models)
Applicable scenarios	Inverter braking resistor, DC drive, capacitor charging and discharging current limiting, etc	Refer to the Applications table on page 2 of the PDF
Is it a standard product	No	The standard GWAD width is 80 mm (see T309E table), and customization is required for 120 mm

Supplementary Notes:

Standard GWAD320x80-24 parameters (from PDF T309E)：

Continuous power: 300 W (200 K temperature rise, 40 ° C environment)
Resistance range: 10 Ω~12 k Ω
Size: 320 mm × 80 mm
Weight: 850 g
Lead: 0.5 m, FEP, 1.9 mm ²

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The marking methods for the resistance value and allowable deviation of resistors include direct marking method, color marking method, and text symbol method.

① Direct labeling method

Print the resistance value and error of the resistor directly on the resistor with numbers and letters (marked as allowable error ± 20%). Some manufacturers also use customary marking methods, such as:

3 Ω 3 Ⅰ represents a resistance value of 3.3 Ω and an allowable error of ± 5%

1 K 8 represents a resistance value of 1.8 K Ω with an allowable error of ± 20%

5 M 1 Ⅱ represents a resistance value of 5.1 M Ω and an allowable error of ± 10%

② Color code method

Combining different colorscolor wheelApplyresistorThe nominal value and allowable error of the resistance (capacitor) are represented by (or capacitor), and the values corresponding to each color are shown in Table B303. The recognition rule for the reading of the fixed resistor color ring symbol is shown in Figure T301.

Identification method of four ring resistor

color	Ring number	Second ring number	Multiplier factor	error
black	0	0	10^0	———
brown	1	1	10^1	———
red	2	2	10^2	———
orange	3	3	10^3	———
Huang	4	4	10^4	———
green	5	5	10^5	———
blue	6	6	10^6	———
purple	7	7	10^7	———
gray	8	8	10^8	———
white	9	9	10^9	———
gold	———	————	10^-1	±5%
silver	———	————	10^-2	±10%

Identification of Five Ring Resistance

color	Ring number	Second ring number	Third ring number	Multiplier factor	error
black	0	0	0	10^0	——
brown	1	1	1	10^1	1%
red	2	2	2	10^2	2%
orange	3	3	3	10^3	——
Huang	4	4	4	10^4	——
green	5	5	5	10^5	0.5%
blue	6	6	6	10^6	0.25%
purple	7	7	7	10^7	0.1%
gray	8	8	8	10^8	±0.05%
white	9	9	9	10^9	——
gold	——	——	——	10^-1	±5%
silver	——	——	——	10^-2	±10%[2]

How to use the table above:Four ring resistor:One ring number (ten digits) "red" Two ring number (one digit) "orange" * multiplier "black" error "gold"

Example:; Red Orange Black Gold=23 * 10 ^ 0=23 Ω (± 5%)

Five ring resistor: One ring number (hundred digits), "red", two ring numbers (ten digits), "blue", three ring numbers (one digit), "green" * multiplier, "black" error

Example: Red, blue, green, black, brown=265 * 10 ^ 0=265 Ω (± 1%)

allowable deviationThe allowable deviation between the actual resistance value and the nominal resistance value, expressed as a percentage. The commonly used ones are ± 5%, ± 10%, ± 20%, with precision less than ± 1% and high precision up to 0.001%.precisionDetermined by both allowable deviation and irreversible resistance changes.

rated power　resistorAt rated temperature (ambient temperature)tAllowable for continuous work under RdissipationThe power. For each resistor, the working voltage is also specified, which means that even if the rated power is not reached when the resistance value is high, it cannot be used beyond the working voltage.

Identification of rated power of resistors

The rated power of a resistor refers to the power allowed to be consumed by the resistor during long-term continuous operation in a DC or AC circuit. There are two marking methods: for resistors above 2W, directly print the numbers on the resistor body; Resistors below 2W are expressed in terms of their own volume to represent power. When representing the resistance power on the circuit diagram, use the symbol T302 as shown in Figure:

Load characteristics when the working environment temperature is belowtWhen R is used, the resistor cannot exceed its rated power, and when it exceedstWhen R, the load power must be reduced. There are specified load characteristics for each type of resistor. In addition, the load is allowed to decrease correspondingly under low air pressure. Under pulse load, the average pulse power is much lower than the rated power, and there are generally other regulations.

Temperature coefficient of resistanceWithin the specified ambient temperature range,temperatureThe average relative change in resistance value for every 1 ℃ change, expressed in ppm/℃. In addition to the above parameters, there are also nonlinearity (the degree to which the current deviates from the linear relationship with the applied voltage characteristics), voltage coefficient (the relative change rate of the resistance value with each change in the applied voltage)currentNoise (due to internal factors in the resistor)currentThe ratio of the effective value of the noise potential generated by the flow to the test voltage, represented by the current noise index, and the high-frequency characteristics (due to the distribution inside the resistor)capacitanceTechnical indicators such as the relationship curve between the decrease in resistance value with increasing operating frequency due to the influence of distributed inductance, and long-term stability (the process in which the resistance value of a resistor undergoes irreversible changes due to environmental conditions during long-term use or storage).

classification

Resistors are current limiting components in circuits, and their core functions include:

Current limiting protection: prevents excessive current from damaging sensitive components (such as LEDs or chips). ‌‌

Voltage divider function: It distributes voltage proportionally in a series circuit to provide suitable operating voltage for different components. ‌‌

Diversion and filtering: Balancing current loads in parallel circuits or used for noise filtering in signal processing. ‌‌

Working principle: Ohm's law

Resistors follow Ohm's law (I=U/R), which states that current (I) is proportional to voltage (U) and inversely proportional to resistance value (R). On a microscopic level, electrons collide with atoms in resistive materials to generate thermal energy, thereby hindering the flow of current; The higher the resistance value, the stronger the hindering effect. ‌‌

Main Categories

Fixed resistor: The resistance value is not variable, including:

Carbon film resistor: Low cost, suitable for ordinary circuits (such as household appliances). ‌‌

Metal film resistor: High precision (error ± 0.1%), used in instruments and meters. ‌‌

Wire wound resistor: high temperature resistance, high power, suitable for industrial motors. ‌‌

Variable resistor: The resistance value can be adjusted, such as potentiometers (used for volume control) and variable resistors. ‌‌

Sensitive resistor: The resistance value varies with the environment, for example:

Thermistor: Temperature sensitive, used for overheat protection. ‌‌

Photoresistor: Light sensitive, used in automatic street lights. ‌‌

Two terminals made of resistive materials with a certain structural form that can limit the passage of current in a circuitelectronic component.resistance valueWhat cannot be changed is called a fixed resistor. The variable resistance is calledpotentiometerOr a variable resistor. The ideal resistor is linear, meaning that the instantaneous current passing through the resistor is proportional to the applied instantaneous currentvoltageDirectly proportional. Some special resistors, such asThermistorVaristors andSensitive componentsIts voltage andcurrentThe relationship is non-linear. Resistors are the most commonly used components in electronic circuits, typically formed into different series based on power and resistance values for circuit designers to choose from. Resistors are mainly used in circuits to regulate and stabilize current and voltage, and can be used asshuntandVoltage dividerIt can also be used for circuit matchingloadAccording to circuit requirements, it can also be used foramplifier circuitNegative feedback or positive feedback, voltage current conversion, voltage during input overload, orcurrent protectionComponents, which can also be composed ofRC circuitAs oscillation, filteringbypassDifferential, integral, andtime constantComponents, etc.

Xierko acts as an agent for Frizlen brand GWAD320 series resistors