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R4830/1

24 999 RUB
8 750 UAH
available:
26 pieces

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Store of resistance R4830/1 (R 4830/1, R-4830/1, p4830/1, p 4830/1, p-4830/1)
Designed to work in DC and AC frequency up to 50 kHz, as a measure of electrical resistance.
Resistance range from 0.01 Ohm to 12222.21 Ohm
Size not more 490x135x365mm.
Accuracy class 0,05/2,5 • 10 -5

Store of resistance R4830/1 (GOST 23737-79) are designed to operate in DC and AC frequency up to 50 kHz, as a measure of electrical resistance. Standard conditions for use store R4830/1 R4830 1/1:
ambient temperature (20 ± 2) ° C;
relative humidity 25 to 80%;
atmospheric pressure (84 - 106.7) kPa [(630 - 800) mm Hg].

Operating conditions store R4830/1:

ambient temperature (20 ± 10) ° C;
relative humidity from 25 to 80% in the working temperature range;
atmospheric pressure (84-106.7) kPa (630 - 800) mm Hg].

Technical characteristics

Accuracy class store resistance R4830/1 - 0,05/2,5 • 10 -5.
The range of values ​​reproducible resistance of 0.01 ohm steps to 12,222.21 by 0.01 ohms.
The average value of the initial resistance of the store R4830/1 (ie, resistance to the installation of all the switches on the decadal zero reading) Ro, its variation ΔRo and OKP code correspond to the values ​​indicated in the table.1.


Table 1.

Shop resistance R4830/1
The average value of the initial resistance Ohm
Variations of initial resistance, Ohm
OKP code
After the usual clips of "1" - "2"
After a low-resistance terminals "2" - "3"
After the usual clips of "1" - "2"
After a low-resistance terminals "2" - "3"
0.03
0.02
0,003
0,002
42 2513 0172 05

 

Rated power dissipation of each stage of the decade "H10000Om" does not exceed 0,025 W, «H100000Om" does not exceed 0,0025 W.
Rated power dissipation of each stage of decades "H1Om" "H10Om", "H100Om", "H1000Om" does not exceed 0.25 W, "H0.1Om" - 0,025 W, "X0 01Om" - 0.0025 W, maximum power dissipation each stage of the decade "H100000Om" does not exceed 0,005 watts, "H10000Om" - 0.05 W "H1000Om", "H100Om", "H10Om", "X0 01Om" - 0.5 W, "X0, the 1st" - 0 , 05 Watts, "X0 01Om" - 0,005 watts.
Limit of acceptable deviation of the actual value of the resistance (δ) as a percentage of the rated under normal conditions of use is determined by the formula (1):

δ1 = ± (0,05 + 2,5 · 10-5 (Rk/R-1)) (1)

where Rk - the highest resistance value store R4830 / 1 Ohm;
R - the nominal value of a resistor in ohms.

The deviation of the actual value of the nominal impedance for initial verification (when it is shipped from the manufacturer) and the allowable change in resistance δ percent for the year (instability) does not exceed the value calculated by the formula (1) in the normal conditions of use, the steady-state thermal equilibrium and power dissipation at most nominal rated current store R4830/1 when the decades of "X0, the 1st" and "X0 01Om" no more than 0.3 A.
The limit of additional error store R4830/1, caused by changes in ambient temperature between the upper (lower) limit the range of normal conditions of use and by some point in the related field of application of the operating temperature corresponding to the maximum change in resistance Rmax, numerically equal to the value determined by the formula (1).
The initial inductance and inductance store R4830/1 when the resistance less than 1 ohm (including primary inductance) through low-resistance terminals is less than 1 μH.
Limit the time constant τ store R4830/1, with the exclusion of primary inductance, and the screening with low-impedance output, do not exceed the values ​​shown in Table. 2 (for the resistance from 105 to 106 ohms τ is normalized at a power dissipation of 0.025 W).

 

Table 2.
The nominal value of the included resistance, Ohm
The time constant, τ, with
At rated power one step, W
0,025
0.25
St. 1 to 10
-
2 × 10 -7
St 10 to 103
-
1 × 10 -7
St. 103 to 104
-
5 × 10 -7
St. 10 4 to 105
1 × 10 -6
-
St. 105 to 106
1 × 10 -5
-

 


The upper limit of the frequency range for each decade shop R4830/1 is as indicated in Table. 3.


Table 3.

Decade, Ohm
The upper limit of the frequency range, kHz
0.01
-
0.1
-
1
10.0
10
50.0
102
50.0
103
10.0
104
5.0
105
0.5

 

If you enable more than one decade the upper limit of the frequency range should not exceed 20.00 kHz.
The limit of additional error store R4830/1 caused by the change in frequency from zero to the upper limit of frequency range on the table. 3 (frequency error) at a power not greater than the nominal dispersion under normal conditions of use and in the steady heat balance does not exceed the values ​​defined by formula (1).
The insulation resistance between the case and isolated dc circuits store R4830/1 in the working conditions of application of not less than 2 • 108 Ohm;
Insulation between the body and insulated from the housing dc circuits store R4830 / 1 in the working conditions of use stand for 1 minute test voltage of 2 kV AC 50 Hz.
Dimensions shop R4830/1, no more 490h135h365 mm. Mass store R4830/1, not more than 8.5 kg. The total content of non-ferrous materials in the store R4830/1 is given in Table. 4.


Table 4.

Name of non-ferrous metal
The content of the store R4830/1 kg
Aluminium D16A
0.2
Alloy AL 2
4.0
Copper wire MM
0,535
Bronze Br. OF 6,5-0,15
0,140
Brass L63
1,070
Brass LS59-1
0.4

Photos Р4830/1

R4830/1 (P4830/1) device image.
R4830/1 (P4830/1) device image.
R4830/1 (P4830/1) front view.
R4830/1 (P4830/1) front view.
R4830/1 (P4830/1) side view.
R4830/1 (P4830/1) side view.
R4830/1 (P4830/1) rear view.
R4830/1 (P4830/1) rear view.
R4830/1 (P4830/1) overhead view.
R4830/1 (P4830/1) overhead view.


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