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R4834

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6 999 UAH
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Made in: 2016

 

Store resistance R4834 (R 4834, R-4834, p4834, p 4834, p-4834)
It is intended for use as a multi-valued measure of electrical resistance (MMES) in DC and AC.
The nominal value of one stage of resistance
senior decade 105 Ohm
decade younger 10-2 Ohm
Accuracy class 0,02/2,5 • 10-7.

Store resistance R4834 (hereinafter - the shop) are intended for use as a multi-valued measure of electrical resistance (MMES) in DC and AC.

Standard conditions for use store:
ambient temperature (20 ± 2) ° C;
relative humidity 25 to 80%;
84-106.7 kPa atmospheric pressure (630-800 mm Hg. centuries).
current is constant;
power is not higher than the nominal (listed in Table 1).

Store electrical resistance R-4834
Operating conditions store:
ambient temperature from 15 to 25 ° C;
relative humidity 25 to 80%;
84-106.7 kPa atmospheric pressure (630-800 mm Hg. centuries).
working - any.

Technical characteristics

Basic parameters and dimensions are given in Table store. 1.
 

Table 1

Parameter name
Parameter value
Accuracy class, with/d
0.02/2.5 x 10-7
The nominal value of one stage of resistance, Ohm:
senior decade
decade younger
May 10
10 -2
Number of decades
8
Rated power dissipation by one notch, W, at its nominal impedance:
10 -2 and 10 5 ohms
10 -1 and 10 4 ohms
from 1 to 10 3 ohms
0,003
0.03
0.3
Maximum power dissipation by one notch, W, at its nominal impedance:
10 -2 and 10 5 ohms
10 -1 and 10 4 ohms
from 1 to 10 3 ohms
0,005
0.05
0.5
The upper limit of the frequency range, kHz
50
Overall dimensions, mm
310h212h175
Weight, kg, not more
5

 

Decade stores option to provide resistance values ​​in accordance with a number (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) h10n where n = -2; -1; 0, 1; 2, 3, 4, 5.
Limit of acceptable deviation of the actual value of the resistance (δ) store as a percentage of the rated under normal conditions of use is determined by the formula:
δ = ± (0,002 + 2,5 · 10 -7 (June 10 / R-1))
where R - the nominal value of the included resistance, Ohm, under normal conditions of use.
Limit time constant (t) with the exclusion of the initial store inductance power value specified in Table. 2.
 
Table 2.
The nominal value of the included resistance, Ohm
The time constant, τ, with
From 1 to 10 incl.
2 × 10 -7
over 10 to 103
1 × 10 -7
About 10 3 to 104
5 × 10 -7
About 10 4 to 105
1 × 10 -6
About 10 5 to 106
1 × 10 -5
 
Mean initial resistance does not exceed:
0,012 ohms at terminal "5" - "9";
0,024 ohms at the terminals "1" - "9" with jumper HR11 at terminals "2" - "3" and the HR12 at the terminals "4" - "5".

The variation does not exceed the initial resistance values ​​of 0.0012 ohms, respectively, and 0.0024 ohms.
The initial inductance L0 in microHenry shops at the terminals "5" - "9" does not exceed the value determined by the formula L0 = 0,1 m +0,2, (2)
where m - the number of included decades of the store.
Inductance when the resistance is not more than 1 ohm to the same terminal is not greater than 0.8 mH.
The limit of additional error store 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), is
value determined by the formula (1).
The limit of additional error (Ap) store as a percentage of its nominal value when the power dissipation of the face to any value that does not exceed the maximum capacity under normal conditions of use and steady-state thermal equilibrium, equal to the value determined by the formula (1).
Maximum permissible additional error (Dp) store a percentage change induced frequency from zero to the upper limit of the frequency range shown in Table. 3 (frequency error) is equal to ± 0,05%.
The insulation resistance between the housing and isolated DC electric circuit to store operating conditions applying at least 5 • 1010 ohm.
Insulation between the case and isolated from the body of a DC electric circuit shop stands for 1 minute test voltage of the AC frequency (50 ± 1) Hz, the mean value of which is equal to 2 kV.


Table 3

Factor of the decade
The upper limit of the frequency range, kHz
"X 1 ohm"
"X 10 ohms", "x 10 2 ohms"
"X 10 3 ohms"
"X 10 4 ohms"
"X 10 5 ohms"
25
50
10
5
1

Lever switches withstand 50,000 moves from stop to stop, have a smooth running and precise fit.
Norma MTBF store with the maintenance of the regulated operational documentation, 10000 hours
MTBF is set for the working conditions and the power dissipated in one step, no more than nominal.
The criterion of failure is the mismatch of shops requirements of (1).
The mean time to repair the state store 24 hours
Full average life of the store 10 years.
Installed failure operating the store for the working conditions of use and maximum power dissipation by one notch 1000 h
Specified service life magazine - 5 years.
The silver content in the store - 3 g
The content of non-ferrous metals in the store:
aluminum alloys - 576.5 g;
copper alloys, 1470.63 g

Photos Р4834

R4834 device image.
R4834 device image.
R4834 front view.
R4834 front view.
R4834 side view.
R4834 side view.
R4834 overhead view.
R4834 overhead view.
R4834 bottom view.
R4834 bottom view.


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