Điện trở shunt FL-2 DC Shunt 75MV 10A, 15A, 20A, 30A, 40A, 50A, 100A Class 0.5

1. Overview

   FL series DC shunt is suitable for measuring DC current below 10KA directly

Analog display instrument used in conjunction with DC current measurement range expanding external shunt with , or see

Into a standard resistor for current sampling in a sequential circuit , the sampling voltage can be regarded as a measurement

The analog signal of the current in turn.

2. Main technical indicators:

2.1 Accuracy level: 0.5 level

2.2 Rated primary current: 3 0A , 4 0A, 5 0A

2.3 Rated secondary voltage: 75mv

2.4 Ambient temperature influence: every time the ambient temperature (with reference temperature) changes by 10 ℃ , the shunt output

The change of 2.5 does not exceed 0.25% of the nominal value

2.6 The influence of thermoelectric potential: when 80% of the rated current passes through the shunt, the error caused by the self-heating caused by the thermoelectric potential (the thermoelectric potential conversion resistance value change) does not exceed 0.25% of the shunt nominal  

2.7 Conditions of use: Group B (that is, temperature -40 + 60 ° C ) specified in 3.1.3 of JB / T9281 ,

To humidity ≦ 95% ( 35 ℃ )

2.8 Overload capacity: 120% of rated current value , lasting 2h .

5. Matters needing attention:

5.1 When the shunt is working , the cross-sectional area and length of the cable or bare copper wire ( row ) connected to the shunt

It should meet the JB / T9288-1999 Table 2 specified ;

5.2 The connection between the primary circuit cable (or copper bar) and the shunt does not allow human contact

The sampling points of resistance and secondary voltage cannot be sampled from non-sampling points.

5.3 The internal resistance of the DC ammeter used for current indication should be much greater than the nominal resistance value of the shunt and five

The product of the reciprocal of a fractional precision level.

5.4 It is recommended that the actual current (long time) not exceed 80% of the rated current .

5.5 When the secondary voltage DC is indicated by a pointer-type current meter, the resistance of its wire should not be greater than 1 Ω.