Function Of Ammeters Type 8403/2 And 8405/2; Electrical Data; Mechanical Data - Stahl 8403/2 Instructions De Service

Function of ammeters type 8403/2 and 8405/2

5.1 Types of protection
• Explosion protection
group and category
• Certificate of conformity
• Type of explosion protection to
EN 50014
• may be used in Temperature class
• Degree of protection to IEC 60529

5.2 Electrical data

• Connection cross-section
• Terminal tightening torque
(for cross-sections specified)
• Rated insulation voltage
• Ambient temperature
• Measuring ranges for type 8403/2
• Measuring ranges for type 8405/2
• Display range (to DIN 43 701)
• Overload range
• Overload capacityt

5.3 Mechanical data

• Vibration resistance (to DIN 40040)
• Impact resistance (to DIN 40040)
• Weight
• Dimensions
6 Function of ammeters type 8403/2 and 8405/2
These ammeters are moving-iron devices with an accuracy of 2.5. Each has a red pointer
which can be set externally, providing a quick means of comparing values measured. The
scale on 1 A and 5 A ammeters with instrument transformers can be matched easily and
quickly to measuring range in situ by inserting the appropriate scale plate from the side.
Under no circumstances should the scale of direct-reading ammeters be changed!
8
Ammeter Version 8403/2 and 8405/2
1-second duration
25-second duration
II 2G und I M2
PTB 01 ATEX 2158 U
EEx e II/I bzw. EEx em II/I
T6
Connections without cover IP 00
Connections with cover IP 20
2
2,5 mm
2
max. 6 mm (with fork-type cable lug)
1 ... 1,2 Nm (9 ... 11 lbin)
750 V
- 20 °C ... + 40 °C (standard)
< - 20 °C ... + 40 °C (on request)
0,02 A; 1,0 A; 1,5 A; 2,5 A; 4 A;
5 A; 10 A; 15 A; 25 A; 40 A
0,02 A; 1,0 A; 1,5 A; 2,5 A; 4 A; 5 A;
10 A; 15 A
Corresponds to measuring range
2 x (for direct measuring ammeters)
2 x or 5 x
(for meters with instrument transformers)
50 x rated current
2 x rated current
2 g, 10 ... 55 Hz
30 g, 18 ms
approx. 250 g
see table 7-1