Datasheet
Application
The moving–iron panel meters EQ 48/72/96/144 K (K series) housed in
moulded thermoplastic cases are mainly used for the measurement of
AC currents and voltages in the usual technical frequency range of
16
2
/
3
... 100 Hz.
Moving–iron meters indicate rms–values practically independent of
wave form even of high harmonics. Error of indication may occur for
extreme wave forms (e.g. phase gating controls) and / or frequencies
above 100 Hz.
These meters are not suitable for use with shunts or tachogenerators
due to their high power consumption.
The K–series meters offer application–oriented advantages in switch-
board and generating set production, also suitable for mosaic panel
mounting. The bezel, the glass window and the dial can be easily ex-
changed on site.
Movements
Moving–iron movement with pivot suspension, spring loaded shock ab-
sorbing jewel bearings and silicon oil damping.
Mechanical Data
case details moulded square case suitable to be mounted
in control / switchgear panels, machine tool
consoles or mosaic panels, stackable
material of case polycarbonate thermoplastics,
flame retardant with UL rating of 94 V – 0
material of window glass '
colour of bezel black (similar to RAL 9005) '
position of use vertical ±5° '
panel fixing screw clamps
or spring clamps (except EQ 144 K)
mounting stackable next to each other
panel thickness
40 mm
terminals
voltmeters and hexagon studs, M4 screws and
ammeters up to 30 A wire clamps E3
ammeters
40 A threaded studs M6 with nuts
ammeters >60 A threaded studs M8 with nuts
dimensions (in mm) EQ 48 K EQ 72 K EQ 96 K EQ 144 K
bezel V 48 V 72 V 96 V 144
case V 42.5 V 66 V 90 V 136
depth 53 53 53 53
panel cutout V 45
+0.6
V 68
+0.7
V 92
+0.8
V 138
+1
weight approx. 0.1 kg 0.15 kg 0.2 kg 0.25 kg
' also refer to ”Options”
Electrical Data
measuring unit AC voltage / current
frequency range 16
2
/
3
... 100 Hz
power consumption
voltmeters <4.5 VA
ammeters
15 A <0.5 VA
ammeters >15 A <0.8 VA
overload capacity (acc. to DIN EN 60 051 - 1)
continuously 1.2 times rated voltage / current
voltmeters
5 s max. 2 times, 1000 V max.
ammeters EQ 48 K EQ 72/96/144 K
5 s max. 10 times, 200 A max. 10 times
1 s max. – 40 times, up to 250 A
measurement category CAT III
operating voltage refer to Measuring Ranges
pollution level 2
enclosure code IP 52 case front side
IP 00 for terminals without protection against
accidental contact
IP 20 for terminals protected against
accidental contact '
Measuring Ranges
measuring ranges operating voltage
AC current EQ 48 K EQ 72 K EQ 96 K EQ 144 K
1; 1,5; 2,5; 4; 5; 6; 10;
15; 25 A
1
) 300 V 300 V 300 V 600 V
40; 60; 100 A
1
)
3
) – 300 V 300 V 600 V
AC voltage EQ 48 K EQ 72 K EQ 96 K EQ 144 K
60 V, 100 V 150 V 150 V 150 V 150 V
150 V 150 V 150 V 150 V 150 V
250 V 300 V 600 V 600 V 600 V
400 V, 500 V 300 V 600 V 600 V 600 V
600 V 600 V 600 V 600 V 600 V
750 V, 800 V 600 V 600 V 600 V 600 V
750 V, 800 V
3
) – 1000 V 1000 V 1000 V
900 V, 1000 V 600 V 600 V 600 V 600 V
900 V, 1000 V
3
) – 1000 V 1000 V 1000 V
for use on CT/VT EQ 48 K EQ 72 K EQ 96 K EQ 144 K
N/1 A, N/5 A
1
) 150 V 150 V 150 V 150 V
N/100 V, N/110 V
2
) 150 V 150 V 150 V 150 V
Please state transformer ratio when ordering.
1
) full scale value = 2 times rated value (overload scaling) '
2
) full scale value = 1.2 times rated value ( – ” – )
3
) not for EQ 48 K
Scaling
pointer bar / knife–edge pointer
pointer deflection 0 ... 90°
scale characteristics practically linear
above 10% of rated full–scale value
scale division coarse–fine
scale length EQ 48 K EQ 72 K EQ 96 K EQ 144 K
41 mm 61 mm 97 mm 146 mm
overload scaling
ammeters 2 times rated current '
voltmeters for use on 1.2 times rated voltage
voltage transformers