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TYPE
OF
INSTRUMENT |
Moving
iron |
Moving
coil |
Moving
coil
with Rectifier |
Movingcoil
withbuilt-in-
transducer
for power (active
orreactive) |
Moving
coil
withbuilt-in-
transducer
for power factor |
Moving
coil
withbuilt-
intransducer
for frequency |
Bimetal
Ammeter |
Bimetal
Ammeter
withmoving
iron movement |
| Ziegler |
(DE/EQ) |
(DS/PQ) |
(DG/VQ) |
(LM/WQ) |
(LF/EQ) |
(FM/ZQ) |
(BM/BIQ) |
(EB/BIEQ) |
| Sizes (in mm) |
48 X 48
72 X 72
96 X 96
144 X 144 |
48 X 48
72 X 72
96 X 96
144 X 144 |
48 X 48
72 X 72
96 X 96
144 X 144 |
96 X 96
144 X 144 |
72 X 72
96 X 96
144 X 144 |
48 X 48
72 X 72
96 X 96
144 X 144 |
72 X 72
96 X 96 |
72 X 72
96 X 96 |
Measured
quantity |
a) Alternating
current
b) Alternating
voltage |
a) Direct
current
b) Direct
voltage |
a) Alternating
current
b) Alternating
voltage |
Power for
all types of network &
loading |
Power factor for
all types of single phase & 3-phase
networks |
Frequency
for
all types of
networks |
Mean RMS
value and
maximum
value of current |
Mean RMS
value,
maximum value &
instantaneous
RMS
value of current |
Depth behind
bezel |
<30 A = 53mm >30A
to 60A =60mm
>60 A = 67mm |
< 6A = 53mm
> 6A to 60A
= 67mm
>60A =78mm |
53 mm |
105mm & 131
mm for 3-phase
4 wire
unbalanced loads |
53 mm |
53 mm |
53 mm |
53 mm |
Range
Of
measurement |
Current
100mA - 100A (for 48 x 48 upto 60A)
|
Current
15A -100A
(for 48x48
upto 60A)
|
Current
100A -100mA
Voltage
6V -600V |
Related to
rated Current
1A - 5A
&
Voltage
57.7V-500V |
Related to
rated Current
1A - 5A
Voltage
57.7V -500V
|
Related to rated
Voltage
57.7V - 500V
&
Frequency 45Hz-440Hz |
1A &
5A
8 Mins.
Or
15 Mins. |
1A &
5A
8 Mins.
Or
15 Mins. |
Voltage
6V -750V
(for 48 x 48 upto 600V) |
Voltage
15mV-600V |
| Proof voltage |
3.25 kV a.c.
(2.2kV ac for
48) |
3.25 kV a.c.
(2.2kV ac for 48) |
3.25 kV a.c.
(2.2kV ac for
48) |
2.2 kV a.c. |
2.2 kV a.c. |
2.2 kV a.c. |
3.25 kV a.c. |
3.25 kV a.c. |
Weight(Approx)
(In kgs.) |
48 X 48=0.12
72 X 72=0.20
96 X 96=0.25
144 x 144= 0.30
|
48 X 48=0.12
72 X 72=0.20
96 X 96=0.25
144 x 144= 0.30 |
48 X 48=0.12
72 X 72=0.20
96 X 96=0.25
144 x 144= 0.30 |
96 X 96 =
0.65-1.10
144 x 144=
0.85-1.30 |
96 X 96=0.32
144 x144 =
0.52 |
72 X 72=0.25
96
X 96=0.30
144
X144= 0.60 |
72 X 72=0.20
96
X96= 0.25
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72 X 72=0.30
96
X96= 0.35 |
| Shunt resistors |
Shunt resistors are available
for D.C. Measurement with minimum Nominal current = 5A,maximum
= 7500 A and voltage drop being (1) 50mV (2) 60 mV (3)
75 mV (4) 150 mV |
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