AC Parameter Digital Panel Meter, N20Z – available on request

 

Description

PRODUCT DESCRIPTION
The N20Z meter is a digital programmable panel instrument destined for measurements of a.c. voltages, a.c. currents, or frequency. The readout display is a LED display which enables the exposition of results in red, green or orange colour.
Parameters of the N20Z meter:

input:
? a.c. current: 1 A, 5 A,
? a.c. voltage: 100 V,?250 V, 400 V?
? frequency: 20?500 Hz.
2 alarm outputs of OC type (4 types of alarms)?signaled by highlight of the alarm index,
protection level ensured by the housing: IP65,
readout field: 5 three-colour LED displays of 14 mm?height,
highlighted measuring units,??
supply: 85?253 V a.c./d.c. or 20?40 V a.c./d.c.
overall dimensions: 96 x 48 x 64 mm.

For the configuration of the N20Z is destined LPConfig program. The meter must be connected with the PC computer through a PD14 converter.
Parameters which can be reprogrammed are as follows:

display colour, individually in three intervals,
thresholds of displayed overflows,
display precision of the result (decimal point),
highlight of the unit,
kind of the measured signal a.c. or a.c. + d.c. (True RMS),
averaging time of the measurement,
recounting of indications (individual characteristic),
two alarms of OC type operating in six working modes.

SPECIFICATIONS
Measuring ranges

INPUTS:

Measuring range of Un voltage:

1?100?120 V
2.5? 250?300 V
4? 400?480 V

input resistance > 2 M?

Measuring range of In current:

0.01? 1?1.2 A
0.05? 5?6 A

input resistance 50 m? ? 10%
input resistance 10 m? ? 10%

Frequency measusurement:
(in voltage range 24? 480 V)

20? 500 Hz
input resistance > 2 M?

Preheating time

30 min.

Intrinsic error (at manufacturer settings):

? voltage and current

? (0.5% of the range ?1 digit)
in the frequency interval
20? 500 Hz

? frequency

? (0.02% of the range ?1 digit)

Additional errors in rated operating conditions:

? from ambient temperature changes

(50% of the intrinsic error/10K)

Averaging time:

? voltage, current (programmable)

min 0.5s (1s by default)

? frequency (not programmable)

1s

Alarm outputs

outputs of O/C type
(30 V, 20 mA),
Passive outputs acc. to
EN 62053-31

Rated operating conditions:

? supply voltage

85?253 V a.c. (45?65 Hz) or d.c.
20?40 V a.c. (45?65 Hz) or d.c.

? ambient temperature

? 10?23?55?C

? storage temperature

? 25? + 85?C

? relative air humidity

< 95%
(condensation inadmissible)

? working position

any

Sustained overload capacity

120% Un, 120% In

Short duration overload capacity (3 s):

? voltage input

2 Un (< 1000 V)

? current input

10 In

Readout field

5-digit three-colour LED display:
? digit height: 14 mm,
? colours: green, orange, red,
? indication range: -19999?99999

Ensured protection level from frontal side

IP 65 acc. to EN 60529

Dimensions

96 x 48 x 64 mm (with terminals)

Panel cut-out dimensions

92+0.6 x 45+0.6 mm

Weight

< 0.25 kg

Power consumption

< 6 VA

Electromagnetic compatibility:

? noise immunity

acc. to EN 61000-6-2

? noise emission

acc. to EN 61000-6-4

Safety requirements acc. to PN-EN 61010-1:

? isolation between circuits

basic

? installation category

III
(for 400 V execution ? category II)

? pollution degree

2

? maximal phase-to-earth working voltage:

?

? for supply circuit

300 V

? for measuring input

600 V ? category II
600 V ? category II

? for input destined for programming

50 V