NEVA-TEST 6303
FEATURES:
The following operations can be performed on the stand:
- ����������,
- starting current test,
- test without load (self-propelled),
- error check (accuracy class),
- accounting correction check,
- testing influencing quantities (reverse phase,
voltage imbalance, harmonic waves, etc.) imbalance,
- measurement stability check.
PWM (pulse width modulator) is used to amplify the voltage and current at the output of the stand, which provides high efficiency (efficiency is > 85%) and reduces heating. PWM has functions of fault checking, presetting, warning and protection.
Measurement generator uses the latest digital technology to control sine harmonic waves of frequency, amplitude and phase control. Measurement generator can increase several times (from 2-21 times) the primary harmonic of a sinusoidal wave and cause subharmonic waves, including excess subharmonic waves.
The stand uses a processor system for determining the meter error, to which the meter is connected via the RS485 communication method.
It is possible to simultaneously test meters with different constants (counter constant) of identical modification at the stand.
Scanning (measuring) heads with 3-spectrum range adjustment can be mounted on the test bench. Stand can receive signals both from meters with disk-based measurement, and from meters with digital LED pulse measurement.
The test bench has an automatic black mark detection search function that can detect it without load and start tests.
For automatic testing of various meters, the test bench uses a test program combined with WINDOWS98/2000/XP/7 operating systems.
|
No |
Parameter |
Unit |
Parameter value |
|
|
1 |
Current regulation range |
A |
3×(0,001ﾅ120) |
|
|
2 |
voltage regulation range (Unom =3�220 V) |
V |
3×(1ﾅ300) |
|
|
3 |
Output power, per phase: In current circuit In current circuit |
V�� |
1500 800 |
|
|
4 |
Non-sinusoidality of current and voltage signals at maximum load, no more than |
% |
0,5 |
|
|
5 |
Phase control range Phase angle setting accuracy |
degrees |
0ﾅ360 ﾱ0,1 |
|
|
6 |
Frequency control range Frequency setting accuracy |
Hz |
45-65 0,01 |
|
|
7 |
Defined harmonics |
|
2ﾅ21 |
|
|
8 |
Installation error: -current -voltage |
% |
ﾱ 0,5 ﾱ 0,5
|
|
|
9 |
Instability of set values for 120 s of: -current -voltage -ﾠpower |
%
|
ﾱ 0,05 ﾱ 0,05 ﾱ 0,05 |
|
|
10 |
THD at maximum load: - by voltage circuits (from 0.8 to 1.15 Unom) - by current circuits (from 0.05 Inom to Imax) |
% %
|
no more than ﾱ 0,5 no more than ﾱ 0,5 |
|
|
11 |
Maximum output power: by voltage circuits along the current circuit |
V�� |
3×800 3×1500 |
|
|
12 |
HS-9503B current transformer accuracy class for cosφ = 0.5C-1-0.5L, in the current range 3x(0.1ﾅ120) A, no more than |
% |
0,01 |
|
|
13 |
Output power of current transformers |
V�� |
60 |
|
|
14 |
Limits of permissible relative error of the reference meter HY-5303C, in the ranges of ��������� 3×(40�480)V ����� 3×(0,01�120)A when measuring active energy, no more than when measuring reactive energy, no more than |
% |
Accuracy class |
|
|
0,05 |
0,1 |
|||
|
ﾱ 0,05 ﾱ 0,1 |
ﾱ 0,1 ﾱ 0,2 |
|||
|
15 |
Number of simultaneously checked meters |
pcs. |
1ﾅ16 |
|
|
16 |
Operating temperature range |
º� |
20 ﾱ 5 |
|
|
17 |
Supply voltage |
V |
3×220/240 ﾱ 15% |
|
|
18 |
Mains frequency |
Hz |
50 or 60 |
|
|
19 |
Power consumption, no more than |
V∙� |
3×3000 |
|
|
20 |
Stand dimensions (length; width; height) |
mm |
2200; 600; 1920 |
|
|
21 |
Chamber dimensions (length; width; height) |
Documents | ||