EM TEST compact NX5 bsp-1-300-16 User Manual

EM TEST Compact NX5
Operating Manual V 1.06 120 / 143
12.9.
Test setup and accessories
12.9.1.
Transformer type V4780
The transformer shall be used to generate under-voltages in ac power supply systems. According to the IEC 61000-
4-11 and the EN 50081-2 voltage dips shall be generated as shown in fig. below. Different test levels are
recommended
12.9.1.1.
Voltage interruptions (DIPS)
Voltage interruptions will cause a reduction of the power supply voltage for a certain period of time. Three different
test levels are required:
- Voltage dip by 100% to 0% of the nominal voltage for 10ms or. ½ period
- Voltage dip by 100% to 0% of the nominal voltage for 20ms respectively 1 period
- Voltage dip by 60% to 40% of the nominal voltage for 200ms respectively 10 periods
- Voltage dip by 30% to 70% of the nominal voltage for 500ms respectively 25 periods
- Voltage dip by 20% to 80% of the nominal voltage for 5000ms respectively 250 periods
Standard voltage dips
V 4780 S2 with automatic tap control
The transformer is an accessory to the following devices
- compact NX5 Nx,
12.9.1.2.
Device models V 4780
V4780
250 V 16 A, manual control
V4780 S1
250 V 16 A manual control additional tap at 120%
V4780 S2
250 V 16 A, automatic control
V4780 S3
250 V 32 A, manual control
12.9.1.3.
Control V4780 S2
The V4780 S2 is controlled through the analogue input (0...10Vdc). The control circuit switches to the related tap,
40%, 70% or 80%, proportional to the applied dc reference voltage (0...10V dc) to the output PF2.
Is the reference dc voltage out of the tolerance ( 0.25V), the control will not switch to any tap to the PF2 output.
Operating with ramps the control circuit will not select a tap, if the ramp (0-100%) is shorter than approx. 4s.
Programming longer ramps, each tap will switch on and off when the reference is in the valid range.
Voltage taps
DC reference voltage
80% of Vnom
8.00V  0.25V
70%
7.00V  0.25V
40%
4.00V  0.25V
Settings on compact NX5 for V4780 S2
The compact NX5 must be matched to the 0-10V input of the V4780. Therefore a V4780 must be configured as
a motor variac. For V and Vn must set to the same value which is the value of the voltage of your power supply.
Setup: EUT / SUPPLY Equipment tapped transformer
Settings
V
Vnom
Path
Maximum voltage
Example for 230V mains
230 V
230 V
PF1
230 V

EM TEST compact NX5 bsp-1-300-16 Specifications

General

Brand	EM TEST
Model	compact NX5 bsp-1-300-16
Category	Laboratory Equipment
Language	English