Highvolt Impulse Voltage Test System (1000KV to 6000KV)

Features

The impulse voltage generators / series G are the main component of impulse voltage test systems, series G (see Data Sheet 3.10), ranging from 1000 kV up to 6000 kV cumulative charging voltage.

They are designed for testing high voltage equipment of power systems with lightning impulses (LI: 1.2/50 µs) and switching impulses (SI 250/2500 µs) according to the IEC standard 60060-1 (IEEE St.4). The maximum charging voltage is 200 kV per stage with a maximum energy of 30 kJ per stage. With 30 stages, maximum output voltages of 5700 kV (+/-LI) and 4500 kV (-SI) can be generated in the no-load case.

The impulse voltage generators can be modified for carrying out a variety of special tests, e.g. on transformers, impulse current testing of surge arresters and even components of wind generators or air planes as well as EMP tests of electrical equipment. The chosen modular system enables a very variable application in industries as well as in laboratories for research and education.

The circuit of the impulse voltage generators is a modified Marx multiplier circuit. The impulse capacitors, arranged in the stages of the generator, are charged with positive and negative DC voltages up to 100 kV each against earth potential and, in order to generate impulses, connected in series by spark gaps. For the adjustment of the front time and time to half value of the approximately double-exponential impulses, the generator stages comprise appropriate front resistors and tail resistors. A short discharge loop guarantees low internal inductances and smooth voltage shape.

All components of the impulse generator are supported by four insulating columns made of glass-fiber reinforced plastic. A stable construction is achieved by rectangular frames in each generator stage. In each third stage there is a folding platform that can be entered for a convenient changing-over of the resistors. These platforms are accessible without risk via an insulating ladder throughout all generator stages. The switching spark gaps of all stages are commonly housed inside a fifth insulating column with a slight air over-pressure to guarantee clean air for a safe triggering. For safe operation, the test generator is equipped with two earthing switches and two motor driven earthing ropes, which additionally short-circuit all impulse capacitors after the generator is switched off.

The four insulating columns are placed on a common sectional steel base which can be designed either as stationary or as a mobile type. The frame carries also the DC generator including the cubicle for the thyristor controller.

SKU: High Volt

Category: High Voltage Lab Equipment, High Volt

Product Details

Table 1: Electrical Main Parameters

Stage Energy (1) 2.5 kJ 5 kJ
Total Charging Voltage (KV) Number of Stages
Total Charging Energy (kJ)
Impulse Capacitance (nF)
Total Charging Energy (kJ)
Impulse Capacitance (nF)
10005100200.0150300.0
12006120167.0180250.0
14007140143.0210214.3
16008160125.0240187.5
18009180111.0270166.7
200010200100.0300150.0
22001122090.9330136.4
24001224083.3360125.0
26001326076.9390115.4
28001428071.4420107.1
30001530066.7450100.0
32001632062.548093.8
34001734058.851088.2
36001836055.654083.3
38001938052.657078.9
40002040050.060075.0
42002142047.663071.4
44002244045.566068.2
46002346043.569065.2
48002448041.772062.5
50002550038.575060.0
52002652038.578057.7
54002754037.081055.6
56002856035.784055.6
58002958034.587051.7
60003060033.3900050.0
Min. time difference between impulses
40 s60 s
Capacitors per generator stage2x2uF/100 kV
2x3.0uF/100 kV

*) Only stationary

1) Other stage energies resp. other min. time difference between impulses on request.

Main Parameters

Total charging voltage: 1000 to 60000 kV

Total charging energy: 100 to 900 kJ

Stage charging voltage: 200 kV

Stage energy: 20, 30 kJ

Number of stages: 5 to 30

Table 2: Dimensions, weights

Total charging voltage
Number of stages
Height H installation
Base frame Length x Width LxB mm
Weight kg
KVmm

Stage energy 20 kJ

Stage energy 30 kJ
Stage energy 20 kJ
Stage energy 30 kJ
1000544403200 x 26503200 x 265036804450
120065095

43605300
140075750

48505940
160086405

53306580
180097060

58707270
2000107715

63507910
2200118370

68408550
2400129025

73709240
2600139680

78609880
28001410335

834010520
30001510990

888011210
32001611645

936011850
34001712300

985012490
36001812955

1038013180
38001913610

1087013820
40002014265

1135014460
42002114920

1189015150
44002215575

1237015790
46002316230


1286016430
48002416885


1339017120
50002517540

1388017760
52002618195

1436018400
54002718850

1490019090
56002819505

1538019730
58002920160

1587020370
60003020815

1640021060

Safety clearance D (see dimensional drawing)

D is approximately height H / 2.

Please note:

D depends on wave shape (LI, SI,..), dimension of top electrode and dimension of test hall.

Mobility

As an option, impulse voltage generators are moveable up to 4000 kV, preferably with air cushions on smooth horizontal floor.

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