Test Equipment

Our company manufactures and supplies a set of test equipment intended for use in a synthetic circuit while testing high voltage alternating current circuit breakers for the making capacity. In combination with other test lab equipment, it is possible to implement a synthetic test circuit in which an alternating current source and a constant voltage source are used in accordance with IEC Publication (IEC 62271-101 “High-voltage switchgear and controlgear. Synthetic testing).

The equipment is supplied in two versions.

Version 1.

The equipment is intended for testing switch breakers for rated voltages of 100-362 kV.

 

The set consists of:

The Making device (one module).

The Charging device (300 kV) with a Charging resistor and a control panel.

 

 

 

 

Technical specifications of one unit of the Making device

  1. The charge voltage of the main capacitors of the unit is 60-300 kV.
  2. Rated making current – 16-80 kA.
  3. The peak of the switching current is up to 200 kA.
  4. Maximum duration of the making current flowing through the Making device:

– at an effective value of current ≤ 40 kA and peak ≤ 100 kA – 30 ms

– at an effective value of current ≤ 63 kA and peak ≤ 160 kA – 20 ms

– at an effective value of current ≤ 80 kA and peak ≤ 200 kA – 10 ms

  1. Delay time (not more than) is 10 microseconds.
  2. The Making device can withstand at least 70 making operations with a current of 80 kA (the effective value of the variable component) and at a current peak of 200 kA and at least 100 making operations at a current of 63 kA and less with a correspondingly reduced current peak, without changing the electrodes. The number of making operations with an aperiodic current component should not exceed 20%.

Note: at the peak of the making current ³ 100 kA, the Making Device must be additionally fixed with rigid insulating elements at the terminals (for example, with fiberglass rods).

  1. Dimensions of the module – 1.5 * 3 * 4.4 (h) m
  2. Weight (about) – 720 kg.

Appearance of one module of the Making device.

1 – spark gap unit;

2 – main capacitors;

3 – non-linear reactors;

4 – terminals;

5 – insulating rods;

6 – capacitors;

7 – frame with wheels.

 

The Charging device technical specifications:

  1. The maximum DC voltage (negative) is 300 kV
  2. The maximum current is 7 mA
  3. Power supply (single-phase, 50/60 Hz)

– voltage – 220 ± 22 V

– power – 3 kVA.

  1. Dimensions:

Rectifier – 0.95 * 0.95 * 2.8 (h) m

Control panel – 0.35 * 0.22 * 0.42 (h) m

Charging resistor – Æ 0.07 * 2.6 m

  1. Weight (not more than)

Rectifier – 400 kg

Control panel – 20 kg

Charging resistor – 15 kg

Version 2.

The equipment is designed for testing of switch breakers for rated voltages of 100-550 kV.

 

The set consists of:

The Making device (two modules).

The Charging device (450 kV) with a charging resistor and a control panel.

 

 

 

Technical data of two (included in series) modules of the Making Device:

 

  1. The charge voltage of the main capacitors of the modules is 60-420 kV.
  2. Rated making current – 16-80 kA.
  3. The peak of the making current is up to 200 kA.
  4. Maximum duration of the making current flowing through the Making device:

– at an effective value of current ≤ 40 kA and peak ≤ 100 kA – 30 ms

– at an effective value of current ≤ 63 kA and peak ≤ 160 kA – 20 ms

– at an effective value of current ≤ 80 kA and peak ≤ 200 kA – 10 ms

  1. Delay time (not more than) is 10 microseconds.
  2. The Making device can withstand at least 70 making operations with a current of 80 kA (the effective value of the variable component) and a current peak of 200 kA and at least 100 making operations at a current of 63 kA and less with a correspondingly reduced current peak, without changing the electrodes. The number of making operations with an aperiodic current component should not exceed 20%.

Note: at the peak of the switching current ³ 100 kA, the Making device must be additionally fixed with rigid insulating elements at the terminals (for example, with fiberglass rods).

 

The appearance of two, sequentially-connected modules of the Making Device

1 – spark gap unit;

2 – main capacitors;

3 – non-linear reactors;

4 – terminals;

5 – insulating rods;

6 – capacitors;

7 – frame with wheels.

 

 

The Charging device technical specifications:

  1. The maximum DC voltage (negative) is 450 kV
  2. The maximum current is 5 mA
  3. Power supply (single-phase, 50/60 Hz)

– voltage – 220 ± 22 V

– power – 3 kVA.

  1. Dimensions:

Rectifier – 0.95 * 0.95 * 3.2 (h) m

Control panel – 0.35 * 0.22 * 0.42 (h) m

Charging resistor – Æ 0.07 * 2.6 m

  1. Weight (not more than)

Rectifier – 420 kg

Control panel – 20 kg

Charging resistor – 15 kg

 

Scheme of synthetic tests using the Making Device

Synthetic making circuit.

 

CS    –       current source

VS    –      charge voltage source

TB    –       test circuit-breaker

MD   –     Making Device

G       – surge generator

T       –      transformer

GMS –  generator make switch

CD     – charging device

CR     – charging resistor

CP      – control panel

MS     – make switch

Ca, Cd – capacitors

Rd          – resistor

IC       – initial transient making circuit (if required)

VD1, VD2  – voltage dividers

S        –     current shunt.