NDSDL-1000A Temperature Rise Test Device

发布时间：2019-08-08

I. Technical Specifications

1. Main body of the NDSDL-24 kVA/1000 A high-current generator

The main body of the high‑current generator consists of three single‑phase, 8 kVA output transformers. The specifications for each unit are as follows:

Single-unit capacity: 8 kVA (Total capacity: 24 kVA)

Input power: AC 220 V (one neutral wire and one live wire)

Input current: 36.4 A

Output open-circuit voltage: 8 V

Output current: 1000A

Operating time: 30 minutes, interval operation

Cooling method: Natural cooling

For three individual transformers, the winding polarities and winding directions must be identical; the impedance deviation of each unit shall be less than 3%; and both the input and output connections shall be star‑connected.

2. The accompanying NDTC-24 kVA/1000 A control console consists of:

The control console for the three-phase high-current generator comprises one 24 kVA three-phase contact-type voltage regulator, three 0.5 kVA fine‑adjustment voltage regulators, three 0.5 kVA fine‑adjustment transformers, and main control electrical components. It features an aluminum alloy panel and a 1000 A digital display meter. The main technical parameters are as follows:

Total actual configured three-phase capacity: 24 kVA

Input power: three-phase four-wire, 380 V

Input current: 36.4 A

Output phase voltage: 0–220 V (adjustable)

Single-phase voltage unbalance: 20%

The input power supply is connected in a star configuration.

The output voltage is a three-phase star-connected output.

Current resolution: 1 A

Cooling method: Natural cooling

3. Composition of console accessories:

Four 16-square‑mm power cables

One grounding wire