Composition of 200/500 Power Frequency Test Transformer Complete Set
This complete set of equipment is mainly used for power frequency withstand voltage, partial discharge tests, and scientific research tests on power products below some 220kV voltage levels, such as instrument transformers, power transformers, high-voltage circuit breakers, cable accessories, and other test objects.
II. Operating Conditions
Altitude: ≤1000m
Ambient temperature: -20℃ to +40℃
Relative air humidity: ≤90% (25℃)
No conductive dust
No fire or explosion hazard
No gases that corrode metals and insulation
The power supply voltage waveform is an actual sine wave, with a waveform distortion rate of <3%
A reliable grounding point is provided, with grounding resistance <0.5Ω
Installation location: indoor
III. Technical Standards Followed
JB/T9641-1999 Test transformers
GB1094.1-1996 Power transformers - Part 1: General
GB/T.311.1-1997 Insulation and coordination of high-voltage transmission and transformation equipment
· GB/T16927.1-1997 High-voltage test techniques - Part 1: General test requirements
GB/T16927.2-1997 High-voltage test techniques - Part 2: Measuring systems
GB/7354-87 Partial discharge measurement
· GB/T509-1991 Guide for power transformer tests
· GB2536-1990 Transformer oil
· GB7328-87 Measurement of sound level of transformers and reactors
· JB8749-1998 General technical requirements for voltage regulators
IV. Composition of 200/500 Power Frequency Test Transformer Complete Set
200/500 Power frequency partial discharge-free test transformer 1 unit
200/0.38/0～3.0 Column-type voltage regulator 1 unit
300/500 Capacitive voltage divider combined with coupling capacitor 1 set
GR500-0.4/5 Power frequency protective resistor 1 piece
AC-2008S Test control console 1 unit
GLB-200/3.0 Isolation filter transformer 1 set
KZ-3 High-voltage switchgear cabinet
