Power frequency withstand voltage test system

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Application:

The set of YDTCW-300kVA/2×300kV frequency test transformer suitable for switchgear, bushings, transformers, transformers and insulators such as sample frequency voltage withstand test.

Conditions:

• Altitude: ≤1000m
• Ambient temperature: -10℃～＋40℃
• Relative humidity: ≤90%（25℃）
• The maximum daily temperature difference 15℃
• Seismic capacity: 8 grade bifida
• Indoor
• No conductive dust
• No fire and explosion hazard
• No corrosive metal and no insulation gas
• There is a reliable ground point. Ground resistance: <0.5Ω

Normative references

IEC60076-1	Power transformers – Part 1: General.
IEC60076-3	Power transformers – Part 3: Insulation levels and dielectric tests.
IEC60071-1	Insulation co-ordination – Part 1: Definitions, principles and rules.
IEC60060-1	High-voltage test techniques. Part 1: General definitions and test requirements.
IEC60060-2	High voltage test techniques – Part 2: Measuring systems.
IEC60270	High-voltage test techniques-Partial discharge measurements

Components

1	YDTCW-150/300－II power transformer upper	1 pic
2	YDTCW-150/300－II power transformer lower	1pic
3	TAWF-500/600 capactive&coupling divider	1 set
4	GR600-0.5/10 resister	1 pic
5	TYDZ-300/0.38/0～0.65 regulator	1 set
6	AC-2011 control&measurement system	1 set
7	Control&measurement cable and all components.	1 set
8	LBQ-300/0.6 power filter	1 set

Main technical parameters

AC test transformer

Type：YDTCW-150/300×2

• Phase：Single phase
• Frequency ： 50Hz
• Rated capacity：300kVA
• Rated voltage： 600kV
• Rated input voltage 0.6 kV Rated output voltage 600kV
• Rated input current 500A Rate output current 0.5A
• Impedance voltage ＜15% (two stage)
• Partial discharge: Partial discharge less than 10 pC with100% rated voltage.
• Less than 5 pC with 80% rared voltage.

YDTCW-150/300-Ⅱ power transformer upper

• Phase：single phase
• Frequency：50Hz
• Rated capacity: Low voltage winding 150kVA / High voltage winding 150kVA
• Rated voltage: Low voltage winding 0.6kV / High voltage winding 300kV
• Rated current: Low voltage winding 150*2A / High voltage winding 0.5A
• AC insulation level: 330kV/1min
• Short current impendance ≤5％

YDTCW-150/300- I power transformer lower

• Phase：single phase
• Frequency：50Hz
• Rated capacity: Low voltage winding 300kVA / High voltage winding 300kVA
• Rated voltage: Low voltage winding 0.6kV / High voltage winding 300kV
• Rated current: Low voltage winding 250*2A / High voltage winding 0.5A
• AC insulation level: 330kV/1min
• Short current impendance ≤4％

TYDZ-300/0.38/0～0.65 Regulator

Type：TYDZ-300/0.38/0～0.65

• Phase：single phase
• Frequency：50Hz
• Rated input voltage 0.38kV / Rated output voltage 0¬0.65kV
• Rated input current: 50A / distortion ≤3％
• Shout current impendance ≤ 7％( within 50%-100% adjust range)

TAWF-500/600 capactive&coupling divider

Type：TRF500-600

• Rated frequency：50Hz
• Rated capacity ：500pF
• Rated voltage：600kV
• Nominal divider ratio：2000:1
• Dielectric loss: ＜0.5%
• Uncertainly: ≤±1％

GR600-0.5/10 resister

Type：GWR600-0.5-10

• Frequency：50Hz
• Rated voltage：600kV
• Rated current：0.5A
• Resister：10kΩ

LBQ-300/0.6 power filter

Type: LBQ-300/0.6

• Rated capacity: 300kVA
• Rated voltage: 0.6kV
• Power frequency: 50Hz

Control system

This control system is developed by button or OMRON CJ series PLC with computer as its cybernetics core. The whole control system has adopt the optical isolation and switch isolation technology reasonably, which makes the I/O of PLC always work in the completely isolated low voltage environment, and has highly improved the security and reliability of the control system

• Setting Range 0 - 600kV(According to the actual test equipment）
• Adjustment Accuracy 0.1kV
• Setting Range 1~9999s
• Adjustment accuracy 1s
• Alarm delay 2s
• Inconsistency of withstand voltage is not more than ±1%
• Inaccuracy of withstand voltage is not more than ±1%
• Input power voltage three phase 380V AC±10%

Documents

All techniques parameter component of generator and installation drawing

Factory report.

Technical Parameters

model	Rated Capacity(KVA)	High Voltage(KV)	Low Voltage(KV)	Max.diameter(mm)	Weight (kg)
YDTW-5/50	5	50	0.22/0.38	Φ320X 450	42
YDTW-50/50	50	50	0.22/0.38	Φ850X945	360
YDTW-10/100	10	100	0.22/0.38	Φ570X725	150
YDTW-50/100	50	100	0.22/0.38	Φ850X 1000	400
YDTW-100/100	100	100	0.22/0.38	Φ850X 1000	800
YDTW-15/150	15	150	0.22/0.38	Φ1165X 1400	500
YDTW-75/150	75	150	0.22/0.38	Φ1350X 1570	1100
YDTW-150/150	150	150	0.38/0.6	Φ1350X 1570	1400
YDTW-20/200	20	200	0.22/0.38	Φ1165X 1850	760
YDTW-100/200	100	200	0.22/0.38	Φ1450×1950	1800
YDTW-200/200	200	200	0.38/0.6	Φ1800×1950	3100
YDTW-25/250	25	250	0.22/0.38	Φ1250X2200	1150
YDTW-250/250	250	250	0.38/0.6	Φ2000×2200	3100
YDTW-500/250	500	250	3/6.	Φ2000×2600	5800
YDTW-1000/250	1000	250	3/6.	Φ2200×2600	8200
YDTW 30/300	30	300	0.22/0.38	Φ1350X2300	1350
YDTW 150/300	150	300	0.38/0.6	Φ1450X2500	2100
YDTW 300/300	300	300	0.38/0.6	Φ1700X2500	3700
YDTW 600/300	600	300	0.6/3	Φ2000×2650	6100
YDTW 900/300	900	300	3/6.	Φ2000×2650	7400
YDTW 1200/300	1200	300	3/6/10.	Φ2200×2800	8800
YDTW 350/350	350	350	0.6/3/6	Φ2000×2800	3600
YDTW-375/375	375	375	0.6/3	Φ2000×3200	4000
YDTW-750/375	750	375	0.6/3/6	Φ2000×3400	9600
YDTW-400/400	400	400	0.6/3	Φ2000×3500	4100
YDTW-800/400	800	400	3/6.	Φ2200X3600	10000
YDTW-1200/400	1200	400	3/6.	Φ2600×4200	12000
YDTW-1600/400	1600	400	3/6/10.	Φ2600×4200	16000
YDTW-150/500	150	500	0.6/3	Φ2600X 4500	6800
YDTW-250/500	250	500	0.6/3	Φ2600X 4500	7800
YDTW-500/500	500	500	0.6/3	Φ2600x4S00	9800
YDTW-1000/500	1000	500	3/6.	Φ3000X 4600	16000
YDTW-2000/500	2000	500	3/6/10.	Φ3000X 4600	23000
YDTW-165/550	165	550	0.6/3	Φ3400X 5000	9100
YDTW-550/550	550	550	3/6/10.	Φ3400X 5000	14000
YDTW-1100/550	1100	550	3/6/10.	Φ3400X 5100	22000
YDTW-2200/550	2200	550	3/6/10.	Φ3400X 5100	31000
YDTW-300/600	300	600	0.6/3/6	Φ3400X 5000	7600
YDTW-600/600	600	600	3/6/10.	Φ3400X 5000	16000
YDTW-2400/600	2400	600	3/6/10.	Φ3400X 5100	26000
YDTW-4800/600	4800	600	6/10.	Φ3400X 5100	35000