HZXB-1350kVA/270kV AC Series Resonance Test Equipment-Huazheng Electric Manufacturing (Baoding) Co., Ltd

ac resonant test system

HZXB-1350kVA/270kV Technical specifications

260kV--Meet the AC voltage withstａnd test of 230kV cable;

Operating frequency: 30-300Hz,

Test voltage 260kV Test time 60min;

Output voltage waveform distortion rate: <1.0％

Allowable continuous working time: 60 minutes at a time under rated conditions;

Quality factor of the device itself: Q≥30(f=45Hz)

Device output waveform: Sine wave

Input power: Three-phase 380V

Frequency adjustment range: 30Hz～300Hz

System measurement accuracy: 1.5％

The device has protection functions such as over voltage, over current and zero start

Equipment configuration and technical parameters

Variable-frequency power source/1 set

Rated power: 75kW;

Input voltage: Three-phase 380V 50Hz

Output voltage: 0～400V adjustable

Output voltage frequency: 30～300Hz

0.1Hz, the step is adjustable

Frequency instability ≤0.02%

Output current: 0～187.5A

High voltage reactors (12 sets in total)

Rates capacity: 112.5kVA

Rated operating voltage: 45kV

Rated working current: 2.5A

Rated inductance: 75H

Continuous working hours: 60min

Temperature rise: ＜65k

Operating frequency: 30~300Hz

Excitation transformer/1 set

Rated capacity: 75kVA

Input voltage: 0～400V

Output voltage: 3/6/15kV

Output current: 25/12.5/5A

Capacitive voltage divider/1 set

Rated voltage: 270kV

Capacitance: 1000pF

Operating frequency: 30～300Hz

Uncertainty: 1.5%

Test line and accessories/1 set

Application

(Ⅰ) Ac voltage resistance of the cable

product-695-373

(Ⅱ)Frequency conversion series resonance test wiring diagram

product-857-377
(Ⅲ) The table of the experimental configuration of the test products

device combination

Test subjects

Electric reactor

112.5kVA/45kV

Twelve joints

excitation transformer output selection

Test voltage(kV)

230kV/800mm2 cable 0.5km

Use six reactors

each Two in series, then parallel

15kV

≤260kV

Packing List

No.	Item		Specifications And Models	Unit	Qty.	Notes
1	Variable-frequency power source		HZXB-F-75kW/380V	SET	1	Equipped with matching dust cover/wooden box
2	Excitation transformer		HZJLB-75kVA/3/6/15kV/0.4kV	SET	1	Equipped with matching dust cover/wooden box
3-14	High voltage reactor		HZDK-112.5kVA/45kV	SET	12	Equipped with matching dust cover/wooden box
15	Capacitive voltage divider		HZFRC-270kV/1000pF	SET	1	Equipped with matching aluminum box/wooden box
Accessories
18	Internal connections	Power input cable	50mm²*5m	PCS	3	Both ends Ø10 brass nose
		Power output cable	50mm²*3m	PCS	2	Both ends Ø10 brass nose
		Grounding wire	Copper braid 4mm²*10m(Both ends Ø10 brass nose)	PCS	1	From the device to geodetic network
			Copper braid 4mm²*3m(Both ends Ø10 brass nose)	PCS	1	From the variable frequency power source to excitation transformer
			Copper braid 4mm²*5m(Both ends Ø10 brass nose)	PCS	1	From excitation transformer to voltage divider
		Reactor series cable	2.1mm²*250mm	PCS	12	For reactor series connection
		Reactor parallel cable	30kV/5m silicone wire	PCS	1	For reactor parallel connection-lower ends
		Reactor parallel cable	Ø100*5m( Use 1.5mm2 flexible cord in the middle)	PCS	1	For reactor parallel connection-upper ends
		Reactor series cable	Ø100*3m( Use 1.5mm2 flexible cord in the middle)	PCS	2	For reactor series connection
		Voltage equalizing cable	2.1mm²*500mm	PCS	2	From reactor to equalizing ball