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Low-voltage intelligent harmonic suppression power capacitor compensation device (thyristor)

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Product Introduction

I. Product overview

This low-voltage intelligent harmonic suppression power capacitor compensation device is a new generation of 0.4KV, 50Hz low-voltage power distribution high-efficiency energy saving, line loss reduction, power factor improvement and power quality harmonic reactive power compensation equipment. It consists of an intelligent measurement and control unit, a line protection unit, a (△ type) or a (Y type) low-voltage power capacitor and reactor. It replaces the conventional automatic reactive harmonic suppression compensation device composed of fuses, composite switches or mechanical contactors, thermal relays, low-voltage power capacitors, indicators and other loose parts connected by wires in the cabinet and on the cabinet surface. It has changed the structure mode of traditional reactive power compensation device which is bulky and heavy, thus making a new generation of low-voltage reactive power compensation equipment with better compensation effect, smaller volume, lower power consumption, cheaper price, more cost saving, more flexible use, more convenient maintenance, longer service life and higher reliability, adapting to the higher requirements of modern power grid for reactive power compensation.

The low-voltage intelligent harmonic suppression power capacitor compensation device adopts a customised segment LCD display, which can display the busbar voltage, the total harmonic content of the voltage, the temperature of the capacitor, the reactive power and the capacitor's throwing status in real time.

The low-voltage intelligent harmonic suppression power capacitor compensation device automatically searches for the best input (removal) point through the internal thyristor switching circuit to achieve arc-free switching; it ensures over-zero switching, no inrush current, no contact sintering, micro energy consumption, no harmonics, and at the same time has protection functions such as anti-interference and power shortage, especially suitable for switching capacitors during reactive power compensation, in addition, the thyristor is also configured with a heat sink, so that the performance is more In addition, the thyristor is also equipped with a heat sink, so that the performance is more stable and the life span is further extended.

II. Conditions of use.

Elevation	≤2000m
Ambient temperature	-25 to 55°C
Relative humidity	40°C, 20 to 90%
Atmospheric pressure	79.5 to 106.0 Kpa
Environmental conditions	No conductive dust and corrosive gases in the surrounding badlands, no flammable and explosive media, indoor type.

III. Technical parameters.

3.1 Power conditions.

Rated voltage	AC 380V
Allowable Deviation	±20%
Voltage waveforms	Sine wave with a total distortion of not more than 5%
Industrial frequency	48.5 to 51.5 Hz
Power consumption	<0.5W (when removing capacitors), <1W (when putting in capacitors)

3.2 Safety requirements.

Meet the relevant requirements of GB/T15576-2008 "Low-voltage complete reactive power compensation device".

3.3 Measurement errors.

Voltage	±0.2%
Current	±0.2%
Active power	±0.5%
Reactive power	±0.5%
Frequency	±0.2%
Power Factor	±0.5%

3.4 Protection errors.

Voltage	≤0.5%
Current	≤1.0%
Temperature	±1°C
Time	±0.01s

3.5 Parameters for reactive power compensation.

Reactive power compensation error	≤ 75% of the minimum capacity
Capacitor cut-off interval	>10s
Reactive capacity	Single unit ≤ 40kvar

3.6 Reliability parameters.

Controlling accuracy	100%
Capacitor capacity runtime decay rate	≤1%/year
Capacitor capacity dropout decay rate	≤ 0.1% / 10,000 cycles
Annual failure rate	0.1%

*Please specify any other special requirements and performance parameters when ordering.

3.7 Outline drawing of thyristor-throwing switch

3.8 Thyristor product selection table (general parameters)

FTZM-L Vertical splitting type
Product specifications	Toggle Switch	System Voltage	Installation Capacity	Base-wave output capacity	Capacitor Rated voltage	Approximate weight kg	External dimensions (mm)
Product specifications	Toggle Switch	kv	kvar	kvar	kv	Approximate weight kg	A	B	C	D	E	F	G
FTZM-L-0.28-10/7-J-F	Thyristor	0.22	10	6.64	0.28	28	185	228	480	510	470	345	208
FTZM-L-0.28-20/7-J-F	Thyristor	0.22	20	13.3	0.28	30
FTZM-L-0.28-30/7-J-F	Thyristor	0.22	30	19.91	0.28	33
FTZM-L Vertical type (co-patch type)
FTZM-L-0.48-20/7-J	Thyristor	0.4	20	14.5	0.48	29	185	228	480	510	470	345	208
FTZM-L-0.48-30/7-J	Thyristor	0.4	30	22.4	0.48	31
FTZM-L-0.48-33.5/7-J	Thyristor	0.4	33.5	25	0.48	35
FTZM-L-0.48-40/7-J	Thyristor	0.4	40	30	0.48	38

*Due to the possibility of dimensional updates, orders are subject to the production of official drawings.

3.9 Low-voltage intelligent harmonic suppression power capacitor compensation device wiring schematic (common complementary diagram)

3.10 Low-voltage intelligent harmonic suppression power capacitor compensation device wiring schematic (sub-complementary diagram)

IV. Notes on selection:

* Special specifications with different parameters can be designed to order according to customer requirements.

- Low-voltage intelligent harmonic suppression power capacitor compensation device (thyristor)

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