Products Categories

Dual Output Switching Power Supply

Single Output Waterproof Power Supply

DR Single Output Industrial DIN Rail Power Supply

HSP Series Single Output Switching Power Supply with PFC Function

S Single Output Switching Power Supply

HSCP Series UPS Battery Charger Type Switching Power Supply

HS HRs single output switching Power supply

HD11G Series (Special for Photovoltaic Applications),Rated Operating Voltage AC380,Knife Switch Disconnctor

HHT10 Series Bar-type Vertical Fuse Switch Disconnector,Three Phase From 160A to 630A Factory Directly,Rated Working Voltage 690V

LMK1(BH)-0.66 current transformer,bus bar ABS shell,Measurement of energy

0102030405

LZZB9-24/220b/2(4) 24kV Dry Type Current Transformer | Manufacturer

The LZZB9-24/220b/2(4) series current transformers are suitable for power systems with a rated frequency of 50Hz or 60Hz and a rated voltage of 20kV, and are used for electric energy metering, current measurement and relay protection.

The product execution standards are GB20840.1-2010 and GB20840.2-2014.

Preview Data Contact us

Product Detail

Dimensional Drawing

Model and its meaning

LZZB9-24-220b-2(4).jpg

Summarize

Measurement accuracy is another crucial aspect of current transformers that cannot be ignored. 15-40.5kV indoor current transformers can achieve measurement accuracy of 0.2 seconds or 0.5 seconds, which is essential for accurately converting large primary currents into controllable secondary currents. This accuracy is critical for electricity metering and current measurement, as it ensures the reliability of the collected data and its practical application value. In an era where energy efficiency and accurate billing are paramount, the role of high-precision current transformers is becoming increasingly prominent.

Current transformers have applications far beyond measurement; they are an integral part of relay protection systems, ensuring the safety of the power grid. By providing accurate current readings, these transformers enable protective relays to operate effectively, ensuring the timely detection and handling of any anomalies in the power system. This protective capability is crucial for preventing equipment damage and maintaining the overall integrity of the power infrastructure.

Normal service condition

Installation site: Indoor.

Ambient temperature: Maximum air temperature 40℃; The minimum temperature is -5℃ . The daily average temperature does not exceed 30℃ .

Atmospheric conditions: There is no severe pollution in the atmosphere.

Technical parameter

LZZB9-24/220b/2 technical parameter table of type Current transformer

Product model	Rated primary current	Accuracy level combination	Rated output	Rated short-term thermal current	Rated dynamic stability current
LZZB9-24/220b/2	20	0.2/0.2 0.2/0.5 0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15	10/10 10/10 10/20 10/20 10/15 10/15	3	7.5
	30			4.5	11.25
	40			6	15
	50			7.5	18.75
	75			11.25	28.125
	100			15	37.5
	150			22.5	56.25
	200			31.5	80
	300			45	112.5
	400
	500
	600	0.2/0.2 0.2/0.5 0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15	10/10 10/10 10/20 10/20 10/15 10/15	63	130
	800			63	130
	1000			80	160
	1200
	1250
	1500	0.2/0.2 0.2/0.5 0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15 0.2S/10P30	10/10 10/10 10/20 10/20 10/15 10/15 15/15	100	160
	1600
	2000
	2500

LZZB9-24/220b/4 technical parameter table of type Current transformer

Product model	Rated primary current	Accuracy level combination	Rated output	Rated short-term thermal current	Rated dynamic stability current
LZZB9-24/220b/4	20	0.2/0.2/0.2 0.2/0.5/0.5 0.2/10P10/10P10 0.5/10P10/10P10 0.2/10P15/10P15 0.5/10P15/10P15 0.2S/0.5/5P30/5P30	15/15/20 15/20/20 10/20/30 15/20/30 10/15/20 15/15/20 15/15/15/15	3	7.5
	30			4.5	11.25
	40			6	15
	50			7.5	18.75
	75			11.25	28.125
	100			15	37.5
	150			22.5	56.25
	200			31.5	80
	300			45	112.5
	400
	500
	600	0.2/0.2/0.2 0.2/0.5/0.5 0.2/10P10/10P10 0.5/10P10/10P10 0.2/10P15/10P15 0.5/10P15/10P15 0.2S/0.5/5P30/5P30	15/15/20 15/20/20 10/20/30 15/20/30 10/15/20 15/15/20 15/15/15/15	63	130
	800			63	130
	1000			80	160
	1200
	1250
	1500	0.2/0.2/0.2 0.2/0.5/0.5 0.2/10P10/10P10 0.5/10P10/10P10 0.2/10P15/10P15 0.5/10P15/10P15 0.2S/0.5/5P30/5P30	15/15/20 15/20/20 10/20/30 15/20/30 10/15/20 15/15/20 15/15/15/15	100	160
	1600
	2000
	2500

Rated secondary current: 5A or 1A.

Rated insulation level: 24/65/125kV.

Structure and characteristics

This series of current transformers are of fully enclosed structure with epoxy resin casting, featuring excellent insulation performance and moisture-proof capability. The product features a compact structure, small size, light weight and easy surface cleaning. A terminal box is installed at the secondary output terminal, which is safe and reliable. There are grounding bolts and six installation holes for installation on the product base plate.