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Meidensha ZL-8A Series Distribution Class Surge Arresters

kvt part2 — Thu, 16 Apr 2020 08:34:15 +0000

Manufacturer: Meidensha Corporation
Model: ZL-8A Series

Features

A practical simple single gap and high performance zinc oxide blocks ensure that this surge arrester is compact and light weight. A reduced discharge voltage has improved the protective performance. Hardly any change in performance of the gap due to contamination, it maintains its stable operatimg performance, protecting distribution equipment from surge voltages.
Excellent protective performance
Managing multiple lightning surges and frequent surges
Excellent resistance to contamination
Compact, lightweight, and easy to handle

Applications and Solutions

It is an arrester for distribution substation for 6 kV system of nominal discharge current 2,500 A.

Specifications

Characteristics of SORESTER for distribution substation

ZL-8A	ZL-8AX	ZL-8AX-M
Type		standard type	contamination resistant type	contamination resistant type (with a mold cone)
Resistance against contamination (salt content attachment density mg/cm2)		0.06	0.35	0.35
Rated voltage(kV, r.m.s.)		8.4
Nominal discharge current(A, peak value)		2500
Commercial frequency discharge start voltage(kV, r.m.s.)		13.9 or more (15 or more)
Voltage resistance (container only)	Commercial frequency (kV, r.m.s.)	22		22(28)
Voltage resistance (container only)	Lightning impulse (kV, peak value)	60		60(90)
Lightning impulse discharge start voltage (kV, peak value)	100%	33 or less (30 or less)
Lightning impulse discharge start voltage (kV, peak value)	0.5µs	38 or less (33 or less)
Discharge voltage (8/20 µs, 2,500 A) (kV, peak value)		33 or less (22 or less)
Rated discharge withstand current	Lightning impulse heavy current (kA) (4/10 µs)	10 X 2 times (50 X 2 times)
Rated discharge withstand current	Square wave (A) (2 ms)	75 X 20 times (150 X 20 times)
Lightning surge operation duty(8/20 µs, 2,500 A)		Same polarity and reverse polarity, each 5 times

*The value in parentheses represents characteristics of SORESTER superior to the JEC-203 standard value.

The post Meidensha ZL-8A Series Distribution Class Surge Arresters first appeared on Kouei Japan Trading | Get Quotation.

Meidensha Polymer Insulator Type Surge Arresters

kvt part2 — Thu, 16 Apr 2020 08:26:19 +0000

Manufacturer: Meidensha Corporation

Features

Direct molding type polymer surge arresters, using silicone rubber with lasting water repellency. Unlike porcelain type surge arresters, there will be no scattering of porcelain pieces if damaged. Significantly smaller and lighter in weight than porcelarin type surge arresters, offering flexibility in installation space.
Silicone rubber housing with excellent water repellency
Compact and light weight through direct molding
Compact and light weight offering flexibility in choosing installation spaces

The post Meidensha Polymer Insulator Type Surge Arresters first appeared on Kouei Japan Trading | Get Quotation.

Meidensha ZSE-E Series Porcelain Insulator Type Station Class Surge Arresters

kvt part2 — Thu, 16 Apr 2020 08:03:21 +0000

Manufacturer: Meidensha Corporation
Model: ZSE-E Series

Features

A special air-tight sealing structure, developed over many years of experience, makes these very reliable surge arresters. Compact and light weight, these arresters help improve work efficiency during installation.
Surge arresters compliant with IEC standards (IEC60099-4)
Highly reliable surge arrester using zinc oxide blocks
A special air-tight sealing structure
Compact and light weight

Specifications

Type of SORESTER	ZSE-E1	ZSE-E2	ZSE-E3
Rated voltage: Er(kV)	3 ~ 198	18 ~ 444	240 ~ 444
Max. continuous operating voltage(kV)	0.78Er	0.78Er	0.78Er
Nominal discharge current(kA)	10	10	20
Line discharge class	2	3	4
Discharge current withstand capability (4/10μs, 2 shots)(kA)	100	100	100
Energy absorption capability (kJ/kV-arrester rating, within one minute)	4.5	7.5	9.5
Pressure relief current(kA)	40	40	40
Residual voltage level at nominal discharge current (per unit of kV rating)	2.74	2.45	2.53

The post Meidensha ZSE-E Series Porcelain Insulator Type Station Class Surge Arresters first appeared on Kouei Japan Trading | Get Quotation.

Meidensha ZSE-GFT Series Gas Insulated Metal Enclosed Station Class Surge Arresters

kvt part2 — Thu, 16 Apr 2020 07:59:27 +0000

Manufacturer: Meidensha Corporation
Model: ZSE-GFT Series

Features

A gas-insulated metal-enclosed surge arrester compliant with IEC standards. Zinc oxide block units alone are also available. Meiden high resistance blocks reduce the height of the surge arrester significantly. The series is availalbe for use in upto 500 kV systems.
Compliant with IEC standards (IEC60099-4)
Compact and light weight with high resistance blocks
Zinc oxide block units alone available

The post Meidensha ZSE-GFT Series Gas Insulated Metal Enclosed Station Class Surge Arresters first appeared on Kouei Japan Trading | Get Quotation.

Meidensha ZSE-GQ Series Oil Immersed Type Surge Arresters

kvt part2 — Thu, 16 Apr 2020 07:58:47 +0000

Manufacturer: Meidensha Corporation
Model: ZSE-GQ Series

Features

This series of products use zinc oxide blocks specially designed for use in high temperature oil. The built-in design for transformers offers a better economical solution than external mounting porcelain type surge arresters. This design also provides better protective performance because it connects the arresters directly to the equipment to be protected.
Oil immersed type surge arresters compliant with IEC standards (IEC60099-4)
Incorporating zinc oxide blocks designed for use in high temperature oil
Improving protective performance

The post Meidensha ZSE-GQ Series Oil Immersed Type Surge Arresters first appeared on Kouei Japan Trading | Get Quotation.

Meidensha ZC-B1M Type Surge Counters With Leakage Current Meter

kvt part2 — Thu, 16 Apr 2020 06:20:45 +0000

Manufacturer: Meidensha Corporation
Model: ZC-B1M Type

Features

The ZC-B1M displays the leakage current in real time as well as the number of recorded surges arrester operations. An increase in the leakage current level indicates there is abnormality in the surge arrester. This can be checked at any time during a regular inspection with the leakage current meter fitted on the ZC-B1M, while the counter records and shows the number of surge arrester operations against surges.

The post Meidensha ZC-B1M Type Surge Counters With Leakage Current Meter first appeared on Kouei Japan Trading | Get Quotation.