MDJST [MSYSTEM]

Lightning Surge Protectors for Electronics Equipment M-RESTER;


型号：	MDJST
厂家：	M-SYSTEM
描述：	Lightning Surge Protectors for Electronics Equipment M-RESTER
文件：	总3页 (文件大小：128K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MODEL: MDJST

ON in normal operating

Lightning Surge Protectors for

Electronics Equipment M-RESTER

OFF in degradation of the voltage limiter or battery

discharged

Degradation judged: When the leakage current at the

voltage limiter exceeds approx. 50 μA. 1 V or more is

necessary for the signal (line to line) voltage.

Check button: Push button; momentary

Alarm output: Open collector

LIGHTNING SURGE PROTECTOR FOR

STANDARD SIGNAL LINE

(fast response: 3 nsec.)

Functions & Features

28 V DC @ 100 mA (resistive load)

• Designed specifically for 4 – 20 mA DC and pulse signal

line

OFF in normal conditions

ON in degradation of the voltage limiter or

battery discharged

• Battery-powered status indicator

• High discharge current capacity 20 kA (8/20 μs)

• Shield terminal provided

Saturation voltage 3.5 V DC

Battery: Lithium-metal battery (model: ER3N4); Non-

rechargeable and non-replaceable

• Compatible with IEC 61643-21 categories C1, C2, D1.

Battery life: 10 years (when used ≤ 2 minutes/month)

26(1.02)

INSTALLATION

Operating temperature: -5 to +55°C (23 to 131°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Surface or DIN rail; Standard Rack Mounting

Frame BX-16H available

(3.66)

137

(5.39)

Weight: 230 g. (0.51 lb)

mm (inch)

MODEL: MDJST–[1][2]

ORDERING INFORMATION

• Code number: MDJST-[1][2]

Specify a code from below for each of [1] and [2].

(e.g. MDJST-24Y)

[1] NOMINAL VOLTAGE

12: 12 V DC

24: 24 V DC

48: 48 V DC

[2] STATUS INDICATOR

A1: Monitor LED

A2: Monitor LED and alarm output

Y: None

GENERAL SPECIFICATIONS

Construction: Plug-in

Surge protection type: Surge energy limiting type

Connection: M3.5 screw terminals (torque 0.8 N·m)

Screw terminal: Nickel-plated steel

Housing material: Flame-resistant resin (black)

Status indicator

Monitor LED: Green, activated by Check button

MDJST SPECIFICATIONS

ES-8156 Rev.7 Page 1/3

http://www.m-system.co.jp/

MODEL: MDJST

PERFORMANCE

Insulation resistance: ≥ 100 MΩ with 250 V DC (Line to alarm output)

(The voltage more than 250 V DC turns the discharge element on; then the insulation between lines and alarm output will be

lost)

Surge protection: IEC 61643-21 Categories C1, C2, D1

NOMINAL VOLTAGE

Line to Line

MDJST-12x

MDJST-24x

±ꢀ38

±±368

MDJST-48x

±±18

±368

Max. Continuous operating voltage (Uc)

Leakage current (initial value) @Uc

8oltge protection level (Up) @4k8(±.2/56 μs)

Surge energy attenuation ratio

Line to Earth

SHLD to Earth

Line to Line

Line to Earth

SHLD to Earth

Line to Line

±±368

5μA max.

±568

±ꢀ68

±ꢁ68

Line to Earth

SHLD to Earth

Line to Line

Line to Earth

SHLD to Earth

±5668

±3668

74 dB min.

–

Response Time (line to line)

Max. discharge current (Imax)

Nominal current (I_N)

ꢀ nsec. max.

26kA (1/26 μs)

±A

Internal series resistance

AC durability

Operational attenuation

ꢀΩ max.

± Arms (36 Hz ±s) 5 times

ꢀ dB max. @DC to 4 kHz, Zo = 366Ω (1 dB max. @±66 kHz)

EXTERNAL VIEW

■ For MDJST-xA1, MDJST-xA2

■ For MDJST-xY

MONITOR

Monitor LED

CHECK

Check button

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

7.8 (.31)

CLAMP

(top & bottom)

(.59)

DIN RAIL

35mm wide

2–4.5 (.18)

HOLE

15 (.59) deep

8–M3.5

SCREW

107 (4.21)

137 (5.39)

26 (1.02)

[3.3 (.13)]

•When mounting, no extra space is needed between units.

MDJST SPECIFICATIONS

ES-8156 Rev.7 Page 2/3

http://www.m-system.co.jp/

MODEL: MDJST

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

Protected Side

Surge Side

Series

Impedance

Protected Device

Voltage Limiter

Discharge

Element

Leak Curr.

Detector

(green)

–

MONITOR

BATTERY

CHECK

Series

Impedance

–

Alarm

Output

Circuit

ALM

SHLD

Discharge

Element

Discharge

Element

Crossover Wire

: Thermal breaker

*1. Do not connect a high capacity current source such as power supply. (The current source must be equipped with current limiter of 1A or less.)

*2. For floating SHLD line, connect to the terminal (7).

*3. Sections enclosed in broken line are only applicable for “Status indicator” code “A1” or “A2.”

*4. Sections enclosed in broken line are only applicable for “Status indicator” code “A2.”

*5. The protected device’s metal enclosure must be cross-wired to the earth terminal of the MDJST.

If the protected device has no earth terminal, earth only the MDJST.

■ Alarm output connection example

–

• Specifications are subject to change with or without notice.

• This product includes a lithium-metal battery.

Consult your shipping agent such as a freight forwarder or an airline for the necessary

procedures when transporting the battery.

Observe your national and local regulations when disposing of the used battery.

MDJST SPECIFICATIONS

ES-8156 Rev.7 Page 3/3

http://www.m-system.co.jp/

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