MODEL: MD-LC2

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

MD-LC2 SPECIFICATIONS

ES-8228 Rev.4 Page 1/3

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR

STRAIN GAUGE USE

(6-wire remote sensing)

Functions & Features

•Designed to protect strain gauge transmitters from

lightning surge damage that enters on the wiring between

the strain gauge and the transmitter

•Six-wire remote sensing

•Absorbing surges only without affecting instrumentation

signal

72

(2.83)

132

(5.20)

80

(3.15)

mm (inch)

MODEL: MD–LC2

ORDERING INFORMATION

• Code number: MD-LC2

GENERAL SPECIFICATIONS

Construction: Plug-in

Connection: M3.5 screw terminals

Housing material: Flame-resistant resin (black)

INSTALLATION

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

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

Mounting: Surface or DIN rail

Weight: 250 g (0.55 lbs)

PERFORMANCE

Maximum line voltage

Signal (L1 to L2): ±0.3 V

Excitation (+ to –): 15 V

Excitation (S+ to S–): 15 V

Signal (L1, L2) to ground: ±15 V

Excitation (+, S+) to ground: +30/-15 V

Excitation (–, S–) to ground: ±15 V

Discharge voltage (peak voltage)

Signal (L1 to L2): ±0.3 V min.

Excitation (+ to –): 15 V min.

Excitation (S+ to S–): 15 V min.

Signal (L1, L2) to ground: ±15 V min.

Excitation (+, S+) to ground: +30/-15 V min.

Excitation (–, S–) to ground: ±15 V min.

Maximum surge voltage

Signal (L1 to L2): ±20 V max.

Excitation (+ to –): 40 V max.

Excitation (S+ to S–): 40 V max.

Signal (L1, L2) to ground: ±40 V max.

Excitation (+, S+) to ground: +65/-40 V max.

Excitation (–, S–) to ground: ±40 V max.

The maximum voltage that could pass through M-RESTER.

Protected equipment must be able to withstand this voltage

for very short time period.

Response time: 4 nsec.

Leakage current

Signal (L1 to L2): ≤ 0.2 µA at ±0.3 V DC

Excitation (+ to –): ≤ 2 µA at 15 V DC

Excitation (S+ to S–): ≤ 2 µA at 15 V DC

Line to ground: ≤ 2 µA at ±15 V DC

Discharge current capacity: 5000 A (8 / 20 μsec.)

Internal series resistance and max. load current

Signal (L1, L2) each: approx. ≤ 10 Ω; max. 100 mA

Excitation (+, –) each: approx. ≤ 4 Ω; max. 200 mA

Excitation (S+, S–) each: approx. ≤ 10 Ω; max. 100 mA