Project Description

The Vanguard MCCB-500-2 is a microprocessor-based high current circuit breaker test set. This unit provides a variable high current source, control, metering, and timing circuitries for testing overload relays and thermal and magnetic circuit breakers. The MCCB-500-2 high output current source can also be used in other primary current injection applications.

The MCCB-500-2’s current source has 3 outputs: 500A @ 4 Vac, 125A @ 14Vac, and 25A @ 70Vac.? The current sources can output short-duration overload conditions. This feature is convenient for performing instantaneous trip tests of molded case circuit breakers, or testing the time delay characteristics of magnetic overload relays.
Test current is measured and displayed on a 128 x 64 pixel back-lit LCD screen that is clearly visible in direct sun light or low light levels. Control switches are used to turn the current source on and off, select the timer stop input type (current mode, dry contact, or wet contact), and control the LCD contrast.
A “momentary” mode can turn on the current source, capturing the current reading and displaying the value on the LCD. This feature can be used to set the test current and minimizes the possibility of overheating the device under test.
Test current is turned on at the zero crossing point using a solid state device for reliability and precision timing.

9127-UC [110V MCCB-500-2]

9128-UC [220V MCCB-500-2]

9127-SCA [MCCB-500-2 current module shipping case]

9127-SCB [MCCB-500-2 control module shipping case]

Vanguard MCCB-500-2是基于微处理器的大电流断路器测试仪。该单元提供可变的大电流源,控制,计量和定时电路,用于测试过载继电器以及热和磁断路器。MCCB-500-2高输出电流源也可以用于其他一次电流注入应用中。

MCCB-500-2的电流源具有3个输出:500A @ 4 Vac,125A @ 14Vac和25A @ 70Vac。电流源可以输出短时过载条件。此功能便于执行塑壳断路器的瞬时跳闸测试,或测试磁性过载继电器的延时特性。
测试电流被测量并显示在128 x 64像素的背光LCD屏幕上,该屏幕在阳光直射或弱光下清晰可见。控制开关用于打开和关闭电流源,选择计时器停止输入类型(电流模式,干接点或湿接点),并控制LCD对比度。
“瞬时”模式可以打开电流源,捕获当前读数并在LCD上显示值。此功能可用于设置测试电流,并将被测设备过热的可能性降到至低。
使用固态设备在零交叉点接通测试电流,以实现可靠性和精确定时。

9127-UC [110V MCCB-500-2]

9128-UC [220V MCCB-500-2]

9127-SCA [MCCB-500-2当前模块装运箱]

9127-SCB [MCCB-500-2控制模块装运箱]

MCCB-500-2

塑壳断路器测试仪(常态输出电流可达500A,瞬时电流可输出2500A)

产品功能和性能:

能够对塑壳断路器进行完整的性能测试,包括:

1)输出电流源用来测量塑壳断路器的瞬时跳闸性能;

2)内置计时器用来测量塑壳断路器的延时特性;

3)另外,内置计时器功能也可以用来测量保护继电器的延时特性;

4)它的输入电流源接口,也可以当作电流表使用,用来测量外部电流源的大小;

5)有时,也可当作大电流发生器使用。

产品卖点:

1)测试对象主要是塑壳断路器、电动机保护继电器;

2)输出电流源有3档可供选择:25 A @ 70 Vac, 125 A @ 14 Vac, 500 A @ 4 Vac;

3)可输出的瞬时电流可达2500A,有时也可当作大电流发生器使用;

4)内置计时器可用来测试动作时间;

5)为了方便运输,MCCB 500-2 由原来的MCCB-500 改进为2部分:14.5 kg 控制单元和30.4 kg 电流源;

6)外部电流输入可用于测量CT变比;

7)测试结果上可以同时看到外部和内部CT电流。

MCCB-500-2

Technical Specifications

PHYSICAL SPECIFICATIONSControl Module
Dimensions:?12″W x 16.25″H x 10″D (30.5 cm x 41.3 cm x 25.4 cm)
Weight:?32 lbs. (14.5 Kg)Current Supply Module
Dimensions:?12″W x 10″H x 17.25″D (30.5 cm x 25.4 cm x 43.8 cm)
Weight:?67 lbs. (30.4 Kg)
INTERNAL CURRENT METER1A – 3,000A; accuracy: 1% of reading, ±2 digits
INPUT VOLTAGE
100 – 120 Vac or 200 – 240 Vac (factory-pre-set), 50/60 Hz
TIMER STOP INPUTSVoltage input (20V – 300V, dc or peak ac), dry contact input, or removal of test current
MEASUREMENT METHODIsolated CT
DISPLAY
Back-lit LCD screen (128 x 64 pixels); viewable in bright sunlight and low light levels
TIMER READING RANGE0.1ms – 2 hours (also displayed in cycles); accuracy: 0.1% of reading, ±0.1ms
OUTPUT CURRENTS500A @ 4V, 125A? @ 14V, 25A @ 70V
INSTANTANEOUS CURRENT2,500A
HUMIDITY90% RH @ 40°C (104°F) non-condensing
TEMPERATURE
Operating:?-10°C to +50°C (+15°F to +122°F)
Storage:?-30°C to +70°C (-22°F to +158°F)
CABLESTwo 5-foot (1.5m) #2/0 current cables, two 8-foot (2.5m) external timer input cables with alligator clips, one ground cable, one power cord
FURNISHED ACCESSORIESShipping case
SAFETYDesigned to meet IEC61010 (1995), UL61010A-1, CSA-C22.2 standards
ALTITUDE
2,000 m (6,562 ft) to full safety specifications
WARRANTYOne year on parts and labor

MCCB-500-2

技术指标

物理规格控制模块
尺寸:?12“ W x 16.25” H x 10“ D(30.5 cm x 41.3 cm x 25.4 cm)
重量:?32磅(14.5 Kg)电源模块
尺寸:?12” W x 10“ H x 17.25” D (30.5厘米x 25.4厘米x 43.8厘米)
重量:?67磅?(30.4公斤)
内部电流表1A – 3,000A;精度:读数的1%,±2位
输入电压
100 – 120 Vac或200 – 240 Vac(出厂预设),50/60 Hz
定时器停止输入电压输入(20V – 300V,直流或峰值交流),干触点输入或去除测试电流
测量方法隔离CT
显示
背光LCD屏幕(128 x 64像素);?在明亮的阳光和弱光下可见
定时器读数范围0.1ms – 2小时(也以周期显示);精度:读数的0.1%,±0.1ms
输出电流500A @ 4V,125A @ 14V,25A @ 70V
瞬时电流2,500A
湿度90%RH @ 40°C(104°F)不凝结
温度
工作:?-10°C至+ 50°C(+ 15°F至+ 122°F)
储存:?-30°C至+ 70°C(-22°F至+ 158°F)
电缆两根5英尺(1.5m)#2/0电流电缆,两根8英尺(2.5m)带有鳄鱼夹的外部计时器输入电缆,一根地线,一根电源线
配置配件运输箱
安全设计符合IEC61010(1995),UL61010A-1,CSA-C22.2标准
海拔高度
2,000 m(6,562 ft)至完整的安全规格
质保一年