热继电器是一种利用电流的热效应工作的保护电器。热继电器由发热元件(电阻丝)、双金属片、传导部分和常闭触点组成,当电动机过载时,通过热继电器中发热元件的电流增加,使双金属片受热弯曲,带动常闭触点动作。热继电器常用于电动机的长期过载保护。当电动机长期过载时,热继电器的常闭触点动作,断开相应的回路,使电动机得到保护。由于双金属片的热惯性,即不能迅速对短路电流进行反应,而这个热惯性也是合乎要求的,因为在电动机起动或短时间过载时,热继电器不会动作,避免了电动机的不必要停车。
过载保护。逆变器输出电流超过额定值,且持续通达规定的时间以上,为了防止逆变器期间、线路等损坏要停止运转。恰当的保护需要反时限特性,采用热继电器或者电子热保护(使用电子电路)。过负载是由于负载的GD(惯性)过大或因负载过大使电机堵转而产生的。
瞬时过电流保护。由于逆变器负载侧短路等,流过逆变器器件的电流达到异常值(超过容许值)时,瞬时停止逆变器运转,切断电流。变流器的输出电流达到异常值,也同样停止逆变器运转。
瞬时停电保护。对于数毫秒以内的瞬时停电,控制电路工作正常。但瞬时停电时间在10s以上时,通常会使控制电路误动作,主电路也不能供电,所以检出后使逆变器停止工作。
接地过电流保护。逆变器负载侧接地设计,为了保护逆变器,有时要有接地过电流保护功能。但为了确保人身安全,需要装设漏电断路器。冷却风机异常。有冷却风机的装置,当风机异常时装置内的温度将上升。因此采用风机热继电器或器件散热片传感器,检出异常后停止逆变器。
瞬时过电流保护。由于逆变器负载侧短路等,流过逆变器器件的电流达到异常值(超过容许值)时,瞬时停止逆变器运转,切断电流。变流器的输出电流达到异常值,也同样停止逆变器运转。
Item Id Item Description
72R155-V10-S222TX ROCK-R VACUUM PUMP
72R547-V116-D303X VACUUM PUMP
72R547-V116P-D306X VACUUM PUMP
72R555-V116B-D304X VACUUM PUMP
72R634-P112-D402X COMPRESSOR
72R634-P181-D401X GAST COMPRESSOR
72R634-P181-D402CX COMPRESSOR
72R645-P112-D303X COMPRESSOR
72R645-P112-D401X COMPRESSOR
72R645-P181-D500X COMPRESSOR
72R645-P181-D501X COMPRESSOR
72R645-P181-D502X COMPRESSOR
72R645-V114-D303X VACUUM PUMP
72R645-V160-D303X VACUUM PUMP
72R650-P112-D500X COMPRESSOR
72R655-P112-D304X COMPRESSOR
72R655-P188-D501X ROCKING PISTON
72R655-V114-D303X VACUUM PUMP
72R655-V114-D304X VACUUM PUMP
72R655-V154A-D402CX VACUUM PUMP
72R655-V160-D304X VACUUM PUMP
74R130-P101-H200X COMPRESSOR
74R130-P101-H201X COMPRESSOR
74R130-P101-H203X COMPRESSOR
74R130-P114-H200X COMPRESSOR
74R130-P114-H201X COMPRESSOR
74R130-P114B-H201X COMPRESSOR
74R130-P114C-H201X COMPRESSOR OEM
74R130-P115-H200X COMPRESSOR
74R130-P117-H200X COMPRESSOR
74R135-P101-H200X COMPRESSOR
74R647-V101A-H601X VACUUM PUMP
75R135-V101A-H200X VACUUM PUMP
75R135-V102-H200X VACUUM PUMP
75R135-V103-H200X VACUUM PUMP
75R135-V103-H203X VACUUM PUMP
75R537-V254-H301X VACCUM PUMP
75R537-V254-H306X VACUUM PUMP
75R635-P101-H301X COMPRESSOR
75R635-P110-H301X COMPRESSOR
75R635-P127-H301X COMPRESSOR
75R637-P117A-H302X COMPRESSOR
75R640-P101-H301X COMPRESSOR
75R640-V106-H301X VACUUM PUMP
75R645-P101-H301X COMPRESSOR
75R645-P101-H302CX COMPRESSOR
75R645-P110A-H301X COMPRESSOR
75R647-P101-H301X COMPRESSOR
75R647-P101-H302CX COMPRESSOR
75R647-V101-H301X VACUUM PUMP
75R647-V101A-H301X VACUUM PUMP
75R732-110-H304X VACUUM/COMPRESSOR
7HDD-10-M750X COMPRESSOR
7HDD-10-M853 COMPRESSOR
7HDD-11T-M750X COMP TANK/30 GAL
7HDD-11TA-M750X COMP TANK/30 GAL *
7HDD-11TC-M853 COMP TANK/30 GAL
7HDD-11TD-M853 COMP TANK/30 GAL
7HDD-69DTA-M750X COMP TANK/60 GAL
7HDD-69DTD-M853 COMP TANK/60 GAL
7HDE-10-M850X COMPRESSOR
7HDE-10-M853 COMPRESSOR
7HDE-10-M855X COMPRESSOR
7LDE-10-M750X COMPRESSOR
7LDE-10-M853 COMPRESSOR
7LDE-11T-M750X COMP TANK/30 GAL
7LDE-16-M750X COMPRESSOR
7LDE-16-M853 COMPRESSOR
7LDE-46S-M750X COMPRESSOR
7LDE-46T-M750X COMP/TANK
81R640-P101-H302CX ROCKING PISTON
81R640-P101-H311CX ROCKING PISTON
82R642-P112-H302CX ROCKING PISTON
82R642-P181-H302CX ROCKING PISTON
82R645-P107-H304X COMPRESSOR
82R645-PXXX-H304CX COMPRESSOR
85R637-P201-N311X ROCKING PISTON COMPRESSOR W/O CAPACITOR
85R637-XXX-XXXX COMPRESSOR
8AM-32A-FB20 AIR MOTOR 20:1 GEAR RATIO
8AM-32A-FC20 AIR MOTOR 20:1 GEAR RATIO
8AM-32A-FD20 AIR MOTOR 20:1 GEAR RATIO
8AM-32A-FF20 AIR MOTOR 20:1 GEAR RATIO
8AM-ARV-70 AIR MOTOR
8AM-ARV-71 AIR MOTOR
8AM-FRV-2A AIR MOTOR
8AM-FRV-2B AIR MOTOR
8AM-FRV-30A AIR MOTOR
8AM-FRV-40 AIR MOTOR
8AM-FRV-61 AIR MOTOR
8AM-NRV-28A AIR MOTOR
8AM-NRV-32A AIR MOTOR
8AM-NRV-42A AIR MOTOR
8AM-NRV-5B AIR MOTOR
8AM-NRV-79 AIR MOTOR
8AM-RV-50 AIR MOTOR
8HDM-10-M850X COMPRESSOR
8HDM-10-M853 COMPRESSOR
8HDM-11TC-M853 COMP TANK/30 GAL
8HDM-11TD-M853 COMP TANK/30 GAL
8HDM-30DTC-M853 COMP TANK/60GAL