EA EA-HV 900 Series, Manual

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© EA Elektro-Automatik, DE-41747 Viersen, Helmholtzstr. 31-33, Tel. 02162-3785-0, Fax. 02162-16230
6
描述
/ Description
输出端
带
HV
后缀并配有
LEMO
连接器的产品型号，随同产品一起
的连接线其屏蔽支线已接地。只有中性线才输出电流。 屏
蔽线不可用做负载线。
负载仅可与
HV
线的中性线
(Hi)
和负输出端
(Lo)
相连。如果
负载器要与本机的地相连，必须使用安全的接地器（有
PE
标志）。
过压保护
(OVP)
本系列所有产品都有过压保护功能。用电位器从前板可在最
大额定电压的
1%
到
101%
范围内设定任何数值。
激活
"OVP"
开关后预设
OVP
值显示于电压表上，且
"Preset"
LED
灯亮。
若因某个原因输出电压高过预设电压（如：操作错误，元件
不良，外部供有电压），换接式振荡器被锁定，不再供应电
量到输出端，且
"OVP"
灯亮。要想
OVP
恢复至正常值，必
须激活
“Reset”
按钮。
待机操作
(Standby)
可用
"Output"
按钮关闭输出电压。开关上的
LED
指示直流输
出状态，但是仅针对手动控制模式。
"Off" LED
灯亮=输出为
零。
"On" LED
灯亮=输出被激活。
.
注意！LED灯在远程控制模式不指示直流输出
状态！
电压和电流的调节
待机模式下用
10
圈精密电位器可预设电压和电流值。分别
激活
"Voltage"
和
“ Current ”
推动开关，对应的
“ Preset ”LED
灯亮，预设值则显示于仪表上。
"Actual"
灯指示实际值已显
示于仪表上。
Outputs
On units with HV and LEMO-connection sockets the screen
of the supplied connection cable is earthed. Only the center
wire leads the output current. The screen must not be
used as load cable.
The load must only be connected to the center wire of the
HV cable (Hi) and to the negative output (Lo). In case a
load unit should be connected to the earth of the unit use
the safety ground connector (PE-sign).
Overvoltage protection (OVP)
All units are equipped with an overvoltage protection as
standard. Any value between 1% and 101% of the max.
rated voltage can be set with the trimmer on the front panel.
The preset OVP value is indicated on the voltmeter after
activating the "OVP" switch and the "Preset" LED lights on.
If the output voltage becomes, for any reason, higher than
the preset voltage (e.g. operators fault, defective compo-
nents, external voltage), the switching oscillator is blocked,
and no further energy comes to the output. The LED "OVP"
lights on. To reset the OVP to normal, the “Reset” button
must be activated.
Standby operation
The output voltage can be switched off with the push-button
"Output" . The LEDs on the switch indicate the DC output
condition, but only during manual control. The LED "Off"
lights on = output zero. The LED "On" lights on = output
active.
Attention! The LEDs do not indicate the DC
output condition in remote control!
Voltage and current adjustment
The values of the voltage and current can be preset in standby
mode by means of 10-turn precision potentiometers. The
push switches "Voltage" respectively “ Current ” must be
activated, the corresponding LED “ Preset ” lights on and the
preset value is indicated on the meters. The LEDs "Actual"
indicate that the actual values are displayed on the meters.