Samwha DSP DSP-VIP-PL - Page 17

Under Voltage
*110V:70~110
*220V:150~220
*380V:310~380
*440V:370~440
*480V:410~480
*The 3 phase voltage under lower level of
each range is not sensed,but assumed
zero.
*The trip caused by a voltage is reset
automatically after recovering to level of
preset value
*If line voltage is under preset value in
initial starting state,motor can not start.
Over Load(KW)
Trip is done if the load(KW)
greater than preset value is
kept over preset o-time
Over Current
Trip is done if the load
current greater than preset
value is kept over preset
o-time
Under Load(KW)
Trip is done if the load(KW)
smaller than preset value is
kept over preset u-time
Under Current
Trip is done if the load
current greater than preset
value is kept over preset o-
time
Current
Unbalance
*Trip is done if the preset
current unbalance rate is
kept over 8 sec.
*rate=[(max curr.-min
curr.)/max curr.]*100[%]
Voltage
Unbalance
*Trip is done if the preset
voltage unbalance rate is
kept over preset time.
*rate=[(max voltage-min
voltage)/max voltage] * 100
[%]
Preset time:0.5~10sec/adjustable
Locked Rotor
Trip is done if 300% current
greater than preset “oc” is
kept for d-time plus 0.1 sec.
Shock/Stall
(instant over
current/shock)
*Trip is done if a current
greater than preset value
during working is happened
for preset time.
*Preset range:180%~700%
to “OC”
*upper limit for 70 type is based on
[(200/OC setting value)*100(%)]
Short
*If load current is greater
than preset value,output
relay is trip within 0.05 sec
*Preset range:800%~2000%
to "OC"
*Trip time : within 0.05sec
*Available “OC” preset range in 70 type
is 0.2A~10A for shot protection
*Available ”OC” range in the usage of
external CT is 0.2A~6A
*AUX(07-08) output is available to
Operate MCCB with enough current
capacity as SS-tr is selected in “Auo”
mode