| Type of Load |
Three phase
medium voltage AC induction motors or synchronous motors |
| AC Supply Voltage |
1000, 2300,
3300, 4160, 6600/6900 VAC 11 - 14 KV
+10% to - 15% 50/60 Hz line voltages |
| HP Ratings |
Up to 7500HP
@ 6900V (600 Amps max)
Up to 7500HP@ 11/14 KV (300 Amps max)
Contact factory for higher rating requirements |
| Overload Ratings |
500% - 60
Seconds |
| Power Circuit |
Series strings
of SCR power modules
(1, 2, or 3, matched pairs of SCRs per phase depending on voltage rating) |
| SCR Peak Inverse
Voltage |
Line Voltage
1000
2300
3300/4160
6600/6900
11000/14000
|
PIV Rating
3500
6500
13000
19500
39000
|
| Transient Voltage
Protection |
dv/dt circuits
(1 per SCR Power Module) |
| Vacuum Bypass Contactor |
Standard
on all models, line start rated |
Ambient Operating
Temperature |
0 - 50¼ C
(32¼ F to 122¼ F)
(Optional -20¼ to 50¼ C with heaters) |
| Control |
Digital microprocessor
controller with read-out in English text
Programmable in four languages
(English, French, Spanish and German)
Non-volatile memory for programming and faults
Control board with built-in timers
At Speed, Start and Fault FORM C contacts |
| Communications |
RS485 with
modbus RTU protocol or
RS485 with windows interface |
| Adjustments |
Motor FLA |
Dual Adjustments
-
Two independent settings for: |
Initial
Voltage
Current Limit
Acceleration Time
Deceleration Time |
10 - 95%
of nominal voltage
100 - 500% of motor FLA
2 - 90 seconds
2 - 90 seconds |
Decel -
Final Torque
Pump Control
Pulse Start |
0 - 10 sensitivity
(Min - Max)
Four closed loop start and stop curves
0.1 - 2.0 seconds @ 80% line voltage not adjustable |
Under Voltage
Trip
Over Voltage Trip
Under Current Trip
Allowable Restarts |
70 - 90%
(adjustable trip delay)
110 - 125% (adjustable trip delay)
20 - 90% of motor FLA (adjustable trip delay)
0 - 10 (adjustable time inhibit) |
| Motor and Starter
Protection |
Electronic
Overload
Electronic Shear Pin
Phase Loss
Phase Sequence
Over Voltage
Under Voltage
Stall Protection
Shorted SCR
Connection Error
Starter Over-temp |
Inverse time,
75 - 150% of motor FLA
Trips within 1 cycle of setpoint
One or more phases missing
Phase sequence incorrect
Trips at high line setpoint
Trips at low line setpoint
Starting process is not complete
Internal fault detected
Internal fault/ motor connection
Heatsink over temperature |
|
|
| Line Start Section |
Load break/
fault make disconnect switch with automatic
grounding arm and viewing window
Fuses with blown fuse indicator
In-line vacuum contactor
Control power transformer with fused primary/secondary
Packaged in common enclosure with soft start
Optional "Soft Start" (requires customer supplied mechanically
interlocked line start panel) |
|
| Statistical Data |
• Total
amount of run time since soft start was reset
• Amount of time it took motor to start during last period
• Maximum current during last start period
• Total number of starts since soft start was reset
• The cause of the last fault
• Percentage of current at last trip
• Total number of trips since soft start was reset |
|
| Enclosure |
NEMA 12,
top and bottom entrance plates; 11 gauge steel
ASA #61 gray paint with lifting eyes; 11-14 KV units are NEMA 1 |
| Approvals |
UL |
PRODUCTS
