Specifications; Power Rating; Current And Fuse Rating; Notes - Eaton Cutler-Hammer TRU-START Operation And Installation Manual

2 SPECIFICATIONS

2.1 POWER RATING

POWER
CONTROL
RATING
CONTACTS
PROTECTION

2.2 CURRENT AND FUSE RATING

DCI AMPS
MODEL
TRU-020-DCI
TRU-040-DCI
TRU-080-DCI
TRU-125-DCI
TRU-200-DCI
TRU-300-DCI
TRU-500-DCI

2.2.1 NOTES

2.2.1.1 The HP listing is for reference only. For proper selection use the current rating.
2.2.1.2 The fuses recommended are Class J time-delay type. This fuse is being
suggested even though it may not protect the SCR in an output shorted
condition while braking. It will protect the unit when starting to operate into a
shorted output. In the case of a shorted SCR, the fuse is there to clear the fault
only.
2.2.1.3 The RMS AC line current is equal to :
Assuming 10A motor, TRU-START DC Injection set at 300% current (30 A DC),
free wheeling for 70% of the cycle, then the AC current is 16A.
2.2.1.4 All TRU-START DC Injection models are built without cooling fans because they
are short duty rated.
200-600VAC, 50/60 Hz
115 VAC@50 Hz or 120 VAC@60 Hz, 10VA
Intermitent duty, See Section 2.2
300% for 30 seconds, once every 30 minutes
All models have 1600V PIV SCR's
DC injection relay contacts rated at 1A, 120VAC
Short circuit by HRC fuses or circuit breaker
(supplied upon request)
Voltage surge protection by snubber's and MOV's across the SCR's
CURRENT RATING
MOTOR
HP @ 575 V
20 20
40 40
75 75
125 125
200 200
300 300
500 500
PAGE 5
MOTOR FUSE
HP @ 460V AMPS
15 20
30 40
60 80
100 125
150 200
250 300
400 500
AC RMS = DC Amps x √ Duty Cycle
SCR
TYPE
Module
Module
Module
Module
Disc
Disc
Disc