2.20
SEL-2414 Transformer Monitor Instruction Manual Date Code 20130214
Installation
Rear-Panel Connections
If the start-up current and full-load current are within the thermal specifications
of the SEL-2414, connect loads directly to the device. Figure 2.16 shows an
application where the SEL-2414 monitors three fan motors. Because the
SEL-2414 is not a protection device, be sure to protect the fan motors by means
of fuses (F1 through F4) or miniature circuit breakers (not shown). Select appro-
priate fuses with the following device specifications in mind (see Section 1:
Introduction and Specifications for more information):
➤ 1 Second Thermal: 500 A (100 A for a 1 A device)
➤ Rated Continuous: 15 A (3 A for a 1 A device)
Voltage Connections
Connect voltages from any one of the following three sources to the SEL-2414
(see Figure 2.17 through Figure 2.19):
➤ Direct connection
➤ Wye-wye connected VT
➤ Open-delta connected VT
Select appropriate fuse ratings according to the VT VA rating. For the direct con-
nection (Figure 2.17), SEL recommends a fuse rating of 100 mA (see Section 1:
Introduction and Specifications for the voltage information of the device).
Figure 2.15 Current Connections Through CTs
Figure 2.16 Direct Current Connections
A
B
C
E10
SEL-2414 (Partial)
E09 E08 E07
Three-Phase
Power Transformer
* Single-Phase AC Fan Motor
Neutral
A-Phase
M* M* M*
E07 E08 E09
E10
SEL-2414
(Partial)
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