11
NOVA™ STS Single-Tank, Triple-Single, Electronically Controlled Recloser
INSTALLATION AND OPERATION INSTRUCTIONS
MN280046EN May 2016
CAUTION
Equipment misoperation . Verify all connector pins and
both mating interface surfaces are clean and dry before
connecting cables . Voltage sensing errors can result
from contamination . Failure to comply can result in
control and recloser misoperation .
G142 .0
The electrical connectors of the recloser, control, and cable
must be clean and dry. Contaminated surfaces may be
cleaned with denatured alcohol and wet connector surfaces
may be dried with a heat gun. Dry surfaces are particularly
important for the internal voltage sensor connections. The
accuracy of the sensors can be influenced by moisture
contamination.
Connect control cables and power cables to the control;
refer to Figure 11. Verify that the proper cable/receptacle
connections are made. Improper cable connections can
result in damage to the recloser and/or control.
Complete the control programming before making the
high-voltage line connections. See the
Recloser operation
section of this manual.
The Form 6 Triple-Single control must be programmed with
a PT ratio and a phase angle adjustment; refer to Tables
9 and 10. These are entered in the System Configuration
screen; see Figure 12.
When programming the Form 6 Triple-Single control, the
PT connection must be set for a wye connection. Also, the
Phantom Phase feature must be disabled.
Refer to
Service Information S280-70-7 Form 6 Triple-
Single, Microprocessor-Based Pole Mount Recloser Control
Installation and Operation Instructions
for more information
on installing the Form 6 Triple-Single control.
Table 9 . PT Ratio
Description
Form 6-TS Control PT Ratio
NOVA STS-15
1100:1
NOVA STS-27
2200:1
NOVA STS-38
2200:1
Table 10 . Phase Angle Adjustment
Description
Form 6-TS Control Phase Shift,
3.05 m (10 ft.) 26-pin control cable
NOVA STS-15
-179.1° *
NOVA STS-27
-177.7° **
NOVA STS-38
-175.1° ***
* For each additional 3.05 m (10 ft.) of control cable, a correction of
+0.3° must be added.
** For each additional 3.05 m (10 ft.) of control cable, a correction of
+0.4° must be added.
*** For each additional 3.05 m (10 ft.) of control cable, a correction of
+0.2° must be added.
1
6
5
4
3
2
Power Connections
TB7
120/240
NEU
NEU
120 (L1)
1
4
3
2
7
12
11
10
9
8
TB8
Voltage Sensing Connections
Source
Load
V (1-2) V(3-4) V(5-6)
V1
V2
V3
5
6
BØ
120
(L2)
CØ
AØ
To voltage sensors
otee:
N
Terminal block positions TB7-3 and TB7-4
are factory-jumpered together.
Terminal block positions TB7-5 and TB7-6
are factory-jumpered together.
Figure 11 . Default factory wiring for internal voltage sensor option .
