Secondary Unit Substations
Datasheet constraints: every range, checkbox and listbox field now states its direction
Showing changes from Rev 3
to Rev 4
in Secondary Unit Substations.
---
title: Secondary Unit Substations
…100 unchanged lines
- "Section submittals required by each governing standard"
- "Nameplate schedule"
+constraint: all_of
```
…23 unchanged lines
- "Manufacturer qualification statement"
- "Field testing firm qualification and test procedure"
+constraint: all_of
```
…33 unchanged lines
- "Warranty certificate"
- "Spare parts receipt"
+constraint: all_of
```
…23 unchanged lines
```datasheet
−label: Minimum Manufacturer Production Experience
+label: Manufacturer Production Experience
type: range
unit: years
…3 unchanged lines
setpoints: [0, 3, 5, 10, 20]
default: 5
+constraint: min
```
…56 unchanged lines
setpoints: [30, 40, 45, 50]
default: 40
+constraint: min
```
…128 unchanged lines
setpoints: [2.4, 4.16, 4.8, 6.9, 7.2, 12, 12.47, 13.2, 13.8, 14.4, 20.8, 22.9, 23, 24.9, 34.5]
default: deferred
+constraint: exact
```
…56 unchanged lines
setpoints: [112.5, 150, 225, 300, 500, 750, 1000, 1500, 2000, 2500, 3000, 3750, 5000, 7500, 10000]
default: deferred
+constraint: exact
```
…22 unchanged lines
max: 10
setpoints: [2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 5.75, 6, 6.5, 7, 7.5, 8, 8.5, 9, 10]
+constraint: exact
```
…18 unchanged lines
setpoints: [4.76, 8.25, 15, 15.5, 27, 38]
default: derived
+constraint: min
```
…10 unchanged lines
setpoints: [12.5, 16, 20, 25, 31.5, 40, 50, 63]
default: derived
+constraint: min
```
…18 unchanged lines
setpoints: [600, 800, 1000, 1200, 1600, 2000, 2500, 3000, 3200, 4000, 5000, 6000]
default: derived
+constraint: min
```
…12 unchanged lines
setpoints: [22, 25, 30, 35, 42, 50, 65, 85, 100, 150, 200]
default: derived
+constraint: min
```
…162 unchanged lines
- "Capacitive voltage indicators on the primary bus"
- "Infrared inspection windows at the cable terminations"
+constraint: all_of
```
…73 unchanged lines
- "Winding temperature alarm to the annunciator or the monitoring interface"
- "Forced-air fan start from winding temperature"
+constraint: all_of
```
…334 unchanged lines
- "Verification of every protective device setting and fuse rating against the coordination study"
- "Verification of the transformer tap position against the one-line diagram"
+constraint: all_of
```
…62 unchanged lines
setpoints: [0, 3, 4, 6]
default: 4
+constraint: exact
```
…78 unchanged lines
setpoints: [1, 2, 3, 5]
default: 1
+constraint: min
```
…49 unchanged lines
- "One set of control fuses of each type and rating installed"
- "One set of indicating lamps and lenses of each type installed"
+constraint: all_of
```
## A blown primary fuse is otherwise an outage that lasts until a replacement is sourced, and a fuse of a different rating installed to end the outage defeats the coordination study and the current-limiting protection the secondary section may depend on, so a fused primary without spare fuses on the site is a substation waiting for a substitution. {note}
## Spare parts shall be of the same manufacturer and rating as the installed items, shall be delivered in their original packaging, and shall be labeled with the designation of the section and device they serve.