Huawei STS-3000K-H1 Installation Manual page 41

Smart transformer station

Table of Contents

STS-(3000K, 6000K)-H1 Smart Transformer Station

(Spain, Eiffage Turroneros)

Installation Guide

Switch operation process: After turning on the grounding switch of the outgoing cable cabinet

at the booster station, take out the key to the grounding switch of cabinet G1. After the key is

returned, you can turn off the grounding switch of the outgoing cable cabinet.

Procedure

Step 1 Mechanical lock K1 is configured at the operation hole of the grounding switch in cabinet G1.

After the K1 key is inserted, you can turn on or off the grounding switch. You can remove the

K1 key only after the grounding switch is turned off.

Step 2 Mechanical lock (not a padlock) K2 is configured at the operation hole of the grounding

switch in cabinet G3. After the K2 key is inserted, you can turn on or off the grounding switch.

You can remove the K2 key only after the grounding switch is turned on.

Step 3 Based on the hand-in-hand connection diagram of the STSs obtained from the customer, put

the K2 key of cabinet G3 in STS 1 and the K1 key of cabinet G1 in STS 2 on the same key

ring. Mark the STS and switch numbers on the labels. The operations for STS 2 and STS 3 are

similar. Turn on the grounding switch of cabinet G3 in the last STS. Remove the K2 key and

hand it over to the O&M personnel.

Step 4 For the first STS closest to the booster station, the key to the grounding switch of cabinet G1

needs to be interlocked with the outgoing cable knife switch of the booster station. The

interlocking logic is the same as that of STSs. If the knife switch does not have the

interlocking function, interlocking can be performed with the disconnector. The operation

hole of the disconnector should be equipped with a mechanical lock (not a padlock). After the

key is inserted, the disconnector can be turned on and off. The key can be removed only after

the disconnector is turned off.

Step 5 If the disconnector and the grounding switch do not have the interlocking function, turn off

the grounding switch of cabinet G1 and remove the key. Then hand the key over to the O&M

personnel for proper storage. According to the requirements, interlock the grounding switch

of the booster station with that of the first STS to ensure operation safety.

Figure 5-5 Interlocking between STSs with a CVC ring main unit

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Issue 02 (2020-02-21)

5 Operating Components

Table of Contents

Sts-6000k-h1